CN117309322A - PLC optical splitter testing system and method thereof - Google Patents
PLC optical splitter testing system and method thereof Download PDFInfo
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- CN117309322A CN117309322A CN202311241385.6A CN202311241385A CN117309322A CN 117309322 A CN117309322 A CN 117309322A CN 202311241385 A CN202311241385 A CN 202311241385A CN 117309322 A CN117309322 A CN 117309322A
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- 230000003287 optical effect Effects 0.000 title claims abstract description 118
- 238000012360 testing method Methods 0.000 title claims abstract description 83
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000013307 optical fiber Substances 0.000 claims abstract description 100
- 239000000835 fiber Substances 0.000 claims abstract description 37
- 210000001503 joint Anatomy 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 6
- 238000005253 cladding Methods 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 8
- 229910010293 ceramic material Inorganic materials 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 abstract description 7
- 238000006073 displacement reaction Methods 0.000 abstract description 7
- 230000003749 cleanliness Effects 0.000 abstract description 3
- 230000004927 fusion Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000007526 fusion splicing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The invention discloses a PLC optical splitter test system and a method thereof, wherein the test system comprises a light source system, a single-core aligner, a PLC optical splitter, a multi-core aligner, a multi-channel power meter and a server, the light source system is provided with a single-mode light source line, and the tail end of the single-mode light source line is welded with a high-numerical aperture optical fiber; the input end of the single-core aligner is connected with one end of the high-numerical aperture optical fiber; the input end of the PLC optical divider is correspondingly connected with the output end of the single-core aligner; at least one input end of the multi-core aligner is correspondingly connected with at least one output end of the PLC optical splitter; the input end of the multichannel power meter is provided with a plurality of multimode optical fibers, and the input ends of the multimode optical fibers are correspondingly connected with at least one output end of the multi-core aligner one by one; the server is in communication connection with the light source system and the multichannel power meter. The test system and the method eliminate and improve the high-precision requirement of fiber core displacement during test butt joint, reduce the high requirement on the cutting angle and the cleanliness of the optical fiber, and improve the test efficiency.
Description
Technical Field
The invention relates to the technical field of optical communication, in particular to a PLC optical splitter test system and a method thereof.
Background
The PLC optical splitter, which is also called a planar waveguide optical splitter, is a passive device having a plurality of input terminals and a plurality of output terminals, and can split one or two input optical signals into two or more output optical signals, and is widely used for connecting a local side device and a terminal device in a passive optical network such as FTTX, EPON, GPON, BPON.
The optical splitter is used as a core component of the optical distribution system, the test of the optical splitter is a very important link for controlling quality, the test efficiency is also one of key factors causing high price and cost, when the conventional optical splitter test method is used for butt joint by using a single-core/multi-core aligner (or an optical fiber fusion splicer), the requirements on the cutting angle and cleanliness of optical fibers at two ends of the aligner are extremely high, the optical fibers need to be repeatedly cut and then are subjected to butt joint test, and the repeated operation greatly influences the test efficiency; and secondly, because the optical fibers of the PLC optical splitter and the optical fibers of the light source/multichannel power meter test line are of the same type, and are generally single-mode or multimode optical fibers, the displacement precision of optical fiber cores at two ends of the butt joint is required to be very high during the test, and the displacement deviation can influence the test index and the efficiency.
Disclosure of Invention
The invention provides a PLC optical divider testing system and a method thereof, which are used for solving the technical problem of low testing efficiency of a common optical divider testing system in the prior art.
To solve the above problems, a first object of the present invention is to provide a PLC optical splitter testing system, including:
the light source system is provided with a single-mode light source line at the output end, and the tail end of the single-mode light source line is welded with a high numerical aperture optical fiber;
the input end of the single-core aligner is connected with one end of the high-numerical aperture optical fiber, which is far away from the single-mode light source line;
the input end of the PLC optical divider is correspondingly connected with the output end of the single-core aligner;
the multi-core alignment instrument is characterized in that at least one input end of the multi-core alignment instrument is correspondingly connected with at least one output end of the PLC optical splitter;
the input end of the multichannel power meter is provided with a plurality of multimode optical fibers, and the input ends of the multimode optical fibers are correspondingly connected with at least one output end of the multi-core aligner one by one;
and the server is respectively in communication connection with the light source system and the multichannel power meter.
Preferably, the high numerical aperture fiber has a core size of 3.7-4.3um and a fiber cladding size of 124-126um.
Preferably, the multimode fiber has a core size of 47.5-52.5um and a cladding size of 124-126um.
Preferably, the fiber core size of the PLC optical splitter is 8-10um, and the cladding size is 124-126um.
Preferably, the single-core aligner and the multi-core aligner each comprise a base, a groove penetrating through the base, and a pressing block pressed into the groove.
Preferably, the single-core aligner has 1 groove, and the groove is used for embedding the high-numerical-aperture optical fiber and the input end of the PLC optical splitter, so as to realize connection between the high-numerical-aperture optical fiber and the PLC optical splitter.
Preferably, the multi-core aligner is provided with a plurality of grooves parallel to each other, and the grooves are used for being embedded into at least one output end of the PLC optical splitter and a plurality of input ends of the multi-channel power meter so as to realize connection between the PLC optical splitter and the multi-channel power meter, and the plurality of input ends of the multi-channel power meter are ribbon optical fibers connected with the multi-channel power meter.
Preferably, the groove is a V-shaped groove, and the input end and the output end embedded in the groove are cut and flattened bare fibers.
Preferably, the pressing block is made of ceramic material.
The second object of the present invention is to provide a testing method of the PLC optical splitter testing system, which comprises the following steps:
S 1 : welding high numerical aperture optical fibers at the output end of the single-mode light source line;
S 2 : sequentially butting and clearing the welded high numerical aperture optical fibers and the multimode optical fibers at the multichannel power meter end;
S 3 : using a single-core aligner to butt-joint the high-numerical aperture optical fiber with the input end of the PLC optical splitter;
S 4 : using a multi-core aligner to butt-joint the multimode optical fiber with the output end of the PLC optical splitter;
S 5 : and after the butt joint is finished, the server is operated, the test index of the multichannel power meter is read, and the performance index test of the PLC optical splitter is finished.
Compared with the prior art, the invention has remarkable advantages and beneficial effects, and is specifically embodied in the following aspects:
1. according to the PLC optical splitter test system provided by the invention, a part of optical fibers with fiber cores of 4um are welded at the end of a single-mode light source line to serve as light source test lines, the test lines connected with the end of a multichannel power meter are replaced by multimode optical fibers, and a single-core aligner is adopted to correspondingly connect the high-numerical-aperture optical fibers with the input ends of the PLC optical splitters, so that the butt joint of the high-numerical-aperture optical fibers and the PLC optical splitters is realized; the multi-core aligner is used for connecting at least one output end of the PLC optical splitter and a plurality of input ends of the multi-channel power meter so as to realize the butt joint of the PLC optical splitter and the multi-channel power meter, a test system circuit is from a light source fiber core 4um to a light source fiber core 9um (the fiber core size of the PLC optical splitter) to 50/62.5um, the high-precision requirement on the fiber core displacement during the test butt joint is eliminated and improved, the high requirements on the cutting angle and the cleaning of the optical fibers are reduced, and the test efficiency is improved; the improved test efficiency is improved by about 30% -50%, so that the test time is shortened, and the test efficiency is improved.
2. The invention adopts the multichannel optical power meter, and the multiple input ends of the multichannel optical power meter can be correspondingly connected with the multiple output ends of the optical divider to be tested one by one, so that the multiple output ends of the optical divider to be tested are not required to be connected with one input end of the single-channel optical power meter one by one, and an optical fiber fusion splicer is not required to be used for connecting the polarization converter with the optical divider to be tested and the multichannel optical power meter to be tested in the test process, thereby reducing the cost.
Drawings
Fig. 1 is a schematic structural diagram of a test system of a PLC optical splitter in the prior art;
fig. 2 is a schematic structural diagram of a test system of a PLC optical splitter according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of a testing method of a PLC optical splitter according to an embodiment of the present invention.
Reference numerals illustrate:
1-a light source system; 2-single core aligner; 3-PLC optical branching device; 4-multicore alignment instrument; 5-multichannel power meter; 6-a server; 7-single mode light source lines; 8-a single mode fiber test line; 9-high numerical aperture optical fiber; 10-multimode optical fiber.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
Referring to fig. 1, the test system of the conventional PLC optical splitter is shown in the following: the method mainly comprises the following steps:
firstly, sequentially performing butt joint zero clearing on a single-mode fiber light source line 7 of a light source 1 and a single-mode fiber test line 8 in a multi-channel power meter 5; using a single-core aligner 2 to butt-joint a single-mode fiber light source line 7 with the input end of the PLC optical splitter 3; the output end of the PLC optical splitter 3 is sequentially butted with a single-mode optical fiber test line 8 in the multichannel power meter 5 by using the multi-core aligner 4; after the butt joint is finished, clicking and operating a test system of the server 6, reading various test indexes of the multichannel power meter 5, and finishing the performance index test of the PLC optical splitter 3.
The above test method has the following problems:
first: when a single-core/multi-core aligner (or an optical fiber fusion splicer) is used for butt joint, the requirements on the cutting angle and cleanliness of optical fibers at two ends of the butt joint aligner are extremely high, so that the optical fibers need to be repeatedly cut and then subjected to butt joint test, and the repeated operation greatly influences the test efficiency;
second,: because the optical fibers of the PLC optical splitter and the optical fibers of the light source/multichannel power meter test line are of the same type, and are generally single-mode or multimode optical fibers, the requirements on the displacement precision of optical fiber cores of the optical fibers at two butt joint ends are very high during the test, and the butt joint displacement of the optical fibers is large, so that the test index and the efficiency are influenced.
In order to solve the above technical problems, as shown in fig. 2, an embodiment of the present invention provides a PLC optical splitter test system, which includes a light source system 1, a single-core aligner 2, a PLC optical splitter 3, a multi-core aligner 4, a multi-channel power meter 5 and a server 6, wherein:
the output end of the light source system 1 is provided with a single-mode light source line 7, and the tail end of the single-mode light source line 7 is welded with a high numerical aperture optical fiber 9.
The input end of the single-core aligner 2 is connected with one end of the high numerical aperture optical fiber 9, which is far away from the single-mode light source line 7.
The input end of the PLC optical splitter 3 is correspondingly connected with the output end of the single-core aligner 2.
At least one input end of the multi-core aligner 4 is correspondingly connected with at least one output end of the PLC optical splitter 3.
The input end of the multichannel power meter 5 is provided with a plurality of multimode optical fibers 10, and the input ends of the multimode optical fibers 10 are connected with at least one output end of the multi-core aligner 4 in a one-to-one correspondence manner.
The server 6 is in communication with the light source system 1 and the multichannel power meter 5, respectively.
Therefore, after all components in the PLC optical splitter test system are in butt joint, the server 6 can select the wavelength to be tested, the polarization related loss test time and other test parameters, after the parameter setting is completed, the PLC optical splitter 3 can be tested, and the server 6 can automatically collect and record all index parameters of the PLC optical splitter 3 in the test process to complete the test of the PLC optical splitter 3.
According to the PLC optical splitter test system provided by the embodiment, a part of optical fibers with fiber cores of 4um are welded at the end of a single-mode light source wire 7 to serve as light source test wires, the test wires connected with the end of a multichannel power meter 5 are replaced by multimode optical fibers 10, and a single-core aligner 2 is adopted to correspondingly connect the high-numerical-aperture optical fibers 9 with the input ends of the PLC optical splitters 3, so that the butt joint of the high-numerical-aperture optical fibers 9 and the PLC optical splitters 3 is realized; the multi-core aligner 4 is used for connecting at least one output end of the PLC optical splitter 3 and a plurality of input ends of the multi-channel power meter 5 so as to realize the butt joint of the PLC optical splitter 3 and the multi-channel power meter 5, the test system circuit is from a light source fiber core 4um to 9um (the fiber core size of the PLC optical splitter) to 50/62.5um, the high precision requirement on fiber core displacement during the test butt joint is eliminated and improved, the high requirement on the cutting angle and the cleaning of the optical fiber is reduced, and the test efficiency is improved; the improved test efficiency is improved by about 30% -50%.
Taking a PLC 4CH/8CH low channel as an example, the improved test efficiency is improved from 800 pcs/day to 1200 pcs/day.
In the test process, an optical fiber fusion splicer is not needed to be used for connecting the polarization converter with the optical splitter to be tested and the multichannel optical power meter, so that the cost is reduced.
In addition, since the multi-channel optical power meter 5 is adopted in the embodiment, and the multiple input ends of the multi-channel optical power meter 5 can be connected with the multiple output ends of the multi-core alignment instrument 4 in a one-to-one correspondence manner, the multiple output ends of the PLC optical splitter 3 are not required to be connected with one input end of the single-channel optical power meter one by one, so that the testing time is shortened, and the testing efficiency is improved.
Specifically, referring to FIG. 2, in the embodiment of the present invention, the high numerical aperture fiber 9 has a core size of 3.7-4.3um and a cladding size of 124-126um.
Preferably, the high numerical aperture optical fiber 9 in the embodiment of the present invention adopts a UHNA4 optical fiber, and on the one hand, the UHNA optical fiber and other high numerical aperture optical fibers (waveguides) have high coupling efficiency; on the other hand, the composition of the UHNA fiber and the core thermally expands during fusion splicing of the UHNA fiber and the ordinary transmission fiber, thereby ensuring low-loss fusion splicing of the UHNA fiber and the low-numerical-aperture transmission fiber.
Specifically, referring to FIG. 2, in an embodiment of the present invention, the multimode optical fiber 10 has a core size of 47.5-52.5um and a cladding size of 124-126um.
Also, from the standpoint of increasing the optical power entering the optical fiber, the larger the numerical aperture NA of the optical fiber is, the more advantageous for the butt joint of the optical fibers because the numerical aperture of the optical fiber is larger. However, when the numerical aperture NA of the optical fiber is too large, the mode distortion of the optical fiber increases, which affects the bandwidth of the optical fiber. Therefore, in an optical fiber communication system, there is a certain requirement for the numerical aperture of an optical fiber.
Specifically, referring to fig. 2, in the embodiment of the present invention, the fiber core size of the PLC optical splitter 3 is 8-10um, and the cladding size is 124-126um.
It can be understood that the PLC optical splitter is an integrated waveguide optical power distribution device based on a quartz substrate, and as with a coaxial cable transmission system, an optical network system also needs to couple, branch and distribute optical signals, which needs to be implemented by the optical splitter.
Specifically, referring to fig. 2, in the embodiment of the present invention, each of the single-core aligner 2 and the multi-core aligner 4 includes a base, a groove penetrating the base, and a pressing block pressed into the groove.
Specifically, referring to fig. 2, in the embodiment of the present invention, the single-core aligner 2 has 1 groove for embedding the input ends of the high-numerical-aperture optical fiber 9 and the PLC optical splitter 3 to realize connection of the high-numerical-aperture optical fiber 9 and the PLC optical splitter 3.
In this embodiment, the single-core aligner 2 includes a base, a groove, and a pressing block, and since the single-core aligner 2 is used for correspondingly connecting the high-numerical-aperture optical fiber 9 and the input end of the PLC optical splitter 3, the single-core aligner 2 has one groove to realize the butt joint of the high-numerical-aperture optical fiber 9 and the PLC optical splitter 3.
In order to realize butt joint, the input ends of the high numerical aperture optical fiber 9 and the PLC optical splitter 3 are required to be cut and leveled bare fibers, based on the cut and leveled bare fibers, before the high numerical aperture optical fiber 9 and the PLC optical splitter 3 are butted, the coating layers of the optical fibers are peeled off by wire stripper, and after the optical fibers are wiped clean by dust-free paper, the bare fibers are cut neatly by the optical fiber cutting knife and then embedded into the grooves, so that butt joint of the bare fibers is realized. In addition, the bare optical fiber in the groove is coated with the optical fiber matching liquid, so that the butt joint loss caused by the cutting angle of the bare optical fiber is reduced.
Specifically, referring to fig. 2, in the embodiment of the present invention, the multi-core aligner 4 has a plurality of grooves parallel to each other, and the grooves are used for embedding at least one output end of the PLC optical splitter 3 and a plurality of input ends of the multi-channel power meter 5 to realize connection between the PLC optical splitter 3 and the multi-channel power meter 5, and the plurality of input ends of the multi-channel power meter 5 are ribbon optical fibers connected to the multi-channel power meter 5.
In this embodiment, the multicore aligner 4 includes a base, a groove penetrating the base, and a pressing block pressed into the groove, and since the multicore aligner 4 is used for connecting at least one output end of the PLC optical splitter 3 with a plurality of input ends of the multichannel power meter 5 in a one-to-one correspondence manner, the multicore aligner 4 has a plurality of grooves parallel to each other, and the grooves are used for embedding at least one output end of the PLC optical splitter 3 and a plurality of input ends of the multichannel power meter 5, so as to realize the butt joint of the PLC optical splitter 3 and the multichannel power meter 5.
The multiple input ends of the multichannel power meter 5 are ribbon optical fibers connected with the multichannel optical power meter 5, namely, the ports of the multichannel optical power meter 5 are connected with a PC connector with one end being the ribbon optical fibers.
Specifically, referring to fig. 2, in the embodiment of the present invention, the groove is a V-shaped groove, and the input end and the output end embedded in the groove are cut and flattened bare fibers.
From this, the recess is V-arrangement recess, and the briquetting is ceramic material for prevent that the bare fiber in the embedded recess from taking place to remove at the in-process of test.
Specifically, referring to fig. 2, in the embodiment of the invention, the pressing block is made of ceramic material.
Referring to fig. 3, still another embodiment of the present invention further provides a testing method of the PLC optical splitter testing system, where the testing method specifically includes the following steps:
S 1 : welding a high numerical aperture optical fiber 9 at the output end of the single-mode light source line 7;
S 2 : sequentially butting and clearing the welded high numerical aperture optical fiber 9 and the multimode optical fiber 10 at the end of the multichannel power meter 5;
S 3 : using a single-core aligner 2 to butt-joint the high numerical aperture optical fiber 9 with the input end of the PLC optical splitter 3;
S 4 : the multimode fiber 10 is butted with the output end of the PLC optical splitter 3 by using the multi-core aligner 4;
S 5 : and after the butt joint is finished, the server 5 is operated, the test index of the multichannel power meter 5 is read, and the performance index test of the PLC optical splitter 3 is finished.
Although the present disclosure is disclosed above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the invention.
Claims (10)
1. A PLC optical splitter test system, comprising:
a light source system (1) with a single-mode light source line (7) at the output end, wherein the tail end of the single-mode light source line (7) is welded with a high numerical aperture optical fiber (9);
the input end of the single-core aligner (2) is connected with one end of the high numerical aperture optical fiber (9) far away from the single-mode light source line (7);
the input end of the PLC optical divider (3) is correspondingly connected with the output end of the single-core aligner (2);
the multi-core aligner (4), at least one input end of the multi-core aligner (4) is correspondingly connected with at least one output end of the PLC optical splitter (3);
the multi-channel power meter (5) is characterized in that the input end of the multi-channel power meter (5) is provided with a plurality of multi-mode optical fibers (10), and the input ends of the multi-mode optical fibers (10) are connected with at least one output end of the multi-core alignment instrument (4) in a one-to-one correspondence manner;
and the server (6) is respectively in communication connection with the light source system (1) and the multichannel power meter (5).
2. The PLC optical splitter test system of claim 1, wherein: the fiber core size of the high numerical aperture optical fiber (9) is 3.7-4.3um, and the fiber cladding size is 124-126um.
3. The coupling system of an optical splitter according to claim 1, wherein: the multimode optical fiber (10) has a core size of 47.5-52.5um and a fiber cladding size of 124-126um.
4. The PLC optical splitter test system of claim 2, wherein: the fiber core size of the PLC optical splitter (3) is 8-10um, and the cladding size is 124-126um.
5. The PLC optical splitter test system of claim 3, wherein: the single-core aligner (2) and the multi-core aligner (4) comprise a base, a groove penetrating through the base and a pressing block pressed into the groove.
6. The PLC optical splitter test system of claim 5, wherein: the single-core aligner (2) is provided with 1 groove, and the grooves are used for being embedded into the input ends of the high-numerical-aperture optical fiber (9) and the PLC optical splitter (3) so as to realize connection of the high-numerical-aperture optical fiber (9) and the PLC optical splitter (3).
7. The PLC optical splitter test system of claim 5, wherein: the multi-core aligner (4) is provided with a plurality of grooves which are parallel to each other, the grooves are used for being embedded into at least one output end of the PLC optical splitter (3) and a plurality of input ends of the multi-channel power meter (5) so as to realize connection of the PLC optical splitter (3) and the multi-channel power meter (5), and the plurality of input ends of the multi-channel power meter (5) are ribbon optical fibers connected with the multi-channel power meter (5).
8. The PLC optical splitter test system according to any one of claims 5 to 7, wherein: the groove is a V-shaped groove, and the input end and the output end embedded in the groove are cut and leveled bare optical fibers.
9. The PLC optical splitter test system of claim 5, wherein: the pressing block is made of ceramic materials.
10. A testing method of the PLC optical splitter testing system according to any one of claims 1 to 9, wherein: the method comprises the following steps:
S 1 : welding a high numerical aperture optical fiber (9) at the output end of the single-mode light source line (7);
S 2 : sequentially butting and clearing the welded high numerical aperture optical fiber (9) and the multimode optical fiber (10) at the end of the multichannel power meter (5);
S 3 : using a single-core aligner (2) to butt-joint the high-numerical aperture optical fiber (9) with the input end of the PLC optical splitter (3);
S 4 : the multi-core aligner (4) is used for butting the multimode optical fiber (10) with the output end of the PLC optical splitter (3);
S 5 : and after the butt joint is finished, the server (5) is operated, the test index of the multichannel power meter (5) is read, and the performance index test of the PLC optical splitter (3) is finished.
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| CN202311241385.6A CN117309322A (en) | 2023-09-22 | 2023-09-22 | PLC optical splitter testing system and method thereof |
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| CN202311241385.6A CN117309322A (en) | 2023-09-22 | 2023-09-22 | PLC optical splitter testing system and method thereof |
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