CN207691811U - It is a kind of that optical transmission system is automatically configured based on OTDR - Google Patents
It is a kind of that optical transmission system is automatically configured based on OTDR Download PDFInfo
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- CN207691811U CN207691811U CN201721829902.1U CN201721829902U CN207691811U CN 207691811 U CN207691811 U CN 207691811U CN 201721829902 U CN201721829902 U CN 201721829902U CN 207691811 U CN207691811 U CN 207691811U
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- wdm
- otdr
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- optical transmission
- image intensifer
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Abstract
The utility model discloses a kind of automatically configuring optical transmission system based on OTDR.The system comprises system transmitter unit, WDM, image intensifer, system receiving unit, network management control unit and OTDR, the network management control unit controls the system transmitter unit, the image intensifer, the system receiving unit and the OTDR respectively.OTDR real time monitoring units are added in optical transmission system provided by the utility model in original optical transmission system, real time and on line monitoring can be carried out to transmission link in the case where not interrupting transmission services, and the link abnormal conditions caused by increasing for transmission link aging, link Insertion Loss, it can carry out compensation link loss by adjusting the output power of image intensifer, ensure system worked well, improves system service life.
Description
Technical field
The utility model is related to optical transport fields, more particularly to one kind being based on OTDR (OTDR：Optical Time
Domain Reflectometer) automatically configure optical transmission system.
Background technology
Fiber optic communication is since message capacity is big, transmission loss is low, electromagnetism interference is good, channel interference is small, good confidentiality
The advantages that largely used, the active demand with the development and people of information technology to high-speed data service, graphic service,
And the access of the broadband services such as high-speed Internet, video traffic, requirement of the people to fiber optic communication ability is higher and higher, right
Higher requirements are also raised for the monitoring and maintenance of optical transmission system.
In the prior art, a big chunk optical fiber telecommunications system lacks online monitoring to communication link, with making
With the increase of the time limit, communication equipment aging, telecommunication optical fiber, fibre-optical splice decaying gradually increase, some communication systems be even more due to
Transmission link is decayed, and excessive, reception power is too small so that the thresholding more than system design passes so as to cause communication quality decline
Defeated process error code is serious, influences normally to communicate.
Invention content
For the defect of existing optical transmission system, the utility model provides a kind of automatically configuring optical transport system based on OTDR
OTDR real time monitoring units are added in system, the system in original optical transmission system, can be in the case where not interrupting transmission services
Real time and on line monitoring, and the link exception feelings for caused by transmission link aging, link Insertion Loss increase are carried out to transmission link
Condition, the system can carry out compensation link loss by adjusting image intensifer output power, system receiving unit made to receive
Signal power is within range of receiving, it is ensured that system worked well.
The utility model is originally achieved by the following technical programs：
System transmitter unit connects the signal end of the first WDM, and OTDR connects the reflection end of the first WDM；
First span Transmission Fibers both ends are separately connected the common end of the first WDM and the 2nd WDM, the first image intensifer
Input, output end be separately connected the signal end of the 2nd WDM and the 3rd WDM, the 2nd WDM and the 3rd WDM
Reflection end interconnect；
Second span Transmission Fibers both ends are separately connected the common end of the 3rd WDM and the 4th WDM, the second image intensifer
Input, output end be separately connected the signal end of the 4th WDM and the 5th WDM, the 4th WDM and the 5th WDM
Reflection end interconnect；
Third span Transmission Fibers both ends are separately connected the common end of the 5th WDM and the 6th WDM, the 6th WDM
Signal end connect system receiving unit；
The network management control unit is separately connected the OTDR, the system transmitter unit, first image intensifer, institute
State the second image intensifer and the system receiving unit.
It is provided by the utility model that optical transmission system is automatically configured based on OTDR, it is added in original optical transport network
The OTDR monitors unit in real time, and the pulsed light that the OTDR is sent out passes through institute with the signal light that the system transmitter unit is sent out
It states the first WDM multiplex and enters Transmission Fibers, since the pulsed light and the signal light be not in the same wave band, cannot pass through simultaneously
Cross image intensifer, thus the pulsed light by first image intensifer, pass through described the before the second image intensifer
Two WDM, the 4th WDM are downloaded, and pass through the 3rd WDM, the again after first image intensifer, the second image intensifer
Five WDM multiplex enter the Transmission Fibers, are downloaded again at the 6th WDM before the system receiving unit and pass through reflection end
Face is reflected, and the OTDR carries out transmission link by the back scattering of the Transmission Fibers and the Fresnel reflection of reflection end face
Real time and on line monitoring.
Preferably, the OTDR has the enough dynamic ranges for covering entire Transmission system, and the OTDR passes through described
WDM2, the 2nd WDM, the 3rd WDM, the 4th WDM, the 5th WDM and the 6th WDM in the Transmission system up and down monitoring signal.
Preferably, the OTDR includes GIS geography information.It is described when fracture, damage occurs in transmission link
GIS geography information can help monitoring personnel to carry out accident analysis, and precise positioning is made to fault point, be provided for breakdown repair more straight
It connects, accurate location information.
Preferably, the reflection end of the 6th WDM connects UPC tail optical fibers, the reflection end face for OTDR monitoring links.
The OTDR exists in real time to transmission link progress by the back scattering of Transmission Fibers and the Fresnel reflection of the reflection end face
Line monitors, and finds link failure in time.
Preferably, the OTDR has fingerprint identification function, and test Transmission system initial link circuit state is as finger print information
Record preserves.When transmission link occurs abnormal, the network management control unit is extremely former in conjunction with finger print information analysis link
Cause.
Preferably, the OTDR presets link load by the network management control unit and changes thresholding, when monitoring link
After span Dissipation change is more than the pre-determined threshold, this change information is informed into the network management control unit.It is different in transmission link
Chang Shi, the network management control unit analyze link abnormal cause, it is ensured that system is just in conjunction with this change information and the finger print information
Often work improves system service life.
Preferably, the network management control unit monitors the transmission power of the system transmitter unit in real time, and described first
Image intensifer, the input of the second image intensifer, output power and the system receiving unit reception power.
Preferably, the link span Dissipation change information that the network management control unit is monitored according to the OTDR, adjustment
The output power of first image intensifer, the second image intensifer.With the aging of transmission link, link Insertion Loss increases, institute
It states network management control unit and carrys out compensation link damage by adjusting the output power of first image intensifer, the second image intensifer
Consumption, it is ensured that the signal power that the system receiving unit receives is within range of receiving.
Preferably, the supervisory signal wavelengths of the OTDR include any one in 1310nm, 1510nm or 1625nm.
Compared with prior art, the beneficial effects of the utility model are, 1) optical transmission system provided by the utility model
OTDR real-time monitoring and controls are added in original optical transmission system, pass through the back scattering of Transmission Fibers and the phenanthrene of connector ends
Nie Er is reflected carries out real time and on line monitoring to the working condition of fiber transmission link, link failure is found in time, in monitoring process
In without interrupting transmission services；2) OTDR is provided with GIS geography information, can be to link event when transmission link occurs abnormal
Barrier point carries out precise positioning, shortens emergency repair time；3) OTDR has fingerprint identification function, can be compared in real time by finger print information
To Transmission system cracking situation；4) the OTDR pulsed lights are downloaded before by the image intensifer by the WDM, in institute
It states image intensifer and enters Transmission Fibers using the WDM multiplex later, avoid the OTDR pulsed lights to Transmission Fibers
It influences；5) OTDR presets link load variation thresholding by the network management control unit, changes when monitoring link load
After pre-determined threshold, the network management control unit remotely adjusts the defeated of the image intensifer in conjunction with the OTDR finger print informations
Go out power, compensation link loss, it is ensured that system worked well improves system service life.
Description of the drawings
Fig. 1 is the schematic diagram according to the embodiment that automatically configure optical transmission system based on OTDR；
In figure：1, system transmitter unit；2, the first WDM；3, the 2nd WDM；4, the first image intensifer；5, the 3rd WDM；6,
Four WDM；7, the second image intensifer；8, the 5th WDM；9, the 6th WDM；10, system receiving unit；11, network management control unit；12、
OTDR。
Specific implementation mode
Clear, complete description is carried out to the technical solution of various embodiments of the utility model below with reference to attached drawing, it is clear that
Described hair embodiment is only a part of the embodiment of the utility model, instead of all the embodiments.It is new based on this practicality
The embodiment of type, those of ordinary skill in the art's obtained all other implementation without making creative work
Example, belongs to the range that the utility model is protected.
Below by specific embodiment and in conjunction with attached drawing, the utility model is further described in detail.
In the present embodiment, as shown in Figure 1, a kind of automatically configuring optical transmission system based on OTDR, wherein system emits
Unit 1 connects the signal end of the first WDM 2, and OTDR 12 connects the reflection end of the first WDM 2；First span Transmission Fibers
Both ends are separately connected the common end of the first WDM 2 and the 2nd WDM 3, the input, output end difference of the first image intensifer 4
Connect the signal end of the 2nd WDM 3 and the 3rd WDM 5, the reflection end of the 2nd WDM 3 and the 3rd WDM 5 are mutual
Connection；Second span Transmission Fibers both ends are separately connected the common end of the 3rd WDM 5 and the 4th WDM 6, the second light amplification
The input, output end of device 7 is separately connected the signal end of the 4th WDM 6 and the 5th WDM 8, the 4th WDM 6 and institute
The reflection end for stating the 5th WDM 8 interconnects；Third span Transmission Fibers both ends are separately connected the 5th WDM 8 and the 6th
The common end of WDM 9, the signal end connection system receiving unit 10 of the 6th WDM 9；The network management control unit 11 is distinguished
Control the OTDR 12, the system transmitter unit 1, first image intensifer 4, second image intensifer 7 and the system
System receiving unit 10.
In the present embodiment, the system transmitter unit 1 sends out signal light, and the OTDR 12 sends out pulsed light, the arteries and veins
It washes off and the first span Transmission Fibers is entered by the first WDM 2 and the photosynthetic wave signal；Due to the pulsed light
With the signal light not in the same wave band, image intensifer cannot be passed through simultaneously, so at the first span Transmission Fibers end
End, the pulsed light are downloaded by the 2nd WDM 3, and the signal light is amplified by first image intensifer 4, after amplification
The signal light and the pulsed light by the 3rd WDM 5, multiplex enters the second span Transmission Fibers again；
The second span Transmission Fibers end, the pulsed light are downloaded by the 4th WDM 6, and the signal light passes through described
Two image intensifers 7 amplify, and by the 5th WDM 8, multiplex enters institute to the amplified signal light again with the pulsed light
State third span Transmission Fibers；In the third span Transmission Fibers end, the pulsed light is downloaded by the 6th WDM 9
Into the UPC tail optical fibers for reflecting end face, the OTDR 12 passes through the back scattering of Transmission Fibers and the connector ends
Fresnel reflection monitors transmission link in real time, and monitoring information is sent to the network management control unit 11, meanwhile, institute
It states signal light and enters the system receiving unit 10.
In specific implementation, provided by the utility model that optical transmission system, the signal light are automatically configured based on OTDR
With the OTDR pulsed lights for monitoring by the WDM multiplex enter Transmission Fibers and in the Transmission Fibers together
It transmits, interfere with each other, the signal light continues through image intensifer amplification after the loss of Transmission Fibers, continues next
Span is transmitted, and is transferred to system receiving terminal always.
It is different from the prior art, the OTDR 12 tests transmission link attenuation curve when communication link is opened, and by institute
It states attenuation curve and records preservation as finger print information, while link load is preset by the network management control unit 11 and changes door
Limit is more than preset Dissipation change thresholding during being monitored in real time to transmission link when monitoring link load variation
Afterwards, the network management control unit 11 analyzes link abnormal cause in conjunction with the finger print information：If it is normal link degradations, then
First image intensifer 4 is adjusted by the network management control unit 11, the output power of second image intensifer 7 compensates
Link load, it is ensured that system is working properly；There is situations such as fracture, damage if it is transmission link, then combines GIS geography information
Precise positioning is carried out to link failure point, informs the position of link failure point described in operation maintenance personnel, the time is saved for engineering first-aid repair.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that：
It can still modify to the technical solution recorded in previous embodiment, either to which part or all technical features
Carry out equivalent replacement；And these modifications or replacements, the utility model embodiment that it does not separate the essence of the corresponding technical solution
Technical solution.
Claims (9)
1. a kind of automatically configuring optical transmission system based on OTDR, which is characterized in that
System transmitter unit connects the signal end of the first WDM, and OTDR connects the reflection end of the first WDM；
First span Transmission Fibers both ends are separately connected the common end of the first WDM and the 2nd WDM, the first image intensifer it is defeated
Enter end, output end is separately connected the signal end of the 2nd WDM and the 3rd WDM, the 2nd WDM and the 3rd WDM's is anti-
End is penetrated to interconnect；
Second span Transmission Fibers both ends are separately connected the common end of the 3rd WDM and the 4th WDM, the second image intensifer it is defeated
Enter end, output end is separately connected the signal end of the 4th WDM and the 5th WDM, the 4th WDM and the 5th WDM's is anti-
End is penetrated to interconnect；
Third span Transmission Fibers both ends are separately connected the common end of the 5th WDM and the 6th WDM, the letter of the 6th WDM
Number end connection system receiving unit；
Network management control unit is separately connected the OTDR, the system transmitter unit, first image intensifer, second light
Amplifier and the system receiving unit.
2. automatically configuring optical transmission system based on OTDR as described in claim 1, which is characterized in that the OTDR, which has, to be covered
Enough dynamic ranges of entire Transmission system are covered, the OTDR passes through the first WDM, the 2nd WDM, the 3rd WDM, the 4th
WDM, the 5th WDM and the 6th the WDM upper and lower monitoring signal in the Transmission system.
3. automatically configuring optical transmission system based on OTDR as described in claim 1, which is characterized in that the OTDR includes
GIS geography information.
4. automatically configuring optical transmission system based on OTDR as described in claim 1, which is characterized in that the 6th WDM's
Reflection end connects UPC tail optical fibers, the reflection end face for OTDR monitoring links.
5. automatically configuring optical transmission system based on OTDR as described in claim 1, which is characterized in that the OTDR, which has, to be referred to
Line identification function, test Transmission system initial link circuit state are recorded as finger print information and are preserved.
6. automatically configuring optical transmission system based on OTDR as claimed in claim 5, which is characterized in that the OTDR passes through institute
It states network management control unit and presets link load variation thresholding, be more than the pre-determined threshold when monitoring link span Dissipation change
Afterwards, this change information is informed into the network management control unit.
7. automatically configuring optical transmission system based on OTDR as described in claim 1, which is characterized in that the network management control list
Member monitors the transmission power of the system transmitter unit in real time, first image intensifer, second image intensifer input,
The reception power of output power and the system receiving unit.
8. automatically configuring optical transmission system based on OTDR as claimed in claim 6, which is characterized in that the network management control list
The link span Dissipation change information that member is monitored according to the OTDR adjusts first image intensifer, second light is put
The output power of big device.
9. automatically configuring optical transmission system based on OTDR as described in claim 1, which is characterized in that the monitoring of the OTDR
Signal wavelength is any one in 1310nm, 1510nm or 1625nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721829902.1U CN207691811U (en) | 2017-12-22 | 2017-12-22 | It is a kind of that optical transmission system is automatically configured based on OTDR |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721829902.1U CN207691811U (en) | 2017-12-22 | 2017-12-22 | It is a kind of that optical transmission system is automatically configured based on OTDR |
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| Publication Number | Publication Date |
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| CN207691811U true CN207691811U (en) | 2018-08-03 |
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| CN201721829902.1U Active CN207691811U (en) | 2017-12-22 | 2017-12-22 | It is a kind of that optical transmission system is automatically configured based on OTDR |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116760474A (en) * | 2023-07-11 | 2023-09-15 | 中声海洋装备(浙江)有限公司 | Underwater middle-long distance optical communication system and self-adaptive control method thereof |
-
2017
- 2017-12-22 CN CN201721829902.1U patent/CN207691811U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116760474A (en) * | 2023-07-11 | 2023-09-15 | 中声海洋装备(浙江)有限公司 | Underwater middle-long distance optical communication system and self-adaptive control method thereof |
| CN116760474B (en) * | 2023-07-11 | 2024-04-16 | 中声海洋装备(浙江)有限公司 | Underwater middle-long distance optical communication system and self-adaptive control method thereof |
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