CN211553249U - Optical test system for submarine optical cable - Google Patents
Optical test system for submarine optical cable Download PDFInfo
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- CN211553249U CN211553249U CN201922290742.3U CN201922290742U CN211553249U CN 211553249 U CN211553249 U CN 211553249U CN 201922290742 U CN201922290742 U CN 201922290742U CN 211553249 U CN211553249 U CN 211553249U
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Abstract
The utility model relates to a submarine optical cable optical test system belongs to optical cable test technical field. The optical fiber performance testing device comprises a first optical switch and a second optical switch, wherein the left side of the first optical switch is provided with a plurality of pairs of ports, each pair of ports are respectively used for connecting an optical fiber performance testing instrument and a corresponding testing light source, and the right side of the first optical switch is provided with a pair of ports; the left side of the second optical switch is also provided with a pair of ports which are respectively communicated with the pair of ports on the right side of the first optical switch; and the right side of the second optical switch is provided with a plurality of pairs of ports, and each pair of ports is respectively connected with two ends of the optical fiber to be detected. The utility model discloses can realize testing the switching of light path between different optic fibre capability test equipment, different photometry optic fibre, reach the purpose of accurate measurement optic fibre optical power, meet an emergency and DGD parameter.
Description
Technical Field
The utility model relates to a submarine optical cable optical test system belongs to optical cable test technical field.
Background
Tensile properties are one of the key indicators for undersea optical fiber cables. When the submarine optical cable is subjected to tensile test, the optical performance of the optical fiber in the optical cable is a key monitoring parameter, and the change condition of the performance index of the optical fiber after the submarine optical cable is subjected to tensile force in the practical application of laying, construction, maintenance, recovery and the like is reflected. The optical performance monitored during the tensile test includes an optical power change value, an optical fiber strain value, and even a Difference Group Delay (DGD) value which needs to be monitored by some customers or third parties.
The existing measurement of the optical fiber strain value on the market generally adopts a dispersion meter, and meanwhile, an integrated optical power meter can be used for testing the optical power change, the integrated functional precision cannot meet the requirement of long-time high-precision testing of the submarine optical cable, and if a special high-precision optical power meter and a DGD (differential global distribution) analyzer are adopted, the simultaneous testing on the same optical fiber loop is difficult to realize.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the not enough of above-mentioned prior art, provide a submarine optical cable optical test system, this system has realized can testing a plurality of optical fiber performance parameters in same system, can guarantee integrated functional accuracy again simultaneously.
The technical scheme of the utility model as follows:
an optical testing system for submarine optical cables is characterized by comprising a first optical switch and a second optical switch, wherein the left side of the first optical switch is provided with a plurality of pairs of ports, each pair of ports are respectively used for connecting an optical fiber performance testing instrument and a corresponding testing light source, and the right side of the first optical switch is provided with a pair of ports; the left side of the second optical switch is also provided with a pair of ports which are respectively communicated with the pair of ports on the right side of the first optical switch; and the right side of the second optical switch is provided with a plurality of pairs of ports, and each pair of ports is respectively connected with two ends of the optical fiber to be detected.
Preferably, the left side of the first optical switch is provided with three pairs of ports, the first pair of ports is respectively connected with the optical power test light source and the optical power meter, the second pair of ports is respectively connected with the strain test light source and the dispersion analyzer, and the third pair of ports is respectively connected with the DGD test light source and the DGD analyzer.
Preferably, the first optical switch and the second optical switch are respectively connected with the optical paths of the test light source, the tested optical fiber and the corresponding optical fiber performance test instrument by adopting an optical path switcher.
The utility model discloses can realize testing the switching of light path between different optic fibre capability test equipment, different photometry optic fibre, reach the purpose of accurate measurement optic fibre optical power, meet an emergency and DGD parameter.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The optical testing system for the submarine optical cable comprises a first optical switch (adopting a 1 x 3 optical switch) and a second optical switch (adopting a 1 x n optical switch), wherein three pairs of ports are arranged on the left side of the first optical switch, the first pair of ports are respectively connected with an optical power testing light source and an optical power meter, the second pair of ports are respectively connected with a strain testing light source and a dispersion analyzer, and the third pair of ports are respectively connected with a DGD testing light source and a DGD analyzer. The right side of the first optical switch is provided with a pair of ports, and the left side of the second optical switch is also provided with a pair of ports which are respectively communicated with the pair of ports on the right side of the first optical switch. And the right side of the second optical switch is provided with a plurality of pairs of ports, and each pair of ports is respectively connected with two ends of the optical fiber to be detected.
Specifically, as shown in fig. 1, after networking is performed, the ports AB of the optical switch 1 are respectively connected to the ports 1A and 1B, and the ports AB of the optical switch 1 are respectively connected to the ports 1A and 1B, so as to perform optical power test; after the optical power test is finished, switching the AB port of the optical switch 1 to 2A and 2B respectively to perform a strain test; after the strain test is finished, the AB port of the optical switch 1 is respectively switched to 3A and 3B, the DGD test is carried out, after all three optical parameters are tested, the AB port of the optical switch 2 is switched to two ends of the other optical fiber to be tested, then the three optical parameters are tested, and the steps are repeated until the test is finished.
In the embodiment, the 1 x 3 optical switch I is used for realizing the switching of the test system in three test loops of optical power test, strain test and DGD test; and the test switching of different tested optical fibers is realized through the 1 Xn optical switch II. The first optical switch and the second optical switch are respectively communicated with the optical paths of the test light source, the tested optical fiber and the corresponding optical fiber performance test instrument by adopting an optical path switcher.
Claims (3)
1. An optical testing system for submarine optical cables is characterized by comprising a first optical switch and a second optical switch, wherein the left side of the first optical switch is provided with a plurality of pairs of ports, each pair of ports are respectively used for connecting an optical fiber performance testing instrument and a corresponding testing light source, and the right side of the first optical switch is provided with a pair of ports; the left side of the second optical switch is also provided with a pair of ports which are respectively communicated with the pair of ports on the right side of the first optical switch; and the right side of the second optical switch is provided with a plurality of pairs of ports, and each pair of ports is respectively connected with two ends of the optical fiber to be detected.
2. The optical submarine cable test system according to claim 1, wherein three pairs of ports are provided on the left side of the first optical switch, the first pair of ports are respectively connected to the optical power test light source and the optical power meter, the second pair of ports are respectively connected to the strain test light source and the dispersion analyzer, and the third pair of ports are respectively connected to the DGD test light source and the DGD analyzer.
3. The optical submarine cable testing system according to claim 1 or 2, wherein the first optical switch and the second optical switch respectively use optical path switches to connect the optical paths of the testing light source, the optical fiber to be tested and the corresponding optical fiber performance testing instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922290742.3U CN211553249U (en) | 2019-12-19 | 2019-12-19 | Optical test system for submarine optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922290742.3U CN211553249U (en) | 2019-12-19 | 2019-12-19 | Optical test system for submarine optical cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211553249U true CN211553249U (en) | 2020-09-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922290742.3U Active CN211553249U (en) | 2019-12-19 | 2019-12-19 | Optical test system for submarine optical cable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211553249U (en) |
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2019
- 2019-12-19 CN CN201922290742.3U patent/CN211553249U/en active Active
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