CN110838871B - Optical wave test module automatic calibration method based on optical fiber network - Google Patents
Optical wave test module automatic calibration method based on optical fiber network Download PDFInfo
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- CN110838871B CN110838871B CN201911153788.9A CN201911153788A CN110838871B CN 110838871 B CN110838871 B CN 110838871B CN 201911153788 A CN201911153788 A CN 201911153788A CN 110838871 B CN110838871 B CN 110838871B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
- H04J14/0201—Add-and-drop multiplexing
- H04J14/0202—Arrangements therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q11/00—Selecting arrangements for multiplex systems
- H04Q11/0001—Selecting arrangements for multiplex systems using optical switching
- H04Q11/0062—Network aspects
- H04Q2011/0079—Operation or maintenance aspects
- H04Q2011/0083—Testing; Monitoring
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Abstract
The invention belongs to the technical field of photoelectric testing, and relates to a calibration method of a light wave testing module. An optical wave test module automatic calibration method based on an optical fiber network comprises the following steps: step 1: building a calibration optical fiber network; step 2: selecting a certain calibration wavelength of a light source module to be calibrated to sequentially calibrate the optical attenuator module, the light source module and the optical power meter module; and step 3: replacing the calibration wavelength and repeating the operation of the step 2; and 4, step 4: and (3) completing the total calibration of the three modules until all the calibration wavelengths of the light source module to be calibrated are operated according to the step (2). The method of the invention has automatic calibration in the whole process and low manual participation; and less standard instruments are used, and the calibration cost is low.
Description
Technical Field
The invention belongs to the technical field of photoelectric testing, and relates to a calibration method of a light wave testing module.
Background
The modularized slot type optical wave test system is an indispensable automatic test tool in the field of current optical communication. The optical power, the light source, the attenuator and other optical measuring instruments are integrated into the optical wave testing module, so that most of optical testing functions can be completed through a whole set of platform. The existing calibration scheme is single calibration, and respective calibration platforms are built to calibrate the optical power meter, the light source and the attenuator respectively, so that three sets of different optical paths and three sets of standard instruments need to be built, the cost is high, and the manual error rate is high.
Disclosure of Invention
In order to solve the problems of the existing calibration technology, the invention provides an automatic calibration method of a light wave test module based on an optical fiber network, which can finish the calibration of 3 modules only by building a set of calibration system, and adopts the remote operation of a computer in the whole process, thereby reducing the manual participation, reducing the error rate and improving the accuracy.
The technical scheme adopted by the invention for solving the technical problems is as follows: an optical wave test module automatic calibration method based on an optical fiber network comprises the following steps:
step 1: building a calibration optical fiber network;
step 2: selecting a certain calibration wavelength of a light source module to be calibrated to sequentially calibrate the optical attenuator module, the light source module and the optical power meter module;
and step 3: replacing the calibration wavelength and repeating the operation of the step 2;
and 4, step 4: and (3) completing the total calibration of the three modules until all the calibration wavelengths of the light source module to be calibrated are operated according to the step (2).
As a further improvement of the invention, the calibration optical fiber network of the optical wave test module comprises a wavelength division multiplexer, an optical switch and a standard power meter; the standard power meter and the optical power meter module to be tested are connected with the optical attenuator module to be tested through switching of the optical switch.
As a further improvement of the present invention, the step 2 comprises: (1) calibrating an optical attenuator module
Switching the optical switch to a standard optical power meter branch;
starting a certain wavelength light source to be calibrated of the light source module to be measured;
controlling the step of the motor 100 of the attenuator module to be tested to obtain the position of the motor corresponding to each attenuation value of 0.01dB, namely the calibration value of the attenuator;
(2) calibration light source module
Setting the attenuation value of the calibrated attenuator to 0 dB;
adjusting a potentiometer corresponding to the wavelength on the light source module until the standard optical power meter displays a stable factory optical power value, namely a calibration output optical power value P1 of the light source;
(3) calibration optical power meter module
Switching the optical switch to an optical power meter branch to be tested;
and (3) carrying out 10dB decrement on the attenuation value of the calibrated attenuator until the attenuation value of the attenuator is 60dB, recording a power value P displayed by the optical power meter to be measured after each attenuation, comparing the power value P with P1-10, P1-20, P1-30, P1-40, P1-50 and P1-60, wherein the difference value is the calibration value of the optical power meter module to be measured, and writing the calibration value into a storage chip.
Compared with the prior art, the automatic calibration method of the optical wave test module based on the optical fiber network has the following beneficial effects:
1. the calibration of the three modules can be completed only by building a set of calibration optical fiber network, and the cost for purchasing standard instruments is saved.
2. In the calibration engineering of the light source, the optical attenuator and the optical power meter, a calibration platform does not need to be manually switched, a standard instrument does not need to be manually operated, data is not manually recorded, the calibration process is remotely controlled by a computer, and labor cost and time are saved.
3. The calibration optical fiber network is built at one time, does not need to be changed for a long time, and can be repeatedly used on a production line.
Drawings
FIG. 1 is a flowchart of an automatic calibration method for a light wave test module based on an optical fiber network according to an embodiment of the present invention;
fig. 2 is a diagram of a calibration optical network architecture constructed according to an embodiment of the present invention.
Detailed Description
The following describes the method for automatically calibrating a lightwave test module based on an optical fiber network according to an embodiment of the present invention in detail with reference to the embodiments and the accompanying drawings.
The flow of the method for automatically calibrating a lightwave test module based on an optical fiber network provided by the embodiment is shown in fig. 1, and the method comprises the following specific steps:
step 1: building a calibration optical fiber network of the optical wave test module shown in fig. 2, wherein the calibration optical fiber network comprises a Wavelength Division Multiplexer (WDM), an optical switch and a standard power meter; the light source module to be tested is connected with the optical attenuator module to be tested through a Wavelength Division Multiplexer (WDM), and the standard power meter module and the optical power meter module to be tested are connected with the optical attenuator module to be tested through the switching of the optical switch. The light source module to be tested comprises light sources with four wavelengths of 1260 nm, 1310 nm, 1550 nm and 1625 nm.
Step 2:
calibrating an optical attenuator module
(1): switching the optical switch to a standard optical power meter branch;
(2): starting one wavelength light source to be calibrated of the light source module to be calibrated;
(3): controlling the step of the motor 100 of the attenuator module to be tested to obtain the position of the motor corresponding to each attenuation value of 0.01dB, namely the calibration value of the attenuator;
calibrating the light source module;
(1): setting the attenuation value of the calibrated attenuator to 0 dB;
(2): adjusting a potentiometer corresponding to the wavelength on the light source module until the standard optical power meter displays a stable factory optical power value, namely a calibration output optical power value P1 of the light source;
calibrating the optical power meter module;
(1): switching the optical switch to an optical power meter branch to be tested;
(2): the attenuation value of the calibrated attenuator is decreased by 10dB until the attenuation value of the attenuator is 60dB, the power value P displayed by the optical power meter to be measured after each attenuation is recorded, the power value P is compared with the power values (P1-10), (P1-20), (P1-30), (P1-40), (P1-50) and (P1-60), the difference value is the calibration value of the optical power meter module to be measured, and the calibration value is written into a storage chip;
and 3, replacing the light source with the wavelength to be calibrated, and repeating the operation in the step 2 to finish the calibration of the three modules with the corresponding wavelengths.
And completing the calibration of three modules until the four wavelengths to be calibrated, namely completing the total calibration of 3 modules.
Claims (1)
1. An optical wave test module automatic calibration method based on an optical fiber network is characterized by comprising the following steps:
step 1: building a calibration optical fiber network; the calibration optical fiber network comprises a wavelength division multiplexer, an optical switch and a standard power meter; the standard power meter and the optical power meter module to be tested are connected with the optical attenuator module to be tested through switching of an optical switch; the light source module to be tested comprises light sources with four wavelengths of 1260 nm, 1310 nm, 1550 nm and 1625 nm;
step 2: selecting a certain calibration wavelength of a light source module to be calibrated, and sequentially calibrating the optical attenuator module, the light source module and the optical power meter module;
and step 3: replacing the calibration wavelength and repeating the operation of the step 2;
and 4, step 4: completing the whole calibration of the three modules until all the calibration wavelengths of the light source module to be calibrated are operated according to the step 2;
the step 2 comprises the following steps:
(1) calibrating an optical attenuator module
Switching the optical switch to a standard optical power meter branch;
starting a certain wavelength light source to be calibrated of the light source module to be measured;
controlling the step of the motor 100 of the attenuator module to be tested to obtain the position of the motor corresponding to each attenuation value of 0.01dB, namely the calibration value of the attenuator;
(2) calibration light source module
Setting the attenuation value of the calibrated attenuator to 0 dB;
adjusting a potentiometer corresponding to the wavelength on the light source module until the standard optical power meter displays a stable factory optical power value, namely a calibration output optical power value P1 of the light source;
(3) calibrating optical power meter module
Switching the optical switch to an optical power meter branch to be tested;
and (3) decreasing the attenuation value of the calibrated attenuator by 10dB until the attenuation value of the attenuator is 60dB, recording a power value P displayed by the optical power meter to be measured after each attenuation, comparing the power value P with P1-10, P1-20, P1-30, P1-40, P1-50 and P1-60, wherein the difference value is the calibration value of the optical power meter module to be measured, and writing the calibration value into a memory chip.
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| CN111998944A (en) * | 2020-08-31 | 2020-11-27 | 中电科仪器仪表有限公司 | Multi-light-source-based precise calibration device and method for broadband spectrometer |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4927266A (en) * | 1987-03-30 | 1990-05-22 | Anritsu Corporation | Optical signal generating apparatus and optical power meter calibrating system using the same |
| US6590644B1 (en) * | 2001-01-12 | 2003-07-08 | Ciena Corporation | Optical module calibration system |
| CN105352598A (en) * | 2015-12-11 | 2016-02-24 | 中国电子科技集团公司第四十一研究所 | Multichannel optical power meter automatic calibration system and method |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4927266A (en) * | 1987-03-30 | 1990-05-22 | Anritsu Corporation | Optical signal generating apparatus and optical power meter calibrating system using the same |
| US6590644B1 (en) * | 2001-01-12 | 2003-07-08 | Ciena Corporation | Optical module calibration system |
| CN105352598A (en) * | 2015-12-11 | 2016-02-24 | 中国电子科技集团公司第四十一研究所 | Multichannel optical power meter automatic calibration system and method |
Non-Patent Citations (1)
| Title |
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| 基于虚拟仪器的光纤多参数自动校准测试平台;陈挺等;《中国测试》;20151231(第12期);全文 * |
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