Calibration Specification of Tunable Laser Source for Telecommunications
Some standard content:
JJF1198--2008
Calibration Specification of Tunable LasetSource for TelecommunicationsJJF1198—2008
This specification was approved by the General Administration of Quality Supervision, Inspection and Quarantine on March 25, 2008, and came into effect on June 25, 2008.
Responsible unit: National Optical Metrology Technical Committee Main drafting unit: Communication Metrology Center of Ministry of Information Industry This specification is entrusted to the National Optical Metrology Technical Committee to be responsible for interpreting this specification Main drafters:
JJF1198—2008
Zhang Yingyan (Communication Metrology Center of Ministry of Information Industry) Yue Lei (Communication Metrology Center of Ministry of Information Industry) Fu Dongbo (Communication Metrology Center of Ministry of Information Industry) Participating drafters:
Qiu Gang (Communication Metrology Center of Ministry of Information Industry) Bo (Communication Metrology Center of Ministry of Information Industry) Zhou
References··
Overview.,
Metrological characteristics·
Calibration conditions||tt ||5.1 Environmental conditions
5.2 Calibration equipment:
6 Calibration items and calibration methods
Calibration items·
Calibration methods
7 Calibration results·
Optical wavelength indication error
Optical wavelength setting repeatability
Optical wavelength stability·
Side mode suppression ratio
7.5 Optical power stability
8 Uncertainty assessment of calibration results
9 Recalibration time interval·
Appendix A Format of original calibration records
Appendix B
Appendix ℃
Format of content of calibration certificate
1198—2008
Example of uncertainty assessment of calibration of tunable laser source for communication (1)
(2)
(2)
(5)
(5)
1 Scope
JJF1198-2008
Calibration specification for tunable laser source for communication
This specification specifies the general metrological characteristics, calibration methods and requirements for instruments and equipment used for calibration of tunable laser sources for communication (hereinafter referred to as tunable sources). It is applicable to the initial calibration, subsequent calibration and in-use inspection of tunable sources. The calibration of other similar tunable sources can be implemented with reference to this specification. The requirements for metrological characteristics in the type evaluation of tunable sources can be implemented with reference to this specification.
2 References
JJF1001-1998 "General metrological terms and terms" JJF1071-2000 "Rules for the preparation of national metrological calibration specifications" JJF1059-1999 "Evaluation and expression of measurement uncertainty" JJG (YD) 055---2002 "Verification procedures for tunable laser light sources" When using this specification, attention should be paid to using the current valid versions of the above references. 3 Overview
The tunable source is one of the important equipment used to measure optical passive components, and is also an indispensable equipment in the research and development, production of optical transmission equipment and testing of dense wavelength division multiplexing communication systems. The tunable source can output light of different wavelengths within a certain range to meet the requirements of the International Telecommunication Union (ITU) standards. From the perspective of implementation technology, it is mainly divided into current control technology, temperature control technology and mechanical control technology. The tunable source for communication mainly adopts mechanically controlled external cavity adjustment technology.
4 Metering characteristics
a) Optical wavelength adjustment range: (1260l640)nm; b) Optical wavelength indication error: -0.1nm;
c) Optical wavelength setting resolution: 0.0lnm, d) Optical wavelength setting repeatability: 0.035nm e) Optical wavelength stability: better than or equal to +0.olnm/h; f) Side mode suppression ratio: 240dB;
g) Line width: >100kHz (related switch closed), effective line width ≥50MHz (related switch open); h) Output optical power: (-20~+14)dBm; i) Power stability: better than or equal to ±0.05dB/h. When the instrument manual index is higher than this requirement, the instrument manual index shall be the performance requirement; it is recommended to use FC type optical fiber connectors that meet national standards. The above technical indicators are not used for qualification judgment and are for reference only.
5 Calibration conditions
5.1 Environmental conditions
5.1.1 Ambient temperature: (23+5)C;
JJF 1198-—2008
5.1.2 Temperature change during calibration: ±2℃; 5.1.3 Relative humidity: ≤80%;
5,1.4 Power supply voltage: (220±11)V; frequency: (50±1)Hz; 5.1.5 The laboratory should be free from severe vibration and electromagnetic interference that may affect the measurement results. 5.2 Calibration equipment
5.2.1 Optical wavelength meter
a) Optical wavelength measurement range: (8001700)nm; b) Relative uncertainty of wavelength measurement: 7×107 (k=2); c) Wavelength measurement resolution: 0.1pm.
5.2.2 Spectrum Analyzer
a) Optical wavelength measurement range: (800~1700)nm; b) Optical power measurement range: (-50~~+15)dBm; c) Optical power measurement uncertainty: 0.5dB (=2); d) Dynamic range: better than 60dB at ±1nm; e) Optical power measurement linearity: better than 0.5dB. 5.2.3 Optical power meter
a) Working wavelength: (800~1700)nm; b) Measurement range: (-70~+13)dBm; c) Measurement uncertainty: 5% (k=2); d) Resolution: 0.001dB;
e Input method: Optical fiber input.
5.2.4 Optical signal analyzer
a) Wavelength range: (1250~1640) nm; b) Line width measurement range: 100kHz~~20GHzc) Line width measurement uncertainty: ≤15% (k=2)5.2.5 Mach-Zehnder interferometer
a) Time delay: >3.5 5;
b) Insertion loss: 8dB:
c) Wavelength range: (1250～1640) nm; d) Output and input method: fiber output method. 5.2.6 Optical isolator
a) Operating wavelength: 1310nm or 1550nm window; b) Insertion loss: <5 dB;
c) Isolation: →35 dB.
JJF1198—2008
5.2.7 Fiber optic connector: It is recommended to use FC/PC fiber optic connector that meets national standards and the length should not be less than 2m. 5.2.8 Working platform: Stable and vibration-resistant. The main equipment should be used within the validity period of verification and calibration. 5.2.9
Calibration items and calibration methods
Calibration items
Table 1 Calibration items
Calibration items
Appearance and normal working inspection
Optical wavelength adjustment range
Optical wavelength indication error
Optical wavelength setting resolution
Optical wavelength repeatability
Optical wavelength stability
Side mode suppression ratio
Optical output power
Optical power stability
·Note: "十" are required calibration items, "," are optional calibration items. 6.2 Calibration method
Appearance and normal working inspection
First calibration
Subsequent calibration
a) The tunable source to be calibrated should be accompanied by necessary accessories, instructions and previous calibration certificate. b) All parts of the tunable source to be calibrated should be firmly installed to ensure normal working c) The display function of the tunable source to be calibrated should be normal after power-on. Calibration in use
6.2.2 All calibration equipment and the tunable source to be calibrated should be placed on a stable working platform and preheated as required by the instructions. The position of each section of connecting optical fiber (or optical cable) should remain fixed during the test. Adjust the output power of the tunable source to meet the appropriate received optical power measured by the optical wavelength meter or spectrum analyzer. 6.2.3 Calibration of optical wavelength adjustment range
a) Connect the equipment according to Figure 1.
Laser source
Figure! Optical wavelength test connection diagram
Optical wavelength meter
b) Set the wavelength value of the tunable source output light to the maximum and minimum values, measure: and record. 6.2.4 Calibration of optical wavelength indication error
JJF1198—2008
a) Connect the equipment according to Figure 1 and set the wavelength resolution of the tunable source to the highest. b) Set the light output by the tunable source to be long, and input the light output by the tunable source into the optical wavelength meter. c) Let the optical wavelength meter perform 10 average measurement procedures and record the wavelength after 10 average measurements by the wavelength meter. d) For other wavelength points to be tested, follow the calibration steps of 6.2.4b) and 6.2.4c). e) Within the adjustment range of the tunable source, calibrate at least one point every 10 nm. 6.2.5 Calibration of optical wavelength setting resolution
a) Connect the equipment according to Figure 1.
b) Set the tunable source display to the maximum resolution and set the wavelength of the tunable source to a certain value and record it.
c) Adjust the wavelength value change of the tunable source to the minimum resolution of the light source. d) Read the wavelength value measured by the optical wavelength meter and record it. 6.2.6 Repeatability of optical wavelength setting
a) Connect the equipment according to Figure 1.
b) According to the instructions of the tunable source to be calibrated, set the maximum wavelength point in: and the minimum wavelength point in 2 within a certain wavelength range. At the same time, set the resolution of the tunable laser light source to the highest. .c) Use the recording setting times (i=1, 2,, m; m≥2). After each setting, complete the measurement of and on the optical wavelength meter and record them.
d) According to the instructions of the tunable source to be calibrated, select wavelength points in a small range and repeat steps 6.2.6b) and 6.2.6c).
6.2.7 Optical wavelength stability calibration
The characteristic of the change of a certain wavelength value output by the light source over time t is called the output wavelength time stability R of the light source. a) Connect the equipment according to Figure 1.
b) Select the wavelength point and output power according to the instructions of the tunable source to be calibrated. c) Record the optical wavelength value at equal time intervals within a certain time (usually 1h). The total measurement time shall not be less than the requirements of the instructions of the tunable laser source to be calibrated. Measure n optical wavelength values^ (i=1, 2,, n; n2≥10) and record them.
6.2.8 Near mode suppression ratio calibration
a) Connect the equipment according to Figure 2.
Tunable laser source
Figure 2 Connection diagram for side mode suppression ratio test
Spectrum analyzer
b) Properly adjust the display wavelength range and amplitude ratio of the spectrometer so that the main longitudinal mode of the spectrum and its adjacent side mode are displayed on the screen of the spectrometer with appropriate amplitudes. c) According to the instructions of the tunable source to be calibrated, select the wavelength point to be measured and enter: (the number of points to be measured), read and record the amplitude P of the main longitudinal mode and the amplitude P of the side mode with the largest amplitude on spectrometer 1, the difference is the minimum side mode congestion ratio. 6.2.9 Linewidth calibration
The frequency range between two power points on the power spectrum of a single longitudinal mode laser that drops 3dB from the maximum power is expressed in 4
Hz and is called the linewidth.
a) Connect the equipment according to Figure 3.
Tunable
Laser source
Optical isolation
JJF1198—2008
Mach-Zehnder
Interferometer
Figure 3 Linewidth test connection diagram
b) Select the wavelength point and output power according to the instructions of the tunable laser source to be calibrated. Optical signal analyzer
respectively measures the line width value when the relevant switch is closed or opened) Turn on the line width test function of the optical signal analyzer, read out the line width value L and record it.
6.2.10 Calibration of optical output power
a) Connect the equipment according to Figure 2
b) Select the wavelength point and output power of the tunable source according to the requirements of the tunable source manual to be calibrated. c) Read the maximum output power value P of this wavelength point on the spectrometer 6.2.11 Calibration of optical power stability
The characteristic of the change of the output power P of the light source over time is called the output power time stability R of the light source. Connect the equipment.
a) Select the wavelength point and output power according to the requirements of the tunable source manual in Figure
b) Record the optical power value at equal time intervals within the calibrated
time (usually 1), and measure the optical power value P less than the calibrated tunable
n≥10) as required by the tunable laser light source manual.
7Calibration results
Tunable
Laser source
Optical wavelength indication error
Optical wavelength setting repeatability
Where:
Power stability measurement connection diagram
METROLOG
Optical power meter
1A1imex—Aiimin2, A2imax—Aimin1/2—Number of measurements at this wavelength point (i-1, 2,, m, m≥2); Aimax, Arimin
Azimax, Azimim
are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively; are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively. 7.3 Optical wavelength stability
Where: Aimax, Aimin
Ru - + Aimex - Aimin
- The maximum and minimum values of the optical wavelength measured within a time t. The total measurement time is not
1,2,n;
7.4 Side mode suppression ratio
7.5 Optical power stability
Where: Pnx, Pmin—
JJF1198—2008
Pz - P
+ Pmx-Pmm×100%
-The maximum and minimum values of the optical power value measured within a time t: The average value of the output optical power within a time t. P
Where: i—Number of measurements (=1, 2,, n; n210). (4)
After the calibration, the tunable laser light source for communication shall be issued with a calibration certificate. The format of the original calibration record is shown in Appendix A, and the format of the inner page of the calibration certificate is shown in Appendix B. 8 Uncertainty assessment of calibration results
See Appendix C.
9 Recalibration time interval
The unit sending the calibration can decide independently according to the actual use situation, and it is generally recommended to be 1 year. 6
Appendix A
Instrument/equipment name:
Manufacturer:
JJF1198—2008
Original calibration record format
Certificate number:
Model specification
Test unit:
A.1 Appearance and normal working inspection record
Previous calibration certificate, manual
Switch, key, button damage
Display function after power-on
Optical wavelength adjustment range: (
Optical wavelength indication error
Setting value in./m
A.4 Resolution of optical wavelength setting:
A.5 Repeatability of optical wavelength setting
Select wavelength point in a large range
Normal/Abnormal
Measurement value input. /nm1
Factory number:
Error (a-^,)/nm
Set value input/nm
Set value input z/nm
Select wavelength in a small range
Set value/nm
Set value nm
Optical wavelength stability
JJF1198—2008
Measurement value At/nm
Certificate number:
Repeatability/1ma-m/2/nm
SOH NISTIA
measured value in 2./nm
[in nm—in 2imn|/2/nm
value in/nm
measurement value A2/nm
METROL
repeatability|Amax
1/2/nm
repeatability|1/2/nm
measured value in./nm
maximum wavelength value in mz=
minimum wavelength value in mm=
average wavelength value in
stabilityRu=10 (amax
Note: If the automatic measurement
A.7 Side mode suppression ratio
JJF1198—2008
Table (continued)
Certificate number:
Measured value input/nm
SNIASTHG
Attached to the computer printout
Wavelength/nm
Linewidth:
Optical output power
Length/nm
Optical power stability
Output power P/dBm
Power value/dBm4c) of the calibration steps. e) Within the tunable source's adjusted range, calibrate at least one point every 10 nm. 6.2.5 Optical wavelength setting resolution calibration
a) Connect the equipment as shown in Figure 1.
b) Set the tunable source display to the maximum resolution, and set the wavelength of the tunable source to a certain value, and record it.
c) Adjust the wavelength value change of the tunable source to the minimum resolution of the light source. d) Read the wavelength value measured by the optical wavelength meter, and record it. 6.2.6 Optical wavelength setting repeatability
a) Connect the equipment as shown in Figure 1.
b) According to the requirements of the tunable source manual, within a certain wavelength range, set the maximum wavelength point to: and the minimum wavelength point to 2. At the same time, set the resolution of the tunable laser light source to the highest. .c) Use the recording setting times (i=1, 2,, m; m≥2). After each setting, complete the measurement of and on the optical wavelength meter and record them.
d) According to the requirements of the tunable source manual to be calibrated, select wavelength points in a small range and repeat steps 6.2.6b) and 6.2.6c).
6.2.7 Calibration of optical wavelength stability
The change characteristics of a certain wavelength value output by the light source over time t are called the output wavelength time stability R of the light source. a) Connect the equipment according to Figure 1.
b) Select the wavelength point and output power according to the requirements of the tunable source manual to be calibrated. c) Within a certain time (usually 1h), record the optical wavelength value at equal time intervals. The total measurement time should not be less than the requirements of the tunable laser source manual to be calibrated. Measure n optical wavelength values^ (i=1, 2,, n; n2≥10) and record them.
6.2.8 Calibration of near mode suppression ratio
a) Connect the equipment according to Figure 2.
Adjustable laser source
Figure 2 Connection diagram of side mode suppression ratio test
Spectrum analyzer
b) Properly adjust the display wavelength range and amplitude ratio of the spectrometer so that the main longitudinal mode of the spectrum and its adjacent side mode are displayed on the screen of the spectrometer with appropriate amplitude. c) According to the instructions of the tunable source to be calibrated, select the wavelength to be measured and enter: (the number of points to be measured), read and record the amplitude P of the main longitudinal mode and the amplitude P of the side mode with the largest amplitude on the spectrometer 1, the difference is the minimum side mode suppression ratio. 6.2.9 Linewidth calibration
The frequency range between the two power points that drop 3dB from the maximum power on the power spectrum line of a single longitudinal mode laser is expressed in 4
Hz and is called the linewidth.
a) Connect the equipment according to Figure 3.
Tunable
Laser source
Optical isolation
JJF1198—2008
Mach-Zehnder
Interferometer
Figure 3 Line width test connection diagram
b) Select the wavelength point and output power according to the requirements of the tunable laser source manual to be calibrated. Optical signal analyzer
Measure the line width value when the relevant switch is closed or opened respectively) Turn on the line width test function of the optical signal analyzer, read out the line width value L and record it.
6.2.10 Optical output power calibration
a) Connect the equipment according to Figure 2
b) Select the tunable source wavelength point and output power according to the requirements of the tunable source manual to be calibrated. c) Read the maximum output power value P of the wavelength point on the spectrometer. 6.2.11 Calibration of optical power stability
The characteristic of the change of the output power P of the light source over time is called the output power time stability R of the light source. Connect the equipment.
a) Select the wavelength point and output power according to the requirements of the specification of the tuning source. b) Record the optical power value at equal time intervals within the calibrated
time (usually 1), and measure the optical power value P less than the calibrated adjustable
n≥10) as required by the specification of the tuning laser light source.
7Calibration results
Tunable
Laser source
Optical wavelength indication error
Optical wavelength setting repeatability
Where:
Power stability measurement connection diagram
METROLOG
Optical power meter
1A1imex—Aiimin2, A2imax—Aimin1/2—Number of measurements at this wavelength point (i-1, 2,, m, m≥2); Aimax, Arimin
Azimax, Azimim
are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively; are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively. 7.3 Optical wavelength stability
Where: Aimax, Aimin
Ru - + Aimex - Aimin
- The maximum and minimum values of the optical wavelength measured within a time t. The total measurement time is not
1,2,n;
7.4 Side mode suppression ratio
7.5 Optical power stability
Where: Pnx, Pmin—
JJF1198—2008
Pz - P
+ Pmx-Pmm×100%
-The maximum and minimum values of the optical power value measured within a time t: The average value of the output optical power within a time t. P
Where: i—Number of measurements (=1, 2,, n; n210). (4)
After the calibration, the tunable laser light source for communication shall be issued with a calibration certificate. The format of the original calibration record is shown in Appendix A, and the format of the inner page of the calibration certificate is shown in Appendix B. 8 Uncertainty assessment of calibration results
See Appendix C.
9 Recalibration time interval
The unit sending the calibration can decide independently according to the actual use situation, and it is generally recommended to be 1 year. 6
Appendix A
Instrument/equipment name:
Manufacturer:
JJF1198—2008
Original calibration record format
Certificate number:
Model specification
Test unit:
A.1 Appearance and normal working inspection record
Previous calibration certificate, manual
Switch, key, button damage
Display function after power-on
Optical wavelength adjustment range: (
Optical wavelength indication error
Setting value in./m
A.4 Resolution of optical wavelength setting:
A.5 Repeatability of optical wavelength setting
Select wavelength point in a large range
Normal/Abnormal
Measurement value input. /nm1
Factory number:
Error (a-^,)/nm
Set value input/nm
Set value input z/nm
Select wavelength in a small range
Set value/nm
Set value nm
Optical wavelength stability
JJF1198—2008
Measurement value At/nm
Certificate number:
Repeatability/1ma-m/2/nm
SOH NISTIA
measured value in 2./nm
[in nm—in 2imn|/2/nm
value in/nm
measurement value A2/nm
METROL
repeatability|Amax
1/2/nm
repeatability|1/2/nm
measured value in./nm
maximum wavelength value in mz=
minimum wavelength value in mm=
average wavelength value in
stabilityRu=10 (amax
Note: If the automatic measurement
A.7 Side mode suppression ratio
JJF1198—2008
Table (continued)
Certificate number:
Measured value input/nm
SNIASTHG
Attached to the computer printout
Wavelength/nm
Linewidth:
Optical output power
Length/nm
Optical power stability
Output power P/dBm
Power value/dBm4c) of the calibration steps. e) Within the tunable source's adjusted range, calibrate at least one point every 10 nm. 6.2.5 Optical wavelength setting resolution calibration
a) Connect the equipment as shown in Figure 1.
b) Set the tunable source display to the maximum resolution, and set the wavelength of the tunable source to a certain value, and record it.
c) Adjust the wavelength value change of the tunable source to the minimum resolution of the light source. d) Read the wavelength value measured by the optical wavelength meter, and record it. 6.2.6 Optical wavelength setting repeatability
a) Connect the equipment as shown in Figure 1.
b) According to the requirements of the tunable source manual, within a certain wavelength range, set the maximum wavelength point to: and the minimum wavelength point to 2. At the same time, set the resolution of the tunable laser light source to the highest. .c) Use the recording setting times (i=1, 2,, m; m≥2). After each setting, complete the measurement of and on the optical wavelength meter and record them.
d) According to the requirements of the tunable source manual to be calibrated, select wavelength points in a small range and repeat steps 6.2.6b) and 6.2.6c).
6.2.7 Calibration of optical wavelength stability
The change characteristics of a certain wavelength value output by the light source over time t are called the output wavelength time stability R of the light source. a) Connect the equipment according to Figure 1.
b) Select the wavelength point and output power according to the requirements of the tunable source manual to be calibrated. c) Within a certain time (usually 1h), record the optical wavelength value at equal time intervals. The total measurement time should not be less than the requirements of the tunable laser source manual to be calibrated. Measure n optical wavelength values^ (i=1, 2,, n; n2≥10) and record them.
6.2.8 Calibration of near mode suppression ratio
a) Connect the equipment according to Figure 2.
Adjustable laser source
Figure 2 Connection diagram of side mode suppression ratio test
Spectrum analyzer
b) Properly adjust the display wavelength range and amplitude ratio of the spectrometer so that the main longitudinal mode of the spectrum and its adjacent side mode are displayed on the screen of the spectrometer with appropriate amplitude. c) According to the instructions of the tunable source to be calibrated, select the wavelength to be measured and enter: (the number of points to be measured), read and record the amplitude P of the main longitudinal mode and the amplitude P of the side mode with the largest amplitude on the spectrometer 1, the difference is the minimum side mode suppression ratio. 6.2.9 Linewidth calibration
The frequency range between the two power points that drop 3dB from the maximum power on the power spectrum line of a single longitudinal mode laser is expressed in 4
Hz and is called the linewidth.
a) Connect the equipment according to Figure 3.
Tunable
Laser source
Optical isolation
JJF1198—2008
Mach-Zehnder
Interferometer
Figure 3 Line width test connection diagram
b) Select the wavelength point and output power according to the requirements of the tunable laser source manual to be calibrated. Optical signal analyzer
Measure the line width value when the relevant switch is closed or opened respectively) Turn on the line width test function of the optical signal analyzer, read out the line width value L and record it.
6.2.10 Optical output power calibration
a) Connect the equipment according to Figure 2
b) Select the tunable source wavelength point and output power according to the requirements of the tunable source manual to be calibrated. c) Read the maximum output power value P of the wavelength point on the spectrometer. 6.2.11 Calibration of optical power stability
The characteristic of the change of the output power P of the light source over time is called the output power time stability R of the light source. Connect the equipment.
a) Select the wavelength point and output power according to the requirements of the specification of the tuning source. b) Record the optical power value at equal time intervals within the calibrated
time (usually 1), and measure the optical power value P less than the calibrated adjustable
n≥10) as required by the specification of the tuning laser light source.
7Calibration results
Tunable
Laser source
Optical wavelength indication error
Optical wavelength setting repeatability
Where:
Power stability measurement connection diagram
METROLOG
Optical power meter
1A1imex—Aiimin2, A2imax—Aimin1/2—Number of measurements at this wavelength point (i-1, 2,, m, m≥2); Aimax, Arimin
Azimax, Azimim
are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively; are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively. 7.3 Optical wavelength stability
Where: Aimax, Aimin
Ru - + Aimex - Aimin
- The maximum and minimum values of the optical wavelength measured within a time t. The total measurement time is not
1,2,n;
7.4 Side mode suppression ratio
7.5 Optical power stability
Where: Pnx, Pmin—
JJF1198—2008
Pz - P
+ Pmx-Pmm×100%
-The maximum and minimum values of the optical power value measured within a time t: The average value of the output optical power within a time t. P
Where: i—Number of measurements (=1, 2,, n; n210). (4)
After the calibration, the tunable laser light source for communication shall be issued with a calibration certificate. The format of the original calibration record is shown in Appendix A, and the format of the inner page of the calibration certificate is shown in Appendix B. 8 Uncertainty assessment of calibration results
See Appendix C.
9 Recalibration time interval
The unit sending the calibration can decide independently according to the actual use situation, and it is generally recommended to be 1 year. 6
Appendix A
Instrument/equipment name:
Manufacturer:
JJF1198—2008
Original calibration record format
Certificate number:
Model specification
Test unit:
A.1 Appearance and normal working inspection record
Previous calibration certificate, manual
Switch, key, button damage
Display function after power-on
Optical wavelength adjustment range: (
Optical wavelength indication error
Setting value in./m
A.4 Resolution of optical wavelength setting:
A.5 Repeatability of optical wavelength setting
Select wavelength point in a large range
Normal/Abnormal
Measurement value input. /nm1
Factory number:
Error (a-^,)/nm
Set value input/nm
Set value input z/nm
Select wavelength in a small range
Set value/nm
Set value nm
Optical wavelength stability
JJF1198—2008
Measurement value At/nm
Certificate number:
Repeatability/1ma-m/2/nm
SOH NISTIA
measured value in 2./nm
[in nm—in 2imn|/2/nm
value in/nm
measurement value A2/nm
METROL
repeatability|Amax
1/2/nm
repeatability|1/2/nm
measured value in./nm
maximum wavelength value in mz=
minimum wavelength value in mm=
average wavelength value in
stabilityRu=10 (amax
Note: If the automatic measurement
A.7 Side mode suppression ratio
JJF1198—2008
Table (continued)
Certificate number:
Measured value input/nm
SNIASTHG
Attached to the computer printout
Wavelength/nm
Linewidth:
Optical output power
Length/nm
Optical power stability
Output power P/dBm
Power value/dBm6 Repeatability of optical wavelength setting
a) Connect the equipment according to Figure 1.
b) According to the instructions of the tunable source to be calibrated, set the maximum wavelength point to : and the minimum wavelength point to 2 within a certain wavelength range. At the same time, set the resolution of the tunable laser light source to the highest. .c) Record the number of settings (i=1, 2,, m; m≥2). After each setting, complete the measurement of and on the optical wavelength meter and record them.
d) According to the instructions of the tunable source to be calibrated, select a wavelength point in a small range and repeat steps 6.2.6b) and 6.2.6c). www.bzxz.net
6.2.7 Calibration of optical wavelength stability
The characteristic of the change of a certain wavelength value output by the light source with time t is called the output wavelength time stability R of the light source. a) Connect the equipment according to Figure 1.
b) Select the wavelength point and output power according to the instructions of the tunable source to be calibrated. c) Record the optical wavelength value at equal time intervals within a certain time (usually 1h). The total measurement time shall not be less than the requirements of the manual of the tunable laser source to be calibrated. Measure n optical wavelength values ^ (i=1, 2,, n; n2≥10) and record them.
6.2.8 Calibration of near mode suppression ratio
a) Connect the equipment according to Figure 2.
Tunable laser source
Figure 2 Connection diagram of side mode suppression ratio test
Spectrum analyzer
b) Properly adjust the display wavelength range and amplitude ratio of the spectrometer so that the main longitudinal mode of the spectrum and its adjacent side mode are displayed on the screen of the spectrometer with appropriate amplitudes. c) According to the requirements of the manual of the tunable source to be calibrated, select the wavelength point to be measured and enter: (the number of points to be measured). Read and record the difference between the amplitude P of the main longitudinal mode and the amplitude P of the side mode with the largest amplitude on the spectrometer 1, which is the minimum side mode suppression ratio. 6.2.9 Linewidth calibration
The frequency range between two power points on the power spectrum of a single longitudinal mode laser that drops 3 dB from the maximum power is expressed in 4
Hz and is called linewidth.
a) Connect the equipment according to Figure 3.
Tunable
Laser source
Optical isolation
JJF1198—2008
Mach-Zehnder
Interferometer
Figure 3 Linewidth test connection diagram
b) Select the wavelength point and output power according to the requirements of the tunable laser source manual to be calibrated. Optical signal analyzer
Measure the linewidth value when the relevant switch is turned off or on respectively) Turn on the linewidth test function of the optical signal analyzer, read out the linewidth value L and record it.
6.2.10 Calibration of optical output power
a) Connect the equipment according to Figure 2
b) Select the wavelength point and output power of the tunable source according to the requirements of the tunable source manual. c) Read the maximum output power value P of the wavelength point on the spectrometer6.2.11 Calibration of optical power stability
The characteristic of the change of the output power P of the light source over time is called the output power time stability R of the light source. Connect the equipment.
a) Select the wavelength point and output power according to the requirements of the tunable source manual. b) Record the optical power value at equal time intervals within the calibrated
time (usually 1), and measure the optical power value P less than the calibrated
n≥10) of the tunable laser light source manual.
7Calibration results
Tunable
Laser source
Optical wavelength indication error
Optical wavelength setting repeatability
Where:
Power stability measurement connection diagram
METROLOG
Optical power meter
1A1imex—Aiimin2, A2imax—Aimin1/2—Number of measurements at this wavelength point (i-1, 2,, m, m≥2); Aimax, Arimin
Azimax, Azimim
are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively; are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively. 7.3 Optical wavelength stability
Where: Aimax, Aimin
Ru - + Aimex - Aimin
- The maximum and minimum values of the optical wavelength measured within a time t. The total measurement time is not
1,2,n;
7.4 Side mode suppression ratio
7.5 Optical power stability
Where: Pnx, Pmin—
JJF1198—2008
Pz - P
+ Pmx-Pmm×100%
-The maximum and minimum values of the optical power value measured within a time t: The average value of the output optical power within a time t. P
Where: i—Number of measurements (=1, 2,, n; n210). (4)
After the calibration, the tunable laser light source for communication shall be issued with a calibration certificate. The format of the original calibration record is shown in Appendix A, and the format of the inner page of the calibration certificate is shown in Appendix B. 8 Uncertainty assessment of calibration results
See Appendix C.
9 Recalibration time interval
The unit sending the calibration can decide independently according to the actual use situation, and it is generally recommended to be 1 year. 6
Appendix A
Instrument/equipment name:
Manufacturer:
JJF1198—2008
Original calibration record format
Certificate number:
Model specification
Test unit:
A.1 Appearance and normal working inspection record
Previous calibration certificate, manual
Switch, key, button damage
Display function after power-on
Optical wavelength adjustment range: (
Optical wavelength indication error
Setting value in./m
A.4 Resolution of optical wavelength setting:
A.5 Repeatability of optical wavelength setting
Select wavelength point in a large range
Normal/Abnormal
Measurement value input. /nm1
Factory number:
Error (a-^,)/nm
Set value input/nm
Set value input z/nm
Select wavelength in a small range
Set value/nm
Set value nm
Optical wavelength stability
JJF1198—2008
Measurement value At/nm
Certificate number:
Repeatability/1ma-m/2/nm
SOH NISTIA
measured value in 2./nm
[in nm—in 2imn|/2/nm
value in/nm
measurement value A2/nm
METROL
repeatability|Amax
1/2/nm
repeatability|1/2/nm
measured value in./nm
maximum wavelength value in mz=
minimum wavelength value in mm=
average wavelength value in
stabilityRu=10 (amax
Note: If the automatic measurement
A.7 Side mode suppression ratio
JJF1198—2008
Table (continued)
Certificate number:
Measured value input/nm
SNIASTHG
Attached to the computer printout
Wavelength/nm
Linewidth:
Optical output power
Length/nm
Optical power stability
Output power P/dBm
Power value/dBm6 Repeatability of optical wavelength setting
a) Connect the equipment according to Figure 1.
b) According to the instructions of the tunable source to be calibrated, set the maximum wavelength point to : and the minimum wavelength point to 2 within a certain wavelength range. At the same time, set the resolution of the tunable laser light source to the highest. .c) Record the number of settings (i=1, 2,, m; m≥2). After each setting, complete the measurement of and on the optical wavelength meter and record them.
d) According to the instructions of the tunable source to be calibrated, select a wavelength point in a small range and repeat steps 6.2.6b) and 6.2.6c).
6.2.7 Calibration of optical wavelength stability
The characteristic of the change of a certain wavelength value output by the light source with time t is called the output wavelength time stability R of the light source. a) Connect the equipment according to Figure 1.
b) Select the wavelength point and output power according to the instructions of the tunable source to be calibrated. c) Record the optical wavelength value at equal time intervals within a certain time (usually 1h). The total measurement time shall not be less than the requirements of the manual of the tunable laser source to be calibrated. Measure n optical wavelength values ^ (i=1, 2,, n; n2≥10) and record them.
6.2.8 Calibration of near mode suppression ratio
a) Connect the equipment according to Figure 2.
Tunable laser source
Figure 2 Connection diagram of side mode suppression ratio test
Spectrum analyzer
b) Properly adjust the display wavelength range and amplitude ratio of the spectrometer so that the main longitudinal mode of the spectrum and its adjacent side mode are displayed on the screen of the spectrometer with appropriate amplitudes. c) According to the requirements of the manual of the tunable source to be calibrated, select the wavelength point to be measured and enter: (the number of points to be measured). Read and record the difference between the amplitude P of the main longitudinal mode and the amplitude P of the side mode with the largest amplitude on the spectrometer 1, which is the minimum side mode suppression ratio. 6.2.9 Linewidth calibration
The frequency range between two power points on the power spectrum of a single longitudinal mode laser that drops 3 dB from the maximum power is expressed in 4
Hz and is called linewidth.
a) Connect the equipment according to Figure 3.
Tunable
Laser source
Optical isolation
JJF1198—2008
Mach-Zehnder
Interferometer
Figure 3 Linewidth test connection diagram
b) Select the wavelength point and output power according to the requirements of the tunable laser source manual to be calibrated. Optical signal analyzer
Measure the linewidth value when the relevant switch is turned off or on respectively) Turn on the linewidth test function of the optical signal analyzer, read out the linewidth value L and record it.
6.2.10 Calibration of optical output power
a) Connect the equipment according to Figure 2
b) Select the wavelength point and output power of the tunable source according to the requirements of the tunable source manual. c) Read the maximum output power value P of the wavelength point on the spectrometer6.2.11 Calibration of optical power stability
The characteristic of the change of the output power P of the light source over time is called the output power time stability R of the light source. Connect the equipment.
a) Select the wavelength point and output power according to the requirements of the tunable source manual. b) Record the optical power value at equal time intervals within the calibrated
time (usually 1), and measure the optical power value P less than the calibrated
n≥10) of the tunable laser light source manual.
7Calibration results
Tunable
Laser source
Optical wavelength indication error
Optical wavelength setting repeatability
Where:
Power stability measurement connection diagram
METROLOG
Optical power meter
1A1imex—Aiimin2, A2imax—Aimin1/2—Number of measurements at this wavelength point (i-1, 2,, m, m≥2); Aimax, Arimin
Azimax, Azimim
are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively; are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively. 7.3 Optical wavelength stability
Where: Aimax, Aimin
Ru - + Aimex - Aimin
- The maximum and minimum values of the optical wavelength measured within a time t. The total measurement time is not
1,2,n;
7.4 Side mode suppression ratio
7.5 Optical power stability
Where: Pnx, Pmin—
JJF1198—2008
Pz - P
+ Pmx-Pmm×100%
-The maximum and minimum values of the optical power value measured within a time t: The average value of the output optical power within a time t. P
Where: i—Number of measurements (=1, 2,, n; n210). (4)
After the calibration, the tunable laser light source for communication shall be issued with a calibration certificate. The format of the original calibration record is shown in Appendix A, and the format of the inner page of the calibration certificate is shown in Appendix B. 8 Uncertainty assessment of calibration results
See Appendix C.
9 Recalibration time interval
The unit sending the calibration can decide independently according to the actual use situation, and it is generally recommended to be 1 year. 6
Appendix A
Instrument/equipment name:
Manufacturer:
JJF1198—2008
Original calibration record format
Certificate number:
Model specification
Test unit:
A.1 Appearance and normal working inspection record
Previous calibration certificate, manual
Switch, key, button damage
Display function after power-on
Optical wavelength adjustment range: (
Optical wavelength indication error
Setting value in./m
A.4 Resolution of optical wavelength setting:
A.5 Repeatability of optical wavelength setting
Select wavelength point in a large range
Normal/Abnormal
Measurement value input. /nm1
Factory number:
Error (a-^,)/nm
Set value input/nm
Set value input z/nm
Select wavelength in a small range
Set value/nm
Set value nm
Optical wavelength stability
JJF1198—2008
Measurement value At/nm
Certificate number:
Repeatability/1ma-m/2/nm
SOH NISTIA
measured value in 2./nm
[in nm—in 2imn|/2/nm
value in/nm
measurement value A2/nm
METROL
repeatability|Amax
1/2/nm
repeatability|1/2/nm
measured value in./nm
maximum wavelength value in mz=
minimum wavelength value in mm=
average wavelength value in
stabilityRu=10 (amax
Note: If the automatic measurement
A.7 Side mode suppression ratio
JJF1198—2008
Table (continued)
Certificate number:
Measured value input/nm
SNIASTHG
Attached to the computer printout
Wavelength/nm
Linewidth:
Optical output power
Length/nm
Optical power stability
Output power P/dBm
Power value/dBm8 Calibration of near mode suppression ratio
a) Connect the equipment according to Figure 2.
Adjustable laser source
Figure 2 Connection diagram of side mode suppression ratio test
Spectrum analyzer
b) Properly adjust the display wavelength range and amplitude ratio of the spectrometer so that the main longitudinal mode of the spectrum and its adjacent side mode are displayed on the screen of the spectrometer with appropriate amplitude. c) According to the instructions of the tunable source to be calibrated, select the wavelength to be measured and enter: (the number of points to be measured), read and record the amplitude P of the main longitudinal mode and the amplitude P of the side mode with the largest amplitude on the spectrometer 1, the difference is the minimum side mode suppression ratio. 6.2.9 Linewidth calibration
The frequency range between the two power points on the power spectrum line of a single longitudinal mode laser that drops 3dB from the maximum power, expressed in 4
Hz, is called the linewidth.
a) Connect the equipment according to Figure 3.
Tunable
Laser source
Optical isolation
JJF1198—2008
Mach-Zehnder
Interferometer
Figure 3 Line width test connection diagram
b) Select the wavelength point and output power according to the requirements of the tunable laser source manual to be calibrated. Optical signal analyzer
Measure the line width value when the relevant switch is closed or opened respectively) Turn on the line width test function of the optical signal analyzer, read out the line width value L and record it.
6.2.10 Optical output power calibration
a) Connect the equipment according to Figure 2
b) Select the tunable source wavelength point and output power according to the requirements of the tunable source manual to be calibrated. c) Read the maximum output power value P of the wavelength point on the spectrometer. 6.2.11 Calibration of optical power stability
The characteristic of the change of the output power P of the light source over time is called the output power time stability R of the light source. Connect the equipment.
a) Select the wavelength point and output power according to the requirements of the specification of the tuning source. b) Record the optical power value at equal time intervals within the calibrated
time (usually 1), and measure the optical power value P less than the calibrated adjustable
n≥10) as required by the specification of the tuning laser light source.
7Calibration results
Tunable
Laser source
Optical wavelength indication error
Optical wavelength setting repeatability
Where:
Power stability measurement connection diagram
METROLOG
Optical power meter
1A1imex—Aiimin2, A2imax—Aimin1/2—Number of measurements at this wavelength point (i-1, 2,, m, m≥2); Aimax, Arimin
Azimax, Azimim
are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively; are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively. 7.3 Optical wavelength stability
Where: Aimax, Aimin
Ru - + Aimex - Aimin
- The maximum and minimum values of the optical wavelength measured within a time t. The total measurement time is not
1,2,n;
7.4 Side mode suppression ratio
7.5 Optical power stability
Where: Pnx, Pmin—
JJF1198—2008
Pz - P
+ Pmx-Pmm×100%
-The maximum and minimum values of the optical power value measured within a time t: The average value of the output optical power within a time t. P
Where: i—Number of measurements (=1, 2,, n; n210). (4)
After the calibration, the tunable laser light source for communication shall be issued with a calibration certificate. The format of the original calibration record is shown in Appendix A, and the format of the inner page of the calibration certificate is shown in Appendix B. 8 Uncertainty assessment of calibration results
See Appendix C.
9 Recalibration time interval
The unit sending the calibration can decide independently according to the actual use situation, and it is generally recommended to be 1 year. 6
Appendix A
Instrument/equipment name:
Manufacturer:
JJF1198—2008
Original calibration record format
Certificate number:
Model specification
Test unit:
A.1 Appearance and normal working inspection record
Previous calibration certificate, manual
Switch, key, button damage
Display function after power-on
Optical wavelength adjustment range: (
Optical wavelength indication error
Setting value in./m
A.4 Resolution of optical wavelength setting:
A.5 Repeatability of optical wavelength setting
Select wavelength point in a large range
Normal/Abnormal
Measurement value input. /nm1
Factory number:
Error (a-^,)/nm
Set value input/nm
Set value input z/nm
Select wavelength in a small range
Set value/nm
Set value nm
Optical wavelength stability
JJF1198—2008
Measurement value At/nm
Certificate number:
Repeatability/1ma-m/2/nm
SOH NISTIA
measured value in 2./nm
[in nm—in 2imn|/2/nm
value in/nm
measurement value A2/nm
METROL
repeatability|Amax
1/2/nm
repeatability|1/2/nm
measured value in./nm
maximum wavelength value in mz=
minimum wavelength value in mm=
average wavelength value in
stabilityRu=10 (amax
Note: If the automatic measurement
A.7 Side mode suppression ratio
JJF1198—2008
Table (continued)
Certificate number:
Measured value input/nm
SNIASTHG
Attached to the computer printout
Wavelength/nm
Linewidth:
Optical output power
Length/nm
Optical power stability
Output power P/dBm
Power value/dBm8 Calibration of near mode suppression ratio
a) Connect the equipment according to Figure 2.
Adjustable laser source
Figure 2 Connection diagram of side mode suppression ratio test
Spectrum analyzer
b) Properly adjust the display wavelength range and amplitude ratio of the spectrometer so that the main longitudinal mode of the spectrum and its adjacent side mode are displayed on the screen of the spectrometer with appropriate amplitude. c) According to the instructions of the tunable source to be calibrated, select the wavelength to be measured and enter: (the number of points to be measured), read and record the amplitude P of the main longitudinal mode and the amplitude P of the side mode with the largest amplitude on the spectrometer 1, the difference is the minimum side mode suppression ratio. 6.2.9 Linewidth calibration
The frequency range between the two power points on the power spectrum line of a single longitudinal mode laser that drops 3dB from the maximum power, expressed in 4
Hz, is called the linewidth.
a) Connect the equipment according to Figure 3.
Tunable
Laser source
Optical isolation
JJF1198—2008
Mach-Zehnder
Interferometer
Figure 3 Line width test connection diagram
b) Select the wavelength point and output power according to the requirements of the tunable laser source manual to be calibrated. Optical signal analyzer
Measure the line width value when the relevant switch is closed or opened respectively) Turn on the line width test function of the optical signal analyzer, read out the line width value L and record it.
6.2.10 Optical output power calibration
a) Connect the equipment according to Figure 2
b) Select the tunable source wavelength point and output power according to the requirements of the tunable source manual to be calibrated. c) Read the maximum output power value P of the wavelength point on the spectrometer. 6.2.11 Calibration of optical power stability
The characteristic of the change of the output power P of the light source over time is called the output power time stability R of the light source. Connect the equipment.
a) Select the wavelength point and output power according to the requirements of the specification of the tuning source. b) Record the optical power value at equal time intervals within the calibrated
time (usually 1), and measure the optical power value P less than the calibrated adjustable
n≥10) as required by the specification of the tuning laser light source.
7Calibration results
Tunable
Laser source
Optical wavelength indication error
Optical wavelength setting repeatability
Where:
Power stability measurement connection diagram
METROLOG
Optical power meter
1A1imex—Aiimin2, A2imax—Aimin1/2—Number of measurements at this wavelength point (i-1, 2,, m, m≥2); Aimax, Arimin
Azimax, Azimim
are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively; are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively. 7.3 Optical wavelength stability
Where: Aimax, Aimin
Ru - + Aimex - Aimin
- The maximum and minimum values of the optical wavelength measured within a time t. The total measurement time is not
1,2,n;
7.4 Side mode suppression ratio
7.5 Optical power stability
Where: Pnx, Pmin—
JJF1198—2008
Pz - P
+ Pmx-Pmm×100%
-The maximum and minimum values of the optical power value measured within a time t: The average value of the output optical power within a time t. P
Where: i—Number of measurements (=1, 2,, n; n210). (4)
After the calibration, the tunable laser light source for communication shall be issued with a calibration certificate. The format of the original calibration record is shown in Appendix A, and the format of the inner page of the calibration certificate is shown in Appendix B. 8 Uncertainty assessment of calibration results
See Appendix C.
9 Recalibration time interval
The unit sending the calibration can decide independently according to the actual use situation, and it is generally recommended to be 1 year. 6
Appendix A
Instrument/equipment name:
Manufacturer:
JJF1198—2008
Original calibration record format
Certificate number:
Model specification
Test unit:
A.1 Appearance and normal working inspection record
Previous calibration certificate, manual
Switch, key, button damage
Display function after power-on
Optical wavelength adjustment range: (
Optical wavelength indication error
Setting value in./m
A.4 Resolution of optical wavelength setting:
A.5 Repeatability of optical wavelength setting
Select wavelength point in a large range
Normal/Abnormal
Measurement value input. /nm1
Factory number:
Error (a-^,)/nm
Set value input/nm
Set value input z/nm
Select wavelength in a small range
Set value/nm
Set value nm
Optical wavelength stability
JJF1198—2008
Measurement value At/nm
Certificate number:
Repeatability/1ma-m/2/nm
SOH NISTIA
measured value in 2./nm
[in nm—in 2imn|/2/nm
value in/nm
measurement value A2/nm
METROL
repeatability|Amax
1/2/nm
repeatability|1/2/nm
measured value in./nm
maximum wavelength value in mz=
minimum wavelength value in mm=
average wavelength value in
stabilityRu=10 (amax
Note: If the automatic measurement
A.7 Side mode suppression ratio
JJF1198—2008
Table (continued)
Certificate number:
Measured value input/nm
SNIASTHG
Attached to the computer printout
Wavelength/nm
Linewidth:
Optical output power
Length/nm
Optical power stability
Output power P/dBm
Power value/dBm. Connect the equipment.
a) Select the wavelength point and output power according to the requirements of the tuning source manual. b) Record the optical power value at equal time intervals within the calibrated
time (usually 1), and measure the optical power value P less than the calibrated adjustable
n≥10) as required by the tuning laser source manual.
7Calibration results
Tunable
Laser source
Optical wavelength indication error
Optical wavelength setting repeatability
Where:
Power stability measurement connection diagram
METROLOG
Optical power meter
1A1imex—Aiimin2, A2imax—Aimin1/2—Number of measurements at this wavelength point (i-1, 2,, m, m≥2); Aimax, Arimin
Azimax, Azimim
are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively; are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively. 7.3 Optical wavelength stability
Where: Aimax, Aimin
Ru - + Aimex - Aimin
- The maximum and minimum values of the optical wavelength measured within a time t. The total measurement time is not
1,2,n;
7.4 Side mode suppression ratio
7.5 Optical power stability
Where: Pnx, Pmin—
JJF1198—2008
Pz - P
+ Pmx-Pmm×100%
-The maximum and minimum values of the optical power value measured within a time t: The average value of the output optical power within a time t. P
Where: i—Number of measurements (=1, 2,, n; n210). (4)
After the calibration, the tunable laser light source for communication shall be issued with a calibration certificate. The format of the original calibration record is shown in Appendix A, and the format of the inner page of the calibration certificate is shown in Appendix B. 8 Uncertainty assessment of calibration results
See Appendix C.
9 Recalibration time interval
The unit sending the calibration can decide independently according to the actual use situation, and it is generally recommended to be 1 year. 6
Appendix A
Instrument/equipment name:
Manufacturer:
JJF1198—2008
Original calibration record format
Certificate number:
Model specification
Test unit:
A.1 Appearance and normal working inspection record
Previous calibration certificate, manual
Switch, key, button damage
Display function after power-on
Optical wavelength adjustment range: (
Optical wavelength indication error
Setting value in./m
A.4 Resolution of optical wavelength setting:
A.5 Repeatability of optical wavelength setting
Select wavelength point in a large range
Normal/Abnormal
Measurement value input. /nm1
Factory number:
Error (a-^,)/nm
Set value input/nm
Set value input z/nm
Select wavelength in a small range
Set value/nm
Set value nm
Optical wavelength stability
JJF1198—2008
Measurement value At/nm
Certificate number:
Repeatability/1ma-m/2/nm
SOH NISTIA
measured value in 2./nm
[in nm—in 2imn|/2/nm
value in/nm
measurement value A2/nm
METROL
repeatability|Amax
1/2/nm
repeatability|1/2/nm
measured value in./nm
maximum wavelength value in mz=
minimum wavelength value in mm=
average wavelength value in
stabilityRu=10 (amax
Note: If the automatic measurement
A.7 Side mode suppression ratio
JJF1198—2008
Table (continued)
Certificate number:
Measured value input/nm
SNIASTHG
Attached to the computer printout
Wavelength/nm
Linewidth:
Optical output power
Length/nm
Optical power stability
Output power P/dBm
Power value/dBm. Connect the equipment.
a) Select the wavelength point and output power according to the requirements of the tuning source manual. b) Record the optical power value at equal time intervals within the calibrated
time (usually 1), and measure the optical power value P less than the calibrated adjustable
n≥10) as required by the tuning laser source manual.
7Calibration results
Tunable
Laser source
Optical wavelength indication error
Optical wavelength setting repeatability
Where:
Power stability measurement connection diagram
METROLOG
Optical power meter
1A1imex—Aiimin2, A2imax—Aimin1/2—Number of measurements at this wavelength point (i-1, 2,, m, m≥2); Aimax, Arimin
Azimax, Azimim
are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively; are the maximum and minimum values of the optical wavelength A obtained by m measurements respectively. 7.3 Optical wavelength stability
Where: Aimax, Aimin
Ru - + Aimex - Aimin
- The maximum and minimum values of the optical wavelength measured within a time t. The total measurement time is not
1,2,n;
7.4 Side mode suppression ratio
7.5 Optical power stability
Where: Pnx, Pmin—
JJF1198—2008
Pz - P
+ Pmx-Pmm×100%
-The maximum and minimum values of the optical power value measured within a time t: The average value of the output optical power within a time t. P
Where: i—Number of measurements (=1, 2,, n; n210). (4)
After the calibration, the tunable laser light source for communication shall be issued with a calibration certificate. The format of the original calibration record is shown in Appendix A, and the format of the inner page of the calibration certificate is shown in Appendix B. 8
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