CN101043272A - System and method for detecting optical fiber wiring troubles - Google Patents
System and method for detecting optical fiber wiring troubles Download PDFInfo
- Publication number
- CN101043272A CN101043272A CNA2006100610366A CN200610061036A CN101043272A CN 101043272 A CN101043272 A CN 101043272A CN A2006100610366 A CNA2006100610366 A CN A2006100610366A CN 200610061036 A CN200610061036 A CN 200610061036A CN 101043272 A CN101043272 A CN 101043272A
- Authority
- CN
- China
- Prior art keywords
- light
- time
- splitter
- delay
- optical fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Optical Communication System (AREA)
Abstract
The invention relates to fields of communication, specially a detecting system and method of optical fiber line fault. The detecting system includes: local equipment, terminal equipment, at least one light delay branching units which are between the local equipment and terminal equipment, test wavelength reflect device which is connected between the light delay branching units and terminal equipment and close to the spur track fiber of the terminal equipment, and test device OTDR of main circuit fiber which is between the light delay branching units and local equipment, said light delay branching units generate different delay time for light signal of different port branching light path, thereinto the length of branching fiber of said light delay branching units and terminal equipment is the same. The detecting method and system of the fiber line fault in this invention can simplify the test method of fiber line fault diagnosis, and decrease the cost of fiber construction.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of detection method and system of optical-fiber line fault.
Background technology
As shown in Figure 1, the point of a typical optical fiber access generally includes a local side apparatus OLT, a plurality of passive optical splitter Splitter, a plurality of remote equipment ONT and multifiber to the optical-fiber network of multiple spot.Local side apparatus is connected by an optical fiber with optical branching device, forms the trunk roads of optical fiber.Optical branching device is connected with a plurality of remote equipments respectively by many branch optical fibers.
The method of existing detection fiber line fault is that (Optical Time DomainReflect meter, OTDR) technology realizes employing OTDR substantially.Promptly utilize OTDR in fibre circuit, to launch a light pulse, carry out the failure diagnosis of fibre circuit by monitoring catoptrical variation.In EPON, the fault detect of branch optical fiber mainly contains two kinds of detection modes at present:
(1) in the fault of central office side diagnosis, test branch fibre circuit.
Launch a light pulse by testing equipment OTDR in trunk optical fiber, light pulse is admitted to each branch optical fiber at the optical branching device place.Through the reflection node of branch optical fiber, light is reflected, and each branched optical cable is mixed together through behind the optical branching device, sends into testing equipment OTDR.Because the reverberation of each branch optical fiber is mixed to together, the result, it is from that the testing equipment OTDR of local side is difficult to orient reverberation for which branch's light path, therefore being difficult to detect is that fault has appearred in which branch's light path.
(2) directly carry out the fault detect of branch optical fiber circuit by branch optical fiber.
This is a kind of detection method of direct test branch optical fiber.This detection method is simpler, can detect the fault of branch optical fiber circuit, still, the cost of the realization of this test mode is higher, cost of investment in actual applications is excessive, can't accept, and can received test mode be the failure diagnosis of carrying out branch optical fiber from local side.
The mode of the two-stage beam split of adopting at Japan's present optical fiber wiring, NTT company has proposed by the optical fiber behind the first order splitter being tested the implementation of detection branches optical-fiber line fault.This implementation requires the shunt fiber lengths difference after the splitter Splitter of the second level.As shown in Figure 2, this test macro comprises testing equipment OTDR, test access module TAM (the Test Access Module between the two-stage splitter, TAM) and the fibre selector Fiber Selector between this testing equipment OTDR and test access module TAM, fibre selector Fiber Selector connects testing equipment OTDR and test access module TAM respectively.
The cardinal principle of this technical scheme is: owing to be connected to each branch optical fiber length difference of terminal equipment, thereby under the fibre circuit normal condition, the position difference of the reflection light pulse of detected each branch's light path of testing equipment.After certain branch optical fiber fracture, variation has taken place in detected reflection light pulse position under the reflection light pulse position of the detected branch of testing equipment light path and the original normal condition, so just can judge which branch's light path and fault occur.
Because the branch optical fiber length after this test specification second level splitter is different, brought difficulty for the construction of optical fiber.
Summary of the invention
Be the detection system of the optical-fiber line fault that solves prior art and the defective of method constructional difficulties, the invention provides a kind of detection system and method for the simple optical-fiber line fault of constructing.
The technical scheme that is provided is provided in the present invention: the detection system that a kind of optical-fiber line fault is provided, this system comprises: local side apparatus, terminal equipment, at least one light time-delay splitter between local side apparatus and terminal equipment, be connected between light time-delay splitter and the terminal equipment and near the test wavelength reflection unit on the branch road optical fiber of this terminal equipment, and the testing equipment OTDR of the main line optical fiber access between light time-delay splitter and local side apparatus, described light time-delay splitter is to the light signal generating different delayed time time of different port branch light paths, and light time-delay splitter is identical with branch optical fiber length between the terminal equipment.
Preferably, described light time-delay splitter is to adopt winding mode to realize.
Preferably, described system comprises multistage optical branching device.
Preferably, described system comprises normal optical splitter and light time-delay splitter.
Preferably, the afterbody splitter of described system is a light time-delay splitter.
Preferably, described system comprises a plurality of light time-delay splitters.
Preferably, described test wavelength reflection unit is light filter plate or Bragg grating.
Preferably, described system also comprises the fibre selector between testing equipment OTDR and main line optical fiber.
Another technical scheme that is provided is provided in the present invention: a kind of detection method of optical-fiber line fault is provided, and this method comprises method, may further comprise the steps:
A. testing equipment OTDR launches light detection pulse signal in the fibre circuit of main line;
B. detect pulse signal at test wavelength reflection unit reverberation near terminal;
C. testing equipment OTDR makes comparisons reverberation detection pulse signal under reverberation detection pulse signal that receives and the normal condition that prestores, to determine abort situation.
Preferably, described light time-delay splitter is to the light signal generating different delayed time time of different port branch light paths, and step C is described relatively to be that the reverberation that will receive detects the time-domain diagram that reverberation under pulse signal and the normal condition that prestores detects pulse signal and makes comparisons.
Compared with prior art, adopt the detection method and the system of optical-fiber line fault of the present invention, by utilizing in the optical fiber construction, lay the optical branching device that isometric shunt optical fiber and employing have the light signal delay function, can simplify the method for testing of optical-fiber line fault diagnosis, reduce the difficulty of optical fiber construction.
Description of drawings
Fig. 1 is the optical-fiber network networking structure schematic diagram of a kind of point of prior art to multiple spot.
Fig. 2 is the schematic diagram of a kind of NTT Test Application system.
Fig. 3 is an one-level spectrophotometric test system group network schematic diagram of the present invention.
Fig. 4 is under the fibre circuit normal condition that receives of testing equipment OTDR, the catoptrical time-domain diagram that each branch's light path produces by reflector.
Fig. 5 has shown when fiber cut failure appears in the 3 road branch optical fiber circuit of optical branching device, the detected reflectogram of testing equipment OTDR.
Fig. 6 is a secondary spectrophotometric test system group network schematic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and typical embodiment the present invention is further introduced, but not as a limitation of the invention.
In the technical scheme of the present invention, require branch optical fiber, promptly optical branching device Splitter is connected to the optical fiber of subscriber terminal equipment, and length is identical.Branch road optical fiber near terminal between optical branching device and each terminal is provided with reflective optical system, is used for the reflection measurement wavelength, and for example testing wavelength is 1650nm.Optical branching device Splitter has the function to the light signal generating different delayed time time of different port branch light path, can adopt the mode of light time-delay or light coiling to realize.Testing equipment OTDR inserts test from the main line optical fiber between local side apparatus and the optical branching device.
The implementation procedure of this fiber failure detection method is: testing equipment OTDR launches light and detects pulse signal in the fibre circuit of main line, light detects pulse signal and reflects at the reflective optical system place near terminal, the fault of branch optical fiber circuit is discerned, is judged in the difference of the reflection light pulse position that testing equipment OTDR receives by detection and the variation of branched line fault back reflection light pulse.In fact this position diverse ways that utilizes the detection of reflected light pulse is similar to identify label ID of each branch optical fiber circuit, judges the fault of branch optical fiber circuit by the variation of discerning its sign.
Below in conjunction with the example that one-level beam split networking application and trouble detects, detailed explanation realizes the concrete grammar of technical scheme of the present invention.
See also Fig. 3, the detection system of optical-fiber line fault of the present invention comprises: local side apparatus, a plurality of terminal equipment, at the time-delay of the light between local side apparatus and terminal equipment splitter, be connected between light time-delay splitter and the terminal equipment and near the test wavelength reflective optical system on the branch road optical fiber of this terminal equipment, connect by the identical shunt optical fiber of length between light time-delay splitter and each terminal equipment, testing equipment OTDR inserts the main line optical fiber that light delays time between splitter and the local side apparatus and tests.
This reflective optical system is that the wavelength of work need see through to the reflector of special wavelength light reflection, and this reflective optical system can be light filter plate, Bragg grating etc.
At first, utilize the OTDR testing equipment to test out under the fibre circuit normal condition, each branch's light path produces catoptrical time-domain diagram by reflector, and this time-domain diagram as shown in Figure 4.
Launch a light pulse signal when the OTDR testing equipment to main line optical fiber, light pulse signal passes through optical branching device, and is different to the light pulse signal time-delay of each branch's light path because optical branching device has the light delay function, thereby its time-domain position difference.The test light wave of specific wavelength makes the OTDR testing equipment when receiving reflected light signal through the reflection of branch's light path glazing reflector, can detect the diverse location of light pulse reflected signal, and this time-domain diagram as shown in Figure 4.These different light pulse reflected signals have just been represented different branches light path reflected light signal situation.This test is obtained reflected signal figure as a standard form, and when breaking down with optical fiber, test obtains the reflected signal time-domain diagram and compares, and can find out the branch optical fiber circuit that breaks down.
Fiber cut failure has appearred in the 3 road branch optical fiber circuit of supposing optical branching device, and testing equipment OTDR will detect reflectogram shown in Figure 5 so.
Compare and can find from the light reflection time domain template figure of fault light reflection time-domain diagram and standard, variation has taken place in the reflection light pulse time domain of branch's light path 3, and the light reflected impulse has taken place forward to move.And the light reflected impulse time domain of other branch's light path and standard light reflection time domain template figure contrast do not change.Therefore can judge the 3 road branch optical fiber fault occurred.
As shown in Figure 6, be the example that secondary beam split networking application and trouble detects.Its first order optical branching device adopts common optical branching device, and second level optical branching device adopts the optical branching device with delay function.Testing equipment OTDR is connected respectively on the branch optical fiber behind the one-level optical branching device via fibre selector (Fiber selector) and TAM, carries out the failure diagnosis of fibre circuit, and its method of testing is identical with the one-level beam split.
When optical-fiber network adopts multistage beam split mode, method of testing is similar to above test, but its test point position difference, in the multistage light shunt mode, testing equipment OTDR is connected respectively on the branch optical fiber behind the afterbody optical branching device via Fiber selector and optical switch, carry out the failure diagnosis of fibre circuit, its method of testing is identical with one-level beam split mode.
In multistage splitting network, also can there be a plurality of light time-delay splitters, perhaps comprise normal optical splitter and light time-delay splitter, as long as each reflective optical system reflexes to the time domain difference of the test light pulse signal of testing equipment OTDR.When existing a plurality of light to delay time splitter, this a plurality of light time-delay splitter parallel connection.The test access point of testing equipment OTDR can be arranged on first order splitter front, but requires the connection fiber lengths between first order splitter and the afterbody splitter identical.
Adopt the detection method and the system of optical-fiber line fault of the present invention, can simplify the method for testing of optical-fiber line fault diagnosis, reduced the difficulty of optical fiber construction.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (12)
1. the detection system of an optical-fiber line fault comprises local side apparatus and terminal equipment, it is characterized in that, also comprises:
At least one light time-delay splitter between local side apparatus and terminal equipment, described light time-delay splitter is to the light signal generating different delayed time time of different port branch light paths;
Be connected between light time-delay splitter and the terminal equipment and near the test wavelength reflection unit on the branch road optical fiber of this terminal equipment; And
The testing equipment OTDR that main line optical fiber between light time-delay splitter and local side apparatus inserts;
Light time-delay splitter is identical with branch optical fiber length between the terminal equipment.
2. detection system according to claim 1 is characterized in that, described light time-delay splitter is to adopt winding mode to realize.
3 detection systems according to claim 1 is characterized in that described system comprises multistage optical branching device.
4. detection system according to claim 3 is characterized in that, described system comprises normal optical splitter and light time-delay splitter.
5. detection system according to claim 3 is characterized in that, the afterbody splitter of described system is a light time-delay splitter.
6. detection system according to claim 1 is characterized in that, described system comprises a plurality of light time-delay splitters.
7. detection system according to claim 1 is characterized in that, described test wavelength reflection unit is light filter plate or Bragg grating.
8. detection system according to claim 1 is characterized in that, described system also comprises the fibre selector between testing equipment OTDR and main line optical fiber.
9. the method for a detection fiber line fault is characterized in that, may further comprise the steps:
A. testing equipment OTDR launches light detection pulse signal in the fibre circuit of main line;
B. light time-delay splitter detects pulse signal to the light that enters different port branch light paths and produces the different delayed time time;
C. the light in each test wavelength reflection unit reflection respective branch detects pulse signal;
D. testing equipment OTDR makes comparisons reverberation detection pulse signal under reverberation detection pulse signal that receives and the normal condition that prestores, to determine abort situation.
10. method according to claim 9 is characterized in that, step D is described relatively be will receive reverberation detect the time-domain diagram that reverberation under pulse signal and the normal condition that prestores detects pulse signal and make comparisons.
11. method according to claim 9 is characterized in that, described light time-delay splitter is to adopt winding mode to realize.
12. method according to claim 9 is characterized in that, described test wavelength reflection unit is light filter plate or Bragg grating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100610366A CN101043272A (en) | 2006-06-08 | 2006-06-08 | System and method for detecting optical fiber wiring troubles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100610366A CN101043272A (en) | 2006-06-08 | 2006-06-08 | System and method for detecting optical fiber wiring troubles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101043272A true CN101043272A (en) | 2007-09-26 |
Family
ID=38808521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100610366A Pending CN101043272A (en) | 2006-06-08 | 2006-06-08 | System and method for detecting optical fiber wiring troubles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101043272A (en) |
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101924590A (en) * | 2010-08-25 | 2010-12-22 | 中兴通讯股份有限公司 | Detection system and method of fiber fault of passive optical network |
| CN101984561A (en) * | 2010-11-15 | 2011-03-09 | 中兴通讯股份有限公司 | System and method for detecting optical fiber faults of passive optical network |
| CN102088315A (en) * | 2011-03-18 | 2011-06-08 | 北京锐锋钝石科技有限公司 | Optical fiber failure positioning system and method |
| CN102104421A (en) * | 2009-12-16 | 2011-06-22 | 华为技术有限公司 | Branched optical fiber failure detection method and device for optical network, and optical network |
| CN102111686A (en) * | 2009-12-25 | 2011-06-29 | 华为技术有限公司 | Method, device and system for detecting faults of branch optical fibers |
| CN102204127A (en) * | 2011-05-11 | 2011-09-28 | 华为技术有限公司 | Method, apparatus and system for detecting type of network equipment |
| CN102208941A (en) * | 2010-03-30 | 2011-10-05 | 华为技术有限公司 | Fiber failure detection system, method, optical switch and passive optical network system |
| WO2011140953A1 (en) * | 2010-05-13 | 2011-11-17 | 华为技术有限公司 | Detection method, system and device for point to multi-point fiber network |
| WO2012024871A1 (en) * | 2010-08-23 | 2012-03-01 | 中兴通讯股份有限公司 | Method and optical line terminal for optical fiber fault diagnosis in passive optical network |
| CN101650454B (en) * | 2008-08-12 | 2012-06-27 | 华为技术有限公司 | Optical divider equipment and method for acquiring optical fiber connection state |
| CN101488805B (en) * | 2008-01-15 | 2012-08-29 | 电子科技大学 | Optical fiber disturbance detection method and apparatus |
| CN102882744A (en) * | 2012-09-26 | 2013-01-16 | 邱天 | Bus communication system and fault detection method therefor |
| WO2012126403A3 (en) * | 2012-02-21 | 2013-01-24 | 华为技术有限公司 | Optical transceiving module, passive optical network system, optical fibre detection method and system |
| CN101836381B (en) * | 2007-10-26 | 2013-05-29 | 诺基亚西门子通信公司 | Method to diagnose an optical communication network |
| CN103222206A (en) * | 2012-10-31 | 2013-07-24 | 华为技术有限公司 | Fault detection method, apparatus and system of branch fiber |
| CN103338069A (en) * | 2013-06-09 | 2013-10-02 | 华为技术有限公司 | Method, equipment and device for measuring branch optical fibers |
| WO2014036959A1 (en) * | 2012-09-05 | 2014-03-13 | 华为技术有限公司 | Apparatus and method for optical splitter port recognition, and method and apparatus for optical splitter temperature detection |
| CN103840877A (en) * | 2012-11-23 | 2014-06-04 | 中兴通讯股份有限公司 | Time synchronization device and method for automatically detecting optical fiber asymmetry |
| WO2015024259A1 (en) * | 2013-08-23 | 2015-02-26 | 华为技术有限公司 | Optical network monitoring apparatus, optical communications system, and optical network monitoring method |
| CN105530046A (en) * | 2014-09-30 | 2016-04-27 | 中国电信股份有限公司 | Method and system for realizing automatic tests on light power and branch attenuation faults |
| CN106197946A (en) * | 2016-06-29 | 2016-12-07 | 富通光纤光缆（深圳）有限公司 | A kind of method of fiber laser arrays, equipment and system |
| CN106788694A (en) * | 2010-05-27 | 2017-05-31 | 爱斯福公司 | Many collection OTDR method and devices |
| CN108476081A (en) * | 2015-10-30 | 2018-08-31 | 瑞典爱立信有限公司 | Protective device for bi-directional optical |
| CN108683452A (en) * | 2018-08-22 | 2018-10-19 | 惠安科培工业设计有限公司 | Fiber optic network fault detection system |
| CN109818671A (en) * | 2017-11-22 | 2019-05-28 | 全球能源互联网研究院有限公司 | A kind of control method and system for intelligent light with measurement |
| CN109870627A (en) * | 2017-12-05 | 2019-06-11 | 华北电力大学（保定） | Submarine cable fault alarm and diagnostic method based on distributed fiber optic temperature strain and vibration monitoring data |
| CN112039583A (en) * | 2019-06-04 | 2020-12-04 | 上海欣诺通信技术股份有限公司 | Aggregation remote local side, remote side equipment and optical fiber network system |
| CN112491465A (en) * | 2019-08-23 | 2021-03-12 | 中兴通讯股份有限公司 | Optical fiber line detection control method, device, equipment and readable storage medium |
| CN114679217A (en) * | 2022-02-09 | 2022-06-28 | 锐捷网络股份有限公司 | Optical link abnormity detection method, device and storage medium |
-
2006
- 2006-06-08 CN CNA2006100610366A patent/CN101043272A/en active Pending
Cited By (52)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8532483B2 (en) | 2007-10-26 | 2013-09-10 | Adtran GmbH | Method to diagnose an optical communication network |
| CN101836381B (en) * | 2007-10-26 | 2013-05-29 | 诺基亚西门子通信公司 | Method to diagnose an optical communication network |
| CN101488805B (en) * | 2008-01-15 | 2012-08-29 | 电子科技大学 | Optical fiber disturbance detection method and apparatus |
| CN101650454B (en) * | 2008-08-12 | 2012-06-27 | 华为技术有限公司 | Optical divider equipment and method for acquiring optical fiber connection state |
| CN102104421B (en) * | 2009-12-16 | 2015-03-25 | 华为技术有限公司 | Branched optical fiber failure detection method and device for optical network, and optical network |
| CN102104421A (en) * | 2009-12-16 | 2011-06-22 | 华为技术有限公司 | Branched optical fiber failure detection method and device for optical network, and optical network |
| CN102111686B (en) * | 2009-12-25 | 2014-01-01 | 华为技术有限公司 | Method, device and system for detecting faults of branch optical fibers |
| CN102111686A (en) * | 2009-12-25 | 2011-06-29 | 华为技术有限公司 | Method, device and system for detecting faults of branch optical fibers |
| CN102208941B (en) * | 2010-03-30 | 2014-01-08 | 华为技术有限公司 | Fiber failure detection system, method, optical switch and passive optical network system |
| CN102208941A (en) * | 2010-03-30 | 2011-10-05 | 华为技术有限公司 | Fiber failure detection system, method, optical switch and passive optical network system |
| WO2011120372A1 (en) * | 2010-03-30 | 2011-10-06 | 华为技术有限公司 | System and method for detecting fiber fault, optical switch and passive optical network system |
| WO2011140953A1 (en) * | 2010-05-13 | 2011-11-17 | 华为技术有限公司 | Detection method, system and device for point to multi-point fiber network |
| CN106788694A (en) * | 2010-05-27 | 2017-05-31 | 爱斯福公司 | Many collection OTDR method and devices |
| WO2012024871A1 (en) * | 2010-08-23 | 2012-03-01 | 中兴通讯股份有限公司 | Method and optical line terminal for optical fiber fault diagnosis in passive optical network |
| CN101924590B (en) * | 2010-08-25 | 2016-04-13 | 中兴通讯股份有限公司 | The detection system of fiber fault of passive optical network and method |
| CN101924590A (en) * | 2010-08-25 | 2010-12-22 | 中兴通讯股份有限公司 | Detection system and method of fiber fault of passive optical network |
| CN101984561A (en) * | 2010-11-15 | 2011-03-09 | 中兴通讯股份有限公司 | System and method for detecting optical fiber faults of passive optical network |
| CN101984561B (en) * | 2010-11-15 | 2014-09-10 | 中兴通讯股份有限公司 | System and method for detecting optical fiber faults of passive optical network |
| WO2012065459A1 (en) * | 2010-11-15 | 2012-05-24 | 中兴通讯股份有限公司 | System and method for testing fibre failure in passive optical network |
| CN102088315A (en) * | 2011-03-18 | 2011-06-08 | 北京锐锋钝石科技有限公司 | Optical fiber failure positioning system and method |
| CN102088315B (en) * | 2011-03-18 | 2014-07-23 | 北京锐锋钝石科技有限公司 | Optical fiber failure positioning system and method |
| CN102204127A (en) * | 2011-05-11 | 2011-09-28 | 华为技术有限公司 | Method, apparatus and system for detecting type of network equipment |
| WO2011124169A3 (en) * | 2011-05-11 | 2012-04-12 | 华为技术有限公司 | Method, apparatus and system for detecting type of network equipment |
| CN102204127B (en) * | 2011-05-11 | 2014-03-26 | 华为技术有限公司 | Method, apparatus and system for detecting type of network equipment |
| WO2011124169A2 (en) * | 2011-05-11 | 2011-10-13 | 华为技术有限公司 | Method, apparatus and system for detecting type of network equipment |
| WO2012126403A3 (en) * | 2012-02-21 | 2013-01-24 | 华为技术有限公司 | Optical transceiving module, passive optical network system, optical fibre detection method and system |
| WO2014036959A1 (en) * | 2012-09-05 | 2014-03-13 | 华为技术有限公司 | Apparatus and method for optical splitter port recognition, and method and apparatus for optical splitter temperature detection |
| CN102882744A (en) * | 2012-09-26 | 2013-01-16 | 邱天 | Bus communication system and fault detection method therefor |
| CN102882744B (en) * | 2012-09-26 | 2016-05-11 | 邱天 | Bus communication system and this system realize the method for fault detect |
| WO2014067094A1 (en) * | 2012-10-31 | 2014-05-08 | 华为技术有限公司 | Branch optical fiber fault detection method, device and system |
| CN103222206B (en) * | 2012-10-31 | 2016-11-02 | 华为技术有限公司 | The fault detection method of branch optical fiber, Apparatus and system |
| CN103222206A (en) * | 2012-10-31 | 2013-07-24 | 华为技术有限公司 | Fault detection method, apparatus and system of branch fiber |
| CN103840877A (en) * | 2012-11-23 | 2014-06-04 | 中兴通讯股份有限公司 | Time synchronization device and method for automatically detecting optical fiber asymmetry |
| CN103840877B (en) * | 2012-11-23 | 2017-11-24 | 中兴通讯股份有限公司 | The time synchronism apparatus and method of automatic detection optical fiber asymmetric |
| CN103338069B (en) * | 2013-06-09 | 2015-12-02 | 华为技术有限公司 | The method of detection branches optical fiber, device and equipment |
| CN103338069A (en) * | 2013-06-09 | 2013-10-02 | 华为技术有限公司 | Method, equipment and device for measuring branch optical fibers |
| WO2015024259A1 (en) * | 2013-08-23 | 2015-02-26 | 华为技术有限公司 | Optical network monitoring apparatus, optical communications system, and optical network monitoring method |
| CN105530046B (en) * | 2014-09-30 | 2018-06-12 | 中国电信股份有限公司 | Realize the method and system that luminous power and branch off attenuation failure are tested automatically |
| CN105530046A (en) * | 2014-09-30 | 2016-04-27 | 中国电信股份有限公司 | Method and system for realizing automatic tests on light power and branch attenuation faults |
| CN108476081A (en) * | 2015-10-30 | 2018-08-31 | 瑞典爱立信有限公司 | Protective device for bi-directional optical |
| US10491293B2 (en) | 2015-10-30 | 2019-11-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Protection apparatus for a bidirection optical link |
| CN108476081B (en) * | 2015-10-30 | 2020-07-07 | 瑞典爱立信有限公司 | Protection device for bidirectional optical link |
| CN106197946A (en) * | 2016-06-29 | 2016-12-07 | 富通光纤光缆（深圳）有限公司 | A kind of method of fiber laser arrays, equipment and system |
| CN106197946B (en) * | 2016-06-29 | 2018-11-23 | 富通光纤光缆（深圳）有限公司 | A kind of method of fiber laser arrays, equipment and system |
| CN109818671A (en) * | 2017-11-22 | 2019-05-28 | 全球能源互联网研究院有限公司 | A kind of control method and system for intelligent light with measurement |
| CN109818671B (en) * | 2017-11-22 | 2021-08-06 | 全球能源互联网研究院有限公司 | Control method and system for intelligent optical metrology |
| CN109870627A (en) * | 2017-12-05 | 2019-06-11 | 华北电力大学（保定） | Submarine cable fault alarm and diagnostic method based on distributed fiber optic temperature strain and vibration monitoring data |
| CN109870627B (en) * | 2017-12-05 | 2021-06-18 | 华北电力大学（保定） | Submarine cable fault alarming and diagnosing method based on distributed optical fiber temperature strain and vibration monitoring data |
| CN108683452A (en) * | 2018-08-22 | 2018-10-19 | 惠安科培工业设计有限公司 | Fiber optic network fault detection system |
| CN112039583A (en) * | 2019-06-04 | 2020-12-04 | 上海欣诺通信技术股份有限公司 | Aggregation remote local side, remote side equipment and optical fiber network system |
| CN112491465A (en) * | 2019-08-23 | 2021-03-12 | 中兴通讯股份有限公司 | Optical fiber line detection control method, device, equipment and readable storage medium |
| CN114679217A (en) * | 2022-02-09 | 2022-06-28 | 锐捷网络股份有限公司 | Optical link abnormity detection method, device and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101043272A (en) | System and method for detecting optical fiber wiring troubles | |
| US9544049B2 (en) | Fibre network comprising sensors | |
| CN102187603B (en) | Method and apparatus for deriving parameters of optical paths in optical networks using a two-wavelength otdr and a wavelength-dependent reflective element | |
| US20060029390A1 (en) | Optical distribution network monitoring method and system | |
| US20060110161A1 (en) | Method and apparatus for monitoring optical fibers of passive optical network system | |
| US7956992B2 (en) | Optical cable testing | |
| EP2425556B1 (en) | Method and apparatus for fault discovery in a passive optical network (pon) | |
| US8482725B2 (en) | Method and apparatus for identification of multiple fibers using an OTDR | |
| US5936719A (en) | Test unit and method for simultaneous testing of multiple optical fibers | |
| CN102104423A (en) | Fault detection method and system for multi-branch PON (Passive Optical Network) | |
| CN1794613A (en) | Passive optical network monitoring method and passive optical network | |
| US20070077067A1 (en) | Remote management of central office operations | |
| CN102790644B (en) | Optical fiber detection system, optical fiber detection device and method thereof | |
| GB2261506A (en) | Testing optical fibres used in communications | |
| KR20040020815A (en) | System for testing an optical network using optical time-domain reflectometry(OTDR) | |
| CN102035599A (en) | FTTH passive optical link monitoring system and method | |
| CN101442691A (en) | Optical cable monitoring system based on passive optical network system | |
| CN1855775A (en) | Device and method for monitoring optical fiber network | |
| US20070036542A1 (en) | Method for recognizing the integrity of an optical access line, optical system, tree-shaped access network, measuring unit, reflector and optical transmit and receive unit | |
| US7167236B2 (en) | Method for automatic testing of optical fibres in multibranch networks | |
| US8014670B2 (en) | Method and apparatus for testing and monitoring data communications in the presence of a coupler in an optical communications network | |
| CN1536790A (en) | Optical cable line real-time monitoring system and its method | |
| JP2009063377A (en) | Optical line test system and optical line test method | |
| JP3660043B2 (en) | Optical line monitoring method and monitoring system | |
| CN104348554A (en) | Access apparatus of optical communication network operation equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20070926 |