CN204967821U - Optical fiber link monitoring system - Google Patents
Optical fiber link monitoring system Download PDFInfo
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- CN204967821U CN204967821U CN201520763922.8U CN201520763922U CN204967821U CN 204967821 U CN204967821 U CN 204967821U CN 201520763922 U CN201520763922 U CN 201520763922U CN 204967821 U CN204967821 U CN 204967821U
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Abstract
The utility model discloses an optical fiber link monitoring system relates to light communication technology field. This monitoring system includes OTDR and light switchgear, wavelength devision multiplex equipment and network management server. Wherein, OTDR and light switchgear is embedded has OTDR unit, optical switch unit and a network management interface unit, OTDR unit be including being used for inserting a OTDR module of test and the 2nd OTDR module that is used for the transmission test, and a OTDR module, the 2nd OTDR module and optical switch unit are the drawer and insert and dial the formula structure, the output unit that wavelength devision multiplex equipment includes input unit and is arranged in being connected with remote access / transmission equipment of optical fiber link, input unit is including being arranged in the professional wavelength input port who is connected with optical fiber link's local side access / transmission equipment and testing wavelength input port with OTDR unit assorted. The utility model discloses not only use cost is low, monitor effect is good, and it is nimble to use the scene moreover.
Description
Technical field
The utility model relates to technical field of photo communication, is specifically a kind of optical fiber link monitoring system.
Background technology
Due to optical fiber communication have capacity large, transmit that information quality is high, the advantage such as long transmission distance, stable performance, anti-electromagnetic interference, resistance to corrosion are strong, thus obtain the favor of people.Particularly in nearly ten years, along with people's improving constantly broadband services demand, optical fiber communication obtains to be greatly developed.But meanwhile, the maintenance and management problem of optical fiber or optical cable is also outstanding day by day.
Along with number of fibers increase and lay the aging of optical fiber in early days, the failure condition of optical fiber link is in continuous increase.The trouble shoot difficulty of traditional optical fiber link maintenance management pattern, the troubleshooting time is long, and affect the normal work of communication network, the economic loss caused because of communications optical cable fault is every year huge.Therefore, implement the supervising and management in real time to optical fiber link, dynamically observe the deterioration condition of fibre circuit transmission performance, Timeliness coverage and forecast optical fiber hidden danger, to reduce the incidence that optical fiber blocks, the fault of shortening optical fiber is lasted and is seemed most important.
Current optical fiber link monitoring system comprises OTDR (OpticalTimeDomainReflector, optical time domain reflectometer) parts such as module, optical switch module, the light that whole system mainly utilizes OTDR module to send, optical fiber link is propagated, carrys out the break-make situation of measuring fiber link.But in use finding, still there is following shortcoming in existing optical fiber link monitoring system:
(1) existing OTDR module and the equal entirety of optical switch module are fixedly installed in exterior case, and fixing OTDR module, optical switch module all cannot be changed flexibly, once module damage maybe cannot be suitable for, then need to change whole product, make cost very high; In addition, because the shunt of often kind of optical switch module is than being certain, and hard-wired optical switch module cannot be changed flexibly, and make the shunt that is configured to more non-adjustable than fixing, cause the optical fiber link limited amount of monitoring, monitoring effect is not good;
(2) existing OTDR module is only provided with one usually, and fixed installation cannot be changed, and make monitoring system can only launch a kind of light of wavelength, only can monitor a kind of network, cannot be applied in heterogeneous networks, application scenarios is limited;
(3) existing monitoring system or not having WDM can only be used for off-line monitoring, or the port number unreasonable allocation of the WDM had, only can mate the OTDR module of launching Single wavelength, make application scenarios limited equally.
Utility model content
For the defect existed in prior art, the purpose of this utility model is to provide a kind of optical fiber link monitoring system, and not only use cost is low, monitoring effect good, and application scenarios is flexible.
For reaching above object, the technical scheme that the utility model is taked is: a kind of optical fiber link monitoring system, comprise optical time domain reflectometer OTDR and optical switching device, WDM and NM server, OTDR and optical switching device are connected with WDM, NM server respectively; Wherein, described OTDR and optical switching device comprise casing, and casing is embedded with OTDR unit, optical switch element and network management interface unit, and OTDR unit and optical switch element are by Fiber connection, and network management interface unit is electrically connected with NM server; OTDR unit comprises the OTDR module for accessing test and the 2nd OTDR module for test transmission, and an OTDR module, the 2nd OTDR module and optical switch element are drawer pulling and inserting type structure; Described WDM comprises input unit and the output unit for being connected with the distance connection/transmission equipment in optical fiber link, and input unit comprises for accessing with the local side in optical fiber link/service wavelength input port that transmission equipment is connected and the test wavelength input port that matches with described OTDR unit.
On the basis of technique scheme, the two lateral walls of a described OTDR module, the two lateral walls of the 2nd OTDR module, the two lateral walls of optical switch element are provided with slide rail, the inside part corresponding to each slide rail of described casing is provided with slide block, one OTDR module, the 2nd OTDR module and optical switch element are all inserted or pull-out casing by slide rail, slide block, thus form drawer plug-in structure.
On the basis of technique scheme, a described OTDR module provides wavelength to be the monitoring light signal of 1625nm or 1650nm; Described 2nd OTDR module provides wavelength to be the monitoring light signal of 1550nm.
On the basis of technique scheme, described optical switch element is 16 road optical switches or 32 road optical switches.
On the basis of technique scheme, described OTDR and optical switching device also comprise the power subsystem for powering.
On the basis of technique scheme, described power subsystem receives outside 220V AC power or-48V DC power supply.
On the basis of technique scheme, described NM server adopts the mode of graphical interfaces to show.
The beneficial effects of the utility model are:
1, in the utility model, OTDR unit and optical switch element are drawer pulling and inserting type structure.Drawer pulling and inserting type structural design makes OTDR unit and optical switch element all can change neatly according to demand, not only to solve in prior art once component wear maybe cannot be suitable for, then needs to change whole product, the problem that use cost is higher; And, can change as required different along separate routes than optical switch element, make the shunt of system more adjustable than flexibly, overcome a limited number of difficult problem of the optical fiber link of monitoring in prior art, and then make monitoring effect better.
2, in the utility model, OTDR unit comprises the OTDR module for accessing test and the 2nd OTDR module for test transmission, one OTDR module provides wavelength to be the monitoring light signal of 1625nm or 1650nm, 2nd OTDR module provides wavelength to be the monitoring light signal of 1550nm, make monitoring system can monitor two kinds of networks, thus meet the use of different application scene.And, corresponding with it, the utility model also improves existing WDM, make the test wavelength input port of input unit can receive the sensed light signal of the different wave length that OTDR unit sends, the port of WDM can be matched with OTDR unit, and then meet the requirement of many application scenarioss.
3, the utility model not only can realize the on-line monitoring of optical fiber link, and when do not use WDM and not access communications equipment, the off-line monitoring of optical fiber link can also be realized, applied widely.
Accompanying drawing explanation
Fig. 1 be in the utility model embodiment optical fiber link Application of Monitoring System in the schematic diagram of on-line monitoring scene;
Fig. 2 is the structural representation of OTDR and optical switching device in the utility model embodiment;
Fig. 3 is the structural representation of WDM in the utility model embodiment;
Fig. 4 be in the utility model embodiment optical fiber link Application of Monitoring System in the schematic diagram of off-line monitoring scene.
Reference numeral:
1-NM server;
2-OTDR and optical switching device; 21-OTDR unit, 21a-the one OTDR module, 21b-the 2nd OTDR module; 22-optical switch element; 23-network management interface unit; 24-power subsystem; 25-slide rail;
3-WDM; 31-input unit; 32-output unit;
4-local side access/transmission equipment; 5-reflector; 6-distance connection/transmission equipment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Shown in Figure 1, the utility model embodiment provides a kind of optical fiber link monitoring system, comprises optical time domain reflectometer OTDR and optical switching device 2, WDM 3 and NM server 1; OTDR and optical switching device 2 are connected with WDM 3, NM server 1 respectively.
Shown in Figure 2, OTDR and optical switching device 2 comprise casing, casing internal be provided with for provide the OTDR unit 21 of monitoring light signal, for monitoring light signal is converted to the multipath light signal of time-sharing multiplex optical switch element 22, be used for the network management interface unit 23 that is connected with NM server 1 and be used for the power subsystem 24 of powering, OTDR unit 21 is connected with optical switch element 22, network management interface unit 23 is connected with NM server 1, and power subsystem 24 is connected with OTDR unit 21, optical switch element 22 respectively.
Wherein, OTDR unit 21 comprises the OTDR module 21a for accessing test and the 2nd OTDR module 21b for test transmission, one OTDR module 21a provides wavelength to be the monitoring light signal of 1625nm or 1650nm, 2nd OTDR module 21b provides wavelength to be the monitoring light signal of 1550nm, thus meets the use of different application scene.
Meanwhile, a described OTDR module 21a, the 2nd OTDR module 21b and optical switch element 22 are drawer pulling and inserting type structure, namely the two side of an OTDR module 21a, the two side of the 2nd OTDR module 21b, the two side of optical switch element 22 are provided with slide rail 25, the inside of described casing is provided with slide block (not shown) with the corresponding part of each slide rail 25, and an OTDR module 21a, the 2nd OTDR module 21b and optical switch element 22 are all inserted or pull-out casing by slide rail 25, slide block.Drawer pulling and inserting type structural design makes an OTDR module 21a, the 2nd OTDR module 21b and optical switch element 22 all can change neatly according to demand, module damage not only solves in prior art once maybe cannot be suitable for, then need to change whole product, make the problem that cost is higher; And, can change as required different along separate routes than optical switch element 22, make the shunt of system more adjustable than flexibly, overcome a limited number of difficult problem of the optical fiber link of monitoring in prior art, and then make monitoring effect better.
Shown in Figure 3, WDM 3 comprises input unit 31 and output unit 32.The test wavelength input port that input unit 31 comprises service wavelength input port and matches with described OTDR unit 21, be used separately as the input of service wavelength and different test wavelength in optical fiber link monitoring system, wherein, service wavelength input port accesses with the local side in optical fiber link/and transmission equipment 4 is connected, and test wavelength input port connects from OTDR unit 21 (test wavelength input port can receive the monitoring light signal of the different wave length sent under different application scenarioss by OTDR unit 21).Output unit 32 is connected with the distance connection/transmission equipment 6 in optical fiber link by access/transmission network, for export multiplexing after lightwave signal, and in the direction that optical fiber link is contrary, light signal is demultiplexing as business light signal and test light signal.Preferably, between WDM 3 and distance connection/transmission equipment 6 (i.e. the front end of distance connection/transmission equipment 6), be provided with at least one reflector 5, the reflection to test waves signal can be strengthened.
In the present embodiment, optical switch element 22 is 16 road optical switches or 32 road optical switches, can be configured to the shunt ratio of 1:16 or the shunt ratio of 1:32; Power subsystem 24 can receive outside 220V AC power or-48V DC power supply; NM server 1 shows the connection of optical fiber link by the mode of graphical interfaces, thus positioning optical waveguides link failure.
Shown in Figure 1, in Access Network mode, the operating procedure realizing on-line monitoring to this optical fiber link monitoring system is described in detail that (transmission network mode is similar, do not repeat herein): OTDR and optical switching device 2 are connected to the test wavelength input port in the input unit 31 of WDM 3, and local side access device is connected to the service wavelength input port in the input unit 31 of WDM 3; Two kinds of lightwave signals carry out conjunction ripple through WDM 3, export from the output unit 32 of WDM 3.Close the lightwave signal after ripple after access network transmits, arrive remote access device further, lightwave signal is reflected back toward on optical fiber link in remote access device.Reflected by the light pulse of test waves, can be reflected on OTDR and optical switching device 2 for events such as optical fiber connector, fibercuts and connectors, the OTDR of OTDR and optical switching device 2 reflects according to light the distance that the spent time determines each event.NM server 1, by the mode of graphical interfaces, reflects the situation of link intuitively, thus positioning optical waveguides link failure.
Shown in Figure 4, utilize this optical fiber link monitoring system can also realize the off-line monitoring of optical fiber link.In off-line monitoring mode, without the need to using the WDM 3 in this monitoring system, do not need the participation of communication equipment (i.e. local side access/transmission equipment 4, distance connection/transmission equipment 6) simultaneously, only monitor the test waves signal that on optical fiber link, OTDR and optical switching device 2 produce.
The utility model is not only confined to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but any change is done in its shape or structure; every have identical with the utility model or akin technical scheme, all within its protection range.
Claims (7)
1. an optical fiber link monitoring system, comprise optical time domain reflectometer OTDR and optical switching device (2), WDM (3) and NM server (1), OTDR and optical switching device (2) respectively with WDM (3), NM server (1) connects, it is characterized in that: described OTDR and optical switching device (2) comprise casing, casing is embedded with OTDR unit (21), optical switch element (22) and network management interface unit (23), OTDR unit (21) and optical switch element (22) pass through Fiber connection, network management interface unit (23) is electrically connected with NM server (1), wherein, OTDR unit (21) comprises the OTDR module (21a) for accessing test and the 2nd OTDR module (21b) for test transmission, and an OTDR module (21a), the 2nd OTDR module (21b) and optical switch element (22) are drawer pulling and inserting type structure,
Described WDM (3) comprises input unit (31) and the output unit (32) for being connected with the distance connection/transmission equipment (6) in optical fiber link, and input unit (31) comprises for accessing the service wavelength input port that/transmission equipment (4) is connected and the test wavelength input port matched with described OTDR unit (21) with the local side in optical fiber link.
2. optical fiber link monitoring system as claimed in claim 1, it is characterized in that: the two lateral walls of a described OTDR module (21a), the two lateral walls of the 2nd OTDR module (21b), the two lateral walls of optical switch element (22) is provided with slide rail (25), the inside of described casing is provided with slide block with each slide rail (25) corresponding part, one OTDR module (21a), 2nd OTDR module (21b) and optical switch element (22) are all by slide rail (25), slide block inserts or pull-out casing, thus form drawer plug-in structure.
3. optical fiber link monitoring system as claimed in claim 1, is characterized in that: a described OTDR module (21a) provides wavelength to be the monitoring light signal of 1625nm or 1650nm; Described 2nd OTDR module (21b) provides wavelength to be the monitoring light signal of 1550nm.
4. optical fiber link monitoring system as claimed in claim 1, is characterized in that: described optical switch element (22) is 16 road optical switches or 32 road optical switches.
5. optical fiber link monitoring system as claimed in claim 1, is characterized in that: described OTDR and optical switching device (2) also comprise the power subsystem (24) for powering.
6. optical fiber link monitoring system as claimed in claim 5, is characterized in that: described power subsystem (24) receives outside 220V AC power or-48V DC power supply.
7. optical fiber link monitoring system as claimed in claim 1, is characterized in that: described NM server (1) adopts the mode of graphical interfaces to show.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520763922.8U CN204967821U (en) | 2015-09-29 | 2015-09-29 | Optical fiber link monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520763922.8U CN204967821U (en) | 2015-09-29 | 2015-09-29 | Optical fiber link monitoring system |
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| CN204967821U true CN204967821U (en) | 2016-01-13 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769844A (en) * | 2017-11-15 | 2018-03-06 | 国网江苏省电力公司徐州供电公司 | A kind of independent plug-in optical multiplexer and on-line monitoring system |
| CN111277324A (en) * | 2020-01-19 | 2020-06-12 | 国网山东省电力公司青岛供电公司 | Optical fiber link channel monitoring system |
| CN112866832A (en) * | 2019-11-12 | 2021-05-28 | 华为技术有限公司 | Test system, test method, test module and optical network unit ONU |
| CN116760463A (en) * | 2023-08-09 | 2023-09-15 | 中国电信股份有限公司 | Optical fiber cable monitoring method and device, storage medium and electronic equipment |
-
2015
- 2015-09-29 CN CN201520763922.8U patent/CN204967821U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107769844A (en) * | 2017-11-15 | 2018-03-06 | 国网江苏省电力公司徐州供电公司 | A kind of independent plug-in optical multiplexer and on-line monitoring system |
| CN112866832A (en) * | 2019-11-12 | 2021-05-28 | 华为技术有限公司 | Test system, test method, test module and optical network unit ONU |
| CN112866832B (en) * | 2019-11-12 | 2022-04-22 | 华为技术有限公司 | Test system, test method, test module and optical network unit ONU |
| CN111277324A (en) * | 2020-01-19 | 2020-06-12 | 国网山东省电力公司青岛供电公司 | Optical fiber link channel monitoring system |
| CN116760463A (en) * | 2023-08-09 | 2023-09-15 | 中国电信股份有限公司 | Optical fiber cable monitoring method and device, storage medium and electronic equipment |
| CN116760463B (en) * | 2023-08-09 | 2023-11-10 | 中国电信股份有限公司 | Optical fiber cable monitoring method and device, storage medium and electronic equipment |
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