CN216290915U - Optical passive device insertion loss detection system - Google Patents
Optical passive device insertion loss detection system Download PDFInfo
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- CN216290915U CN216290915U CN202122996369.0U CN202122996369U CN216290915U CN 216290915 U CN216290915 U CN 216290915U CN 202122996369 U CN202122996369 U CN 202122996369U CN 216290915 U CN216290915 U CN 216290915U
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Abstract
The utility model relates to an insertion loss detection system of an optical passive device, which comprises a light source, a polarization controller, a first optical splitter, a first connecting assembly, a second connecting assembly and a multi-channel optical power meter, wherein the light source, the polarization controller and the first optical splitter are sequentially coupled and connected, one output channel of the first optical splitter is coupled and connected with an input channel of a tested device, a plurality of output channels of the tested device are respectively coupled and connected with a plurality of channels of the multi-channel optical power meter in a one-to-one correspondence manner through the first connecting assembly, and the other output channel of the first optical splitter is directly coupled and connected with a zero clearing channel of the multi-channel optical power meter through the second connecting assembly. The first optical splitter is used for monitoring the light source to output one path of signal, so that the fluctuation of the power value of the light source can be found conveniently in time during subsequent testing, the insertion loss value of a tested product can be corrected conveniently, the accuracy of a detection result is ensured, the structure is simple, the use is convenient, and the expansion can be realized according to requirements.
Description
Technical Field
The utility model relates to the technical field of optical communication, in particular to an insertion loss detection system for an optical passive device.
Background
The insertion loss is the most common and important index of the optical passive device, and the conventional test method is to clear an optical path before testing, insert a tested area into the optical path and then test the optical passive device by a method of directly reading a value through an optical power meter. However, the following technical problems exist in the testing method:
1. the stability of the light source can affect the accuracy of the test result;
2. when the light source circuit is in abnormal butt joint during zero clearing, the reference value is inaccurate, and the test value is inaccurate.
Disclosure of Invention
The utility model provides a system for detecting the insertion loss of an optical passive device, aiming at the defects of the prior art.
The technical scheme for solving the technical problems is as follows: the light source, the polarization controller and the first optical splitter are sequentially coupled and connected, one output channel of the first optical splitter is coupled and connected with an input channel of a tested device, a plurality of output channels of the tested device are coupled and connected with a plurality of channels of the multichannel optical power meter in a one-to-one correspondence mode through first connecting components respectively, and the other output channel of the first optical splitter is directly coupled and connected with a zero clearing channel of the multichannel optical power meter through a second connecting component.
The utility model has the beneficial effects that: according to the insertion loss detection system of the optical passive device, the optical signal output by the light source is divided into two paths through the first optical splitter, one path is output to the tested device, and the other path is output to the zero clearing channel of the multi-channel optical power meter, so that when the zero clearing is carried out on the original state by the multi-channel optical power meter, the fluctuation of the power value of the light source can be conveniently found in time during subsequent testing, the insertion loss value of the tested product can be conveniently corrected through the fluctuation value of the power value of the light source, the influence of the fluctuation of the power value of the light source is avoided, the accuracy of a detection result is ensured, the structure is simple, the use is convenient, and the expansion can be carried out according to requirements.
On the basis of the technical scheme, the utility model can be further improved as follows:
further: the connecting component comprises two optical fiber connectors and a flange plate, wherein one optical fiber connector is in coupling connection with one output channel of a tested device, the other optical fiber connector is in coupling connection with the output channel corresponding to the multichannel optical power meter, and the two optical fiber connectors are in coupling connection through the flange plate.
The beneficial effects of the further scheme are as follows: the optical fiber connector can be coupled with one output channel of the tested device conveniently, so that the optical fiber connector is convenient to disassemble and assemble during zero clearing and testing, convenient to operate and stable in optical path connection.
Further: the optical passive device insertion loss detection system further comprises a workstation, and the workstation is electrically connected with the multichannel optical power meter.
The beneficial effects of the further scheme are as follows: the detection value of each channel of the detected product and the zero clearing value of the zero clearing channel can be obtained in real time through the workstation, so that the workstation can calibrate the measured value of the detected product according to the zero clearing value of the zero clearing channel in real time, exciting calibration and display of the detection result are achieved, the accuracy is high, and the operation is convenient and visual.
Further: the system for detecting the insertion loss of the optical passive device further comprises a second optical splitter, the number of the first optical splitter, the number of the multi-channel optical power meter and the number of the workstations are the same as the number of output channels of the second optical splitter, the input channels of the second optical splitter are coupled with the output channels of the polarization controller, and the output channels of the second optical splitter are respectively coupled with the input channels of the first optical splitters in a one-to-one correspondence manner.
The beneficial effects of the further scheme are as follows: the second optical splitter is arranged, and the first optical splitters, the multi-channel optical power meter and the workstation are matched, so that the automatic expansion of the whole system can be realized, and different actual scene requirements can be met.
Further: the optical passive device insertion loss detection system comprises a server, wherein the server is electrically connected with all the light sources, the polarization controllers and the workstations respectively.
The beneficial effects of the further scheme are as follows: by the server, the simultaneous testing of a plurality of tested products and the comprehensive control and adjustment of the whole system can be met, and automatic testing calibration, display and coordination control are realized.
Drawings
Fig. 1 is a schematic structural diagram of a zero clearing time of an insertion loss detection system of an optical passive device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an insertion loss detection system of an optical passive device according to an embodiment of the present invention during testing;
fig. 3 is a schematic structural diagram of an insertion loss detection system of an optical passive device according to another embodiment of the present invention during testing.
In the drawings, the components represented by the respective reference numerals are listed below:
1. the system comprises a light source, 2, a polarization controller, 3, a first optical splitter, 4, a device to be tested, 5, a first connecting assembly, 6, a second connecting assembly, 7, a multichannel optical power meter, 8, a workstation, 9, a second optical splitter, 10 and a server.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1 and fig. 2, an optical passive device insertion loss detection system includes a light source 1, a polarization controller 2, a first optical splitter 3, first connection components 5, second connection components 6, and a multi-channel optical power meter 7, where the first connection components 5 are the same in number as channels of a device 4 to be tested and correspond to the channels one by one, the light source 1, the polarization controller 2, and the first optical splitter 3 are coupled and connected in sequence, one output channel of the first optical splitter 3 is coupled and connected with an input channel of the device 4 to be tested, a plurality of output channels of the device 4 to be tested are coupled and connected to a plurality of channels of the multi-channel optical power meter 6 one by one through the first connection components 5, and another output channel of the first optical splitter 3 is directly coupled and connected to a clear channel of the multi-channel optical power meter 7 through the second connection component 5.
According to the insertion loss detection system of the optical passive device, the optical signal output by the light source 1 is divided into two paths through the first optical splitter 3, one path is output to the tested device 4, and the other path is output to the zero clearing channel of the multi-channel optical power meter 6, so that the multi-channel optical power meter 6 can record zero clearing of an original state during zero clearing, fluctuation of the power value of the light source 1 can be found conveniently in time during subsequent testing, the insertion loss value of a tested product is corrected through the fluctuation value of the power value of the light source 1, the influence of the fluctuation of the power value of the light source is avoided, the accuracy of a detection result is guaranteed, the structure is simple, the use is convenient, and the expansion can be carried out according to requirements.
In one or more embodiments of the present invention, the first optical splitter 3 may be a 1 × 2 optical splitter.
In one or more embodiments of the present invention, the connection component 5 includes two fiber connectors and a flange, wherein one of the fiber connectors is coupled to one of the output channels of the device under test 4, the other fiber connector is coupled to the corresponding output channel of the multichannel optical power meter 7, and the two fiber connectors are coupled through the flange. The optical fiber connector can be conveniently coupled with one output channel of the tested device 4, so that the optical fiber connector is convenient to clean and disassemble and assemble during testing, convenient to operate and stable in optical path connection.
In one or more embodiments of the present invention, the optical passive device insertion loss detection system further includes a workstation 8, and the workstation 8 is electrically connected to the multichannel optical power meter 7. The detection value of each channel of the tested product 4 and the zero clearing value of the zero clearing channel can be obtained in real time by arranging the workstation 8, so that the workstation 8 can calibrate the measurement value of the tested product in real time according to the zero clearing value of the zero clearing channel, exciting calibration and display of the detection result are realized, the accuracy is high, and the convenience and the intuition are realized. In this embodiment, the workstation 8 may be an existing PC terminal.
As shown in fig. 3, in one or more embodiments of the present invention, the system for detecting insertion loss of an optical passive device further includes a second optical splitter 9, the number of the first optical splitter 3, the number of the multi-channel optical power meter 7, and the number of the workstations 8 are all the same as the number of the output channels of the second optical splitter 9, the input channels of the second optical splitter 9 are coupled to the output channels of the polarization controller 2, and the plurality of output channels of the second optical splitter 9 are respectively coupled to the input channels of the plurality of first optical splitters 3 in a one-to-one correspondence manner. By arranging the second optical splitter 9 and matching with the plurality of first optical splitters 3, the multi-channel optical power meter 7 and the workstation 8, the whole system can be automatically expanded to meet different actual scene requirements.
Here, the second optical splitter 9 may be a 1 × 2 optical splitter, or may be an optical splitter such as 1 × 4 or 1 × 8 optical splitter, and is actually selected according to the requirements of a specific application scenario.
In one or more embodiments of the present invention, the optical passive device insertion loss detection system includes a server 10, and the server 10 is electrically connected to all of the light sources 1, the polarization controllers 2, and the workstations 8. By arranging the server 10, the simultaneous testing of a plurality of tested products and the comprehensive control and adjustment of the whole system can be met, and automatic testing calibration, display and coordination control are realized.
The utility model relates to a system for testing the insertion loss of an optical passive device, which comprises the following working processes:
firstly, according to the lapping system shown in figure 1, carrying out zero clearing, one output channel of a first optical splitter 3 is coupled with a plurality of input channels of a multichannel optical power meter 6 one by one and carries out optical power testing, a workstation 8 records an initial optical power value of each channel, the other output channel of the first optical splitter 3 is directly coupled with a zero clearing channel of the multichannel optical power meter 6 and records a zero clearing value of an initial state of a light source 1, then a tested device 4 is accessed according to figure 2 or figure 3, the workstation 8 acquires a real-time zero clearing value of the zero clearing channel in real time after the access and compares the real-time zero clearing value with the zero clearing value of the initial state, when the difference value of the real-time zero clearing value and the zero clearing value of the initial state exceeds a preset threshold range, the optical power of the light source 1 is determined to have obvious fluctuation, at the moment, the workstation 8 records the difference value of the real-time zero clearing value and the zero clearing value of the initial state, and the difference value is used as a calibration basis of the optical power value of the tested product 4, and the insertion loss value of each channel of the tested product is converted after calibration.
It should be particularly pointed out that, during zero clearing, the zero clearing value is usually large due to the quality of the end face of the optical fiber connector or poor butt joint, and the abnormality cannot be kept unchanged during the second repeated operation, so that the zero clearing value can generate great difference, at this time, secondary zero clearing is performed, the numerical values of the two times of zero clearing can be compared, and a certain difference range, such as ± 0.05db, is set, so that the zero clearing value of each zero clearing can not be affected due to the quality of the end face of the connector or poor butt joint, and the accuracy of the test is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. An optical passive device insertion loss detection system is characterized in that: the device comprises a light source (1), a polarization controller (2), a first optical splitter (3) and a multichannel optical power meter (7), wherein the light source (1), the polarization controller (2) and the first optical splitter (3) are sequentially coupled, one output channel of the first optical splitter (3) is coupled with an input channel of a tested device (4), a plurality of output channels of the tested device (4) are respectively coupled with a plurality of channels of the multichannel optical power meter (7) in a one-to-one correspondence manner through a first connecting assembly (5), and the other output channel of the first optical splitter (3) is directly coupled with a zero clearing channel of the multichannel optical power meter (7) through a second connecting assembly (5).
2. The optical passive device insertion loss detection system of claim 1, wherein: the connecting component (5) comprises two optical fiber connectors and a flange plate, wherein one optical fiber connector is coupled with one output channel of the tested device (4), the other optical fiber connector is coupled with the corresponding output channel of the multichannel optical power meter (7), and the two optical fiber connectors are coupled through the flange plate.
3. An optical passive device insertion loss detection system according to claim 1 or 2, characterized in that: the system also comprises a workstation (8), wherein the workstation (8) is electrically connected with the multichannel optical power meter (7).
4. The optical passive device insertion loss detection system of claim 3, wherein: the polarization controller is characterized by further comprising second optical splitters (9), the number of the first optical splitters (3), the number of the multi-channel optical power meters (7) and the number of the workstations (8) are the same as the number of output channels of the second optical splitters (9), the input channels of the second optical splitters (9) are in coupling connection with the output channels of the polarization controller (2), and a plurality of output channels of the second optical splitters (9) are respectively in one-to-one corresponding coupling with the input channels of the first optical splitters (3).
5. The optical passive device insertion loss detection system of claim 4, wherein: the system comprises a server (10), wherein the server (10) is electrically connected with all the light sources (1), the polarization controllers (2) and the workstations (8) respectively.
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| CN202122996369.0U CN216290915U (en) | 2021-11-30 | 2021-11-30 | Optical passive device insertion loss detection system |
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| CN202122996369.0U CN216290915U (en) | 2021-11-30 | 2021-11-30 | Optical passive device insertion loss detection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116683987A (en) * | 2023-08-04 | 2023-09-01 | 镭神技术（深圳）有限公司 | Method, device and system for testing modulated optical chip channel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116683987A (en) * | 2023-08-04 | 2023-09-01 | 镭神技术（深圳）有限公司 | Method, device and system for testing modulated optical chip channel |
| CN116683987B (en) * | 2023-08-04 | 2023-10-13 | 镭神技术（深圳）有限公司 | Method, device and system for testing modulated optical chip channel |
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