CN105577269A - Optical path detection method and device - Google Patents
Optical path detection method and device Download PDFInfo
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- CN105577269A CN105577269A CN201410555111.9A CN201410555111A CN105577269A CN 105577269 A CN105577269 A CN 105577269A CN 201410555111 A CN201410555111 A CN 201410555111A CN 105577269 A CN105577269 A CN 105577269A
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Abstract
The invention discloses an optical path detection method and device, and aims at providing the problems that optical path detection the prior art is low in accuracy and precision. The method comprises that detection optical signals of different wavelengths are received; multiple detection optical signals combinations are determined according to the received detection optical signals of different wavelengths, and each detection optical signal combination comprises one detection optical signal at least; and according to the splitting ratio set by each detection optical signal, one detection optical signal combination is sent to each optical network unit (ONU) branch in the passive optical network (PON); a backward-direction diffusion light signal back fed by each ONU branch corresponding to the detection optical signal in the received detection optical signal combination is received; and according to the received backward-direction diffusion light signal back fed by each ONU branch, each ONU branch is detected.
Description
Technical field
The present invention relates to technical field of photo communication, particularly relate to a kind of light path detection method and device.
Background technology
Optical time domain reflectometer (OpticalTimeDomainReflectometer, OTDR) is the backscattering that produces of Rayleigh scattering when utilizing light to transmit in a fiber and Fresnel reflection and the optoelectronic integration instrument of the precision made.It is widely used among the maintenance of lightguide cable link, construction, can carry out the measurement of fiber lengths, the transmission attenuation of optical fiber, joint decay and fault location etc.
In traditional passive optical-fiber network (PassiveOpticalNetwork, PON), OTDR uses the signal of specified wavelength to detect the lightguide cable link in network, and concrete system configuration as shown in Figure 1.
In the system shown in figure 1, OTDR uses wavelength to be λ
1signal carry out the detection of lightguide cable link.The power of this signal after optical splitter (Splitter), according to the splitting ratio of optical splitter, by mean allocation in each optical network unit (OpticalNetworkUnit, ONU) branch road.The backscattering light signal of each ONU branch road, after optical splitter place converges, is received in the lump by OTDR and analyzes.
Mainly there is following shortcoming in the program:
1, the signal that OTDR the uses signal that is single wavelength, to be coupled in PON in all ONU branch roads after optical splitter.When carrying out lightguide cable link and detecting, each ONU branch road feeds back back-scattering light simultaneously, and OTDR cannot distinguish the source of back-scattering light, thus testing result cannot be positioned to ONU branch road accurately.
2, the signal of OTDR use is after optical splitter, and power is by mean allocation extremely each ONU branch road.Under normal circumstances, the luminous power in each ONU branch road is only the 1/128-1/32 of trunk power.Luminous power in each ONU branch road directly affects the power of back-scattering light, causes the light path accuracy of detection of each ONU branch road lower.
Summary of the invention
The embodiment of the present invention provides a kind of light path detection method and device, in order to solve the problem that accuracy is lower and precision is poor of the light path detection existed in prior art.
The embodiment of the present invention is by the following technical solutions:
Embodiments provide a kind of light path detection method, comprising:
Receive the sensed light signal of different wave length;
According to the sensed light signal of the different wave length received, determine that multiple sensed light signal combines, wherein, in each sensed light signal combination, at least comprise a sensed light signal;
According to the splitting ratio arranged for each sensed light signal, send a sensed light signal combination to the every bar optical network unit ONU branch road in passive optical-fiber network PON;
The backscattering light signal that during the sensed light signal received with self receiving every bar ONU branch road feedback combines, the sensed light signal that comprises is corresponding;
According to the backscattering light signal of the every bar ONU branch road feedback received, realize the detection to every bar ONU branch road.
Optionally, the sensed light signal sent to the every bar ONU branch road in PON combines different; Then
According to the backscattering light signal of the every bar ONU branch road feedback received, realize, to the detection of each ONU branch road, specifically comprising:
In the backscattering light signal of the every bar ONU branch road feedback received, exist and characterize lightguide cable link when there is the backscattering light signal of fault, determine to characterize lightguide cable link and there is sensed light signal combination corresponding to the backscattering light signal of fault;
ONU branch road corresponding for the sensed light signal determined combination is defined as fault branch.
Optionally, the sensed light signal sent to the every bar ONU branch road in PON combines incomplete same; Then
According to the backscattering light signal of the every bar ONU branch road feedback received, realize, to the detection of each ONU branch road, specifically comprising:
In the backscattering light signal of the every bar ONU branch road feedback received, exist and characterize lightguide cable link when there is the backscattering light signal of fault, determine to characterize lightguide cable link and there is sensed light signal combination corresponding to the backscattering light signal of fault;
When the ONU branch road that the sensed light signal combination determined is corresponding is one, this ONU branch road is defined as fault branch;
When the ONU branch road that the sensed light signal combination determined is corresponding is at least two, from the ONU branch road that the sensed light signal determined is corresponding, determine fault branch.
Optionally, when the ONU branch road that the sensed light signal combination determined is corresponding is at least two, from the ONU branch road that the sensed light signal determined is corresponding, determines fault branch, specifically comprise:
Judge whether the difference of the physical length of the ONU branch road that the sensed light signal determined is corresponding is less than predetermined threshold value;
When judged result is for being, the backscattering light signal corresponding according to the sensed light signal combination determined, and the network analysis information obtained in advance, determine fault branch from the ONU branch road that the sensed light signal determined is corresponding;
When judged result is no, the backscattering light signal corresponding according to the sensed light signal combination determined, and the sensed light signal determined combines the reflected light signal produced based on the reflector plate in the ONU branch road of correspondence, determines fault branch from the ONU branch road that the sensed light signal determined is corresponding.
Embodiments provide a kind of light path detecting device, comprising:
Sensed light signal receiving element, for receiving the sensed light signal of different wave length;
Sensed light signal combination determining unit, for the sensed light signal according to the different wave length received, determines that multiple sensed light signal combines, and wherein, at least comprises a sensed light signal in each sensed light signal combination;
Sensed light signal combination transmitting element, for according to the splitting ratio arranged for each sensed light signal, sends a sensed light signal combination to the every bar optical network unit ONU branch road in passive optical-fiber network PON;
Back-scattering light signal receiving unit, the backscattering light signal that the sensed light signal comprised during the sensed light signal received with self for receiving every bar ONU branch road feedback combines is corresponding;
Detecting unit, for the backscattering light signal according to the every bar ONU branch road feedback received, realizes the detection to every bar ONU branch road.
Optionally, the sensed light signal that sensed light signal combination transmitting element sends to the every bar ONU branch road in PON combines different; Then
Described detecting unit, specifically for:
In the backscattering light signal of the every bar ONU branch road feedback received, exist and characterize lightguide cable link when there is the backscattering light signal of fault, determine to characterize lightguide cable link and there is sensed light signal combination corresponding to the backscattering light signal of fault; ONU branch road corresponding for the sensed light signal determined combination is defined as fault branch.
Optionally, the sensed light signal that sensed light signal combination transmitting element sends to the every bar ONU branch road in PON combines incomplete same; Then
Described detecting unit, specifically for:
In the backscattering light signal of the every bar ONU branch road feedback received, exist and characterize lightguide cable link when there is the backscattering light signal of fault, determine to characterize lightguide cable link and there is sensed light signal combination corresponding to the backscattering light signal of fault; When the ONU branch road that the sensed light signal combination determined is corresponding is one, this ONU branch road is defined as fault branch; When the ONU branch road that the sensed light signal combination determined is corresponding is at least two, from the ONU branch road that the sensed light signal determined is corresponding, determine fault branch.
Optionally, described detecting unit, specifically for:
Judge whether the difference of the physical length of the ONU branch road that the sensed light signal determined is corresponding is less than predetermined threshold value;
When judged result is for being, the backscattering light signal corresponding according to the sensed light signal combination determined, and the network analysis information obtained in advance, determine fault branch from the ONU branch road that the sensed light signal determined is corresponding;
When judged result is no, the backscattering light signal corresponding according to the sensed light signal combination determined, and the sensed light signal determined combines the reflected light signal produced based on the reflector plate in the ONU branch road of correspondence, determines fault branch from the ONU branch road that the sensed light signal determined is corresponding.
The beneficial effect of the embodiment of the present invention is as follows:
The embodiment of the present invention compared with prior art, generate the sensed light signal of multiple different wave length, again by combining the sensed light signal of different wave length, after obtaining different sensed light signal combinations, a sensed light signal combination is sent to the every bar ONU branch road in PON, wherein at least comprise a sensed light signal in sensed light signal combination, make when carrying out light path and detecting, the source of the backscattering light signal received can be identified on the one hand, thus testing result is navigated to accurately on ONU branch road, the transmitting power of each sensed light signal in the ONU branch road of correspondence can also be improved on the other hand, and then ensure that the precision that light path detects.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write specification, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a part of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is in prior art, the structural representation of light path detection;
Fig. 2 is in the embodiment of the present invention, the principle process schematic diagram of light path detection method;
Fig. 3 is in the embodiment of the present invention, in actual applications for realizing the system architecture schematic diagram of light path detection method;
Fig. 4 is in the embodiment of the present invention, the structural representation of light path detecting device.
Embodiment
In order to solve the problem that accuracy is lower and precision is poor of the light path detection existed in prior art, embodiments provide a kind of light path detection method and device.This technical scheme compared with prior art, generate the sensed light signal of multiple different wave length, again by combining the sensed light signal of different wave length, after obtaining different sensed light signal combinations, a sensed light signal combination is sent to the every bar ONU branch road in PON, wherein at least comprise a sensed light signal in sensed light signal combination, make when carrying out light path and detecting, the source of the backscattering light signal received can be identified on the one hand, thus testing result is navigated to accurately on ONU branch road, the transmitting power of each sensed light signal in the ONU branch road of correspondence can also be improved on the other hand, and then ensure that the precision that light path detects.
Below in conjunction with Figure of description, embodiments of the invention are described, should be appreciated that embodiment described herein is only for instruction and explanation of the present invention, is not limited to the present invention.And when not conflicting, the embodiment in the present invention and the feature of embodiment can be combined with each other.
Embodiments provide a kind of light path detection method, as shown in Figure 2, be the principle flow chart of the method, specifically comprise the steps:
Step 21, generates the sensed light signal of different wave length.
During concrete enforcement, the wavelength of multiple sensed light signal of generation should be non-traffic wavelength, to ensure that the wavelength of sensed light signal can be relatively independent with service wavelength.
Step 22, according to the sensed light signal of the different wave length received, determines that multiple sensed light signal combines; Wherein, a sensed light signal is at least comprised in each sensed light signal combination.
Step 23, according to the splitting ratio arranged for each sensed light signal, sends a sensed light signal combination to the every bar optical network unit ONU branch road in passive optical-fiber network PON.
Wherein, when sending sensed light signal combination to the ONU branch road in PON, only can be distributed by the principle that an ONU branch road uses according to a sensed light signal combination.But in some specific cases, the number ratio of the sensed light signal such as received is more limited, cause the quantity of the sensed light signal combination determined also more limited, so a sensed light signal combination also can be used by many ONU branch roads.
Step 24, the backscattering light signal that during the sensed light signal received with self receiving every bar ONU branch road feedback combines, the sensed light signal that comprises is corresponding.
Step 25, according to the backscattering light signal of the every bar ONU branch road feedback received, realizes the detection to every bar ONU branch road.
When the sensed light signal sent to the every bar ONU branch road in PON combines different, step 25 can be, but not limited to realize in the following manner:
In the backscattering light signal of the every bar ONU branch road feedback received, exist and characterize lightguide cable link when there is the backscattering light signal of fault, determine to characterize lightguide cable link and there is sensed light signal combination corresponding to the backscattering light signal of fault;
ONU branch road corresponding for the sensed light signal determined combination is defined as fault branch.
When the sensed light signal sent to the every bar ONU branch road in PON combines incomplete same, step 25 can be, but not limited to realize in the following manner:
In the backscattering light signal of the every bar ONU branch road feedback received, exist and characterize lightguide cable link when there is the backscattering light signal of fault, determine to characterize lightguide cable link and there is sensed light signal combination corresponding to the backscattering light signal of fault;
When the ONU branch road that the sensed light signal combination determined is corresponding is one, this ONU branch road is defined as fault branch;
When the ONU branch road that the sensed light signal combination determined is corresponding is at least two, from the ONU branch road that the sensed light signal determined is corresponding, determine fault branch.
Typically, the physical length of the ONU branch road using identical sensed light signal to combine should be not identical, so just can utilize the reflector plate added in ONU branch road, realize the fault location of lightguide cable link; If but use the physical length of the ONU branch road of identical sensed light signal combination identical or extremely close, then need the analysis tool of Help of System, such as fault occurrence log, realize the fault location of lightguide cable link.
Therefore, when the ONU branch road that the sensed light signal combination determined is corresponding is at least two, from the ONU branch road that the sensed light signal determined is corresponding, determines fault branch, can be, but not limited to realize in the following manner:
Judge whether the difference of the physical length of the ONU branch road that the sensed light signal determined is corresponding is less than predetermined threshold value;
When judged result is for being, the backscattering light signal corresponding according to the sensed light signal combination determined, and the network analysis information obtained in advance, determine fault branch from the ONU branch road that the sensed light signal determined is corresponding;
When judged result is no, the backscattering light signal corresponding according to the sensed light signal combination determined, and the sensed light signal determined combines the reflected light signal produced based on the reflector plate in the ONU branch road of correspondence, determines fault branch from the ONU branch road that the sensed light signal determined is corresponding.
Embodiment for a better understanding of the present invention, is described below in conjunction with the specific implementation process of concrete enforcement to the embodiment of the present invention.
As shown in Figure 3, in actual applications for realizing the system architecture schematic diagram of light path detection method, mainly comprise OTDR, optical splitter and PON.
Wherein, needing in OTDR to be provided with tunable laser, for generating the sensed light signal of different wave length, and sending to optical splitter; And receive the backscattering light signal of optical splitter feedback, realize light path according to backscattering light signal and detect;
And optical splitter needs to have for different sensed light signal arranges the function of splitting ratio, after the sensed light signal receiving OTDR transmission, first determine that multiple sensed light signal combines, wherein, a sensed light signal is at least comprised in each sensed light signal combination, then according to the splitting ratio arranged for each sensed light signal, a sensed light signal combination is sent to the every bar ONU branch road in PON; And receive the backscattering light signal of every bar ONU branch road feedback.And feed back to OTDR.
During concrete enforcement, the wavelength of multiple sensed light signal that OTDR utilizes tunable laser to generate should be non-traffic wavelength, to ensure that the wavelength of sensed light signal can be relatively independent with service wavelength.
Wherein, when the sensed light signal combination that optical splitter sends to the every bar ONU branch road in PON is different, OTDR specifically for:
In the backscattering light signal of the every bar ONU branch road feedback received, exist and characterize lightguide cable link when there is the backscattering light signal of fault, determine to characterize lightguide cable link and there is sensed light signal combination corresponding to the backscattering light signal of fault;
ONU branch road corresponding for the sensed light signal determined combination is defined as fault branch.
When the sensed light signal combination that optical splitter sends to the every bar ONU branch road in PON is incomplete same, OTDR specifically for:
In the backscattering light signal of the every bar ONU branch road feedback received, exist and characterize lightguide cable link when there is the backscattering light signal of fault, determine to characterize lightguide cable link and there is sensed light signal combination corresponding to the backscattering light signal of fault;
When the ONU branch road that the sensed light signal combination determined is corresponding is one, this ONU branch road is defined as fault branch;
When ONU branch road corresponding to the sensed light signal combination determined is at least two, judge whether the difference of the physical length of the ONU branch road that the sensed light signal determined is corresponding is less than predetermined threshold value;
When judged result is for being, the backscattering light signal corresponding according to the sensed light signal combination determined, and the network analysis information obtained in advance, determine fault branch from the ONU branch road that the sensed light signal determined is corresponding;
When judged result is no, the backscattering light signal corresponding according to the sensed light signal combination determined, and the sensed light signal determined combines the reflected light signal produced based on the reflector plate in the ONU branch road of correspondence, determines fault branch from the ONU branch road that the sensed light signal determined is corresponding.
Below in conjunction with said system Organization Chart, the light path detection method that the embodiment of the present invention provides is described in detail.
Suppose that PON comprises 8 ONU branch roads.
OTDR utilizes tunable laser to generate the sensed light signal of 4 different wave lengths, is respectively λ
1, λ
2, λ
3and λ
4, send to optical splitter.
Optical splitter is to λ
1, λ
2, λ
3and λ
4splitting ratio arrange, λ
1splitting ratio be 1:4, λ
2and λ
3splitting ratio be 1:3, λ
4splitting ratio be 1:2;
Determine different sensed light signal combinations, and send a sensed light signal combination to each ONU branch road in PON.As shown in table 1 below, be the sensed light signal combination in the embodiment of the present invention and the corresponding relation of ONU branch road.
Table 1:
| ONU branch road | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Sensed light signal combines | λ 1 | λ 2 | λ 3 | λ 4 | λ 1λ 2 | λ 1λ 3 | λ 1λ 4 | λ 2λ 3 |
Only comprise a sensed light signal in the sensed light signal combination that reference table 1, ONU branch road 1-4 is assigned with respectively, in the sensed light signal combination that ONU branch road 5-8 is assigned with respectively, all comprise two sensed light signal.
It should be noted that, in actual applications, sensed light signal combination determination mode and the method for salary distribution be not limited to above-mentioned example, can according to system specifically need carry out self-defined setting.
In this embodiment, because the sensed light signal combination be assigned with in each ONU branch road is unique, therefore OTDR can receive and contrast the backscattering light signal of different wave length, realizes detecting the lightguide cable link of ONU branch road.Analyze and location.
Such as, in practical operation, if λ
1corresponding back-scattering light characterization 1 place lightguide cable link fault, then this fault can by Primary Location in ONU branch road 1,5,6 and 7.Now only need continue to judge λ
2, λ
3and λ
4backscattering light signal, if λ
2there is lightguide cable link fault in same position in corresponding back-scattering light characterization, then fault can be located in ONU branch road 5; If λ
3there is lightguide cable link fault in the corresponding same position of back-scattering light characterization, then fault can be located in ONU branch road 6; By that analogy, extract the same fault information of the back-scattering light characterization of different wave length through algorithm, system can orient fault branch.
Under above-mentioned application scenarios, optical splitter should independent of the splitting ratio of sensed light signal for the setting of the splitting ratio of the service signal of bearer service, to ensure that service signal and sensed light signal can be relatively independent.In addition, the splitting ratio of sensed light signal is unsuitable excessive, to provide larger power, ensures the accuracy of detection of ONU branch road.
When utilizing native system to carry out light path detection, if need to detect specific some ONU branch roads, then the tunable laser in OTDR can be adjusted to specific wavelength and carry out aimed detection.In addition, this system can also provide the full scan of the light path health condition of ONU branch road, is adjusted to different wave length successively by the tunable laser in OTDR, and distributes to ONU branch road.
Based on same inventive concept, a kind of light path detecting device is also each provided in the embodiment of the present invention, the principle of dealing with problems due to said apparatus is similar to the method that light path detects, and therefore said apparatus is implemented see the enforcement of method, to repeat part and repeat no more.
As shown in Figure 4, be the structural representation of the light path detecting device that the embodiment of the present invention provides, comprise:
Sensed light signal receiving element 41, for receiving the sensed light signal of different wave length;
Sensed light signal combination determining unit 42, for the sensed light signal according to the different wave length received, determines that multiple sensed light signal combines, and wherein, at least comprises a sensed light signal in each sensed light signal combination;
Sensed light signal combination transmitting element 43, for according to the splitting ratio arranged for each sensed light signal, sends a sensed light signal combination to the every bar optical network unit ONU branch road in passive optical-fiber network PON;
Back-scattering light signal receiving unit 44, the backscattering light signal that the sensed light signal comprised during the sensed light signal received with self for receiving every bar ONU branch road feedback combines is corresponding;
Detecting unit 45, for the backscattering light signal according to the every bar ONU branch road feedback received, realizes the detection to every bar ONU branch road.
Optionally, the sensed light signal that sensed light signal combination transmitting element 42 sends to the every bar ONU branch road in PON combines different; Then
Described detecting unit 45, specifically for:
In the backscattering light signal of the every bar ONU branch road feedback received, exist and characterize lightguide cable link when there is the backscattering light signal of fault, determine to characterize lightguide cable link and there is sensed light signal combination corresponding to the backscattering light signal of fault; ONU branch road corresponding for the sensed light signal determined combination is defined as fault branch.
Optionally, the sensed light signal that sensed light signal combination transmitting element 42 sends to the every bar ONU branch road in PON combines incomplete same; Then
Described detecting unit 45, specifically for:
In the backscattering light signal of the every bar ONU branch road feedback received, exist and characterize lightguide cable link when there is the backscattering light signal of fault, determine to characterize lightguide cable link and there is sensed light signal combination corresponding to the backscattering light signal of fault; When the ONU branch road that the sensed light signal combination determined is corresponding is one, this ONU branch road is defined as fault branch; When the ONU branch road that the sensed light signal combination determined is corresponding is at least two, from the ONU branch road that the sensed light signal determined is corresponding, determine fault branch.
Further, described detecting unit 45, specifically for:
Judge whether the difference of the physical length of the ONU branch road that the sensed light signal determined is corresponding is less than predetermined threshold value;
When judged result is for being, the backscattering light signal corresponding according to the sensed light signal combination determined, and the network analysis information obtained in advance, determine fault branch from the ONU branch road that the sensed light signal determined is corresponding;
When judged result is no, the backscattering light signal corresponding according to the sensed light signal combination determined, and the sensed light signal determined combines the reflected light signal produced based on the reflector plate in the ONU branch road of correspondence, determines fault branch from the ONU branch road that the sensed light signal determined is corresponding.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. a light path detection method, is characterized in that, comprising:
Receive the sensed light signal of different wave length;
According to the sensed light signal of the different wave length received, determine that multiple sensed light signal combines, wherein, in each sensed light signal combination, at least comprise a sensed light signal;
According to the splitting ratio arranged for each sensed light signal, send a sensed light signal combination to the every bar optical network unit ONU branch road in passive optical-fiber network PON;
The backscattering light signal that during the sensed light signal received with self receiving every bar ONU branch road feedback combines, the sensed light signal that comprises is corresponding;
According to the backscattering light signal of the every bar ONU branch road feedback received, realize the detection to every bar ONU branch road.
2. the method for claim 1, is characterized in that, the sensed light signal combination sent to the every bar ONU branch road in PON is different; Then
According to the backscattering light signal of the every bar ONU branch road feedback received, realize, to the detection of each ONU branch road, specifically comprising:
In the backscattering light signal of the every bar ONU branch road feedback received, exist and characterize lightguide cable link when there is the backscattering light signal of fault, determine to characterize lightguide cable link and there is sensed light signal combination corresponding to the backscattering light signal of fault;
ONU branch road corresponding for the sensed light signal determined combination is defined as fault branch.
3. the method for claim 1, is characterized in that, the sensed light signal combination sent to the every bar ONU branch road in PON is incomplete same; Then
According to the backscattering light signal of the every bar ONU branch road feedback received, realize, to the detection of each ONU branch road, specifically comprising:
In the backscattering light signal of the every bar ONU branch road feedback received, exist and characterize lightguide cable link when there is the backscattering light signal of fault, determine to characterize lightguide cable link and there is sensed light signal combination corresponding to the backscattering light signal of fault;
When the ONU branch road that the sensed light signal combination determined is corresponding is one, this ONU branch road is defined as fault branch;
When the ONU branch road that the sensed light signal combination determined is corresponding is at least two, from the ONU branch road that the sensed light signal determined is corresponding, determine fault branch.
4. method as claimed in claim 3, is characterized in that, when the ONU branch road that the sensed light signal combination determined is corresponding is at least two, determines fault branch, specifically comprise from the ONU branch road that the sensed light signal determined is corresponding:
Judge whether the difference of the physical length of the ONU branch road that the sensed light signal determined is corresponding is less than predetermined threshold value;
When judged result is for being, the backscattering light signal corresponding according to the sensed light signal combination determined, and the network analysis information obtained in advance, determine fault branch from the ONU branch road that the sensed light signal determined is corresponding;
When judged result is no, the backscattering light signal corresponding according to the sensed light signal combination determined, and the sensed light signal determined combines the reflected light signal produced based on the reflector plate in the ONU branch road of correspondence, determines fault branch from the ONU branch road that the sensed light signal determined is corresponding.
5. a light path detecting device, is characterized in that, comprising:
Sensed light signal receiving element, for receiving the sensed light signal of different wave length;
Sensed light signal combination determining unit, for the sensed light signal according to the different wave length received, determines that multiple sensed light signal combines, and wherein, at least comprises a sensed light signal in each sensed light signal combination;
Sensed light signal combination transmitting element, for according to the splitting ratio arranged for each sensed light signal, sends a sensed light signal combination to the every bar optical network unit ONU branch road in passive optical-fiber network PON;
Back-scattering light signal receiving unit, the backscattering light signal that the sensed light signal comprised during the sensed light signal received with self for receiving every bar ONU branch road feedback combines is corresponding;
Detecting unit, for the backscattering light signal according to the every bar ONU branch road feedback received, realizes the detection to every bar ONU branch road.
6. device as claimed in claim 5, is characterized in that, the sensed light signal combination that sensed light signal combination transmitting element sends to the every bar ONU branch road in PON is different; Then
Described detecting unit, specifically for:
In the backscattering light signal of the every bar ONU branch road feedback received, exist and characterize lightguide cable link when there is the backscattering light signal of fault, determine to characterize lightguide cable link and there is sensed light signal combination corresponding to the backscattering light signal of fault; ONU branch road corresponding for the sensed light signal determined combination is defined as fault branch.
7. device as claimed in claim 5, is characterized in that, the sensed light signal combination that sensed light signal combination transmitting element sends to the every bar ONU branch road in PON is incomplete same; Then
Described detecting unit, specifically for:
In the backscattering light signal of the every bar ONU branch road feedback received, exist and characterize lightguide cable link when there is the backscattering light signal of fault, determine to characterize lightguide cable link and there is sensed light signal combination corresponding to the backscattering light signal of fault; When the ONU branch road that the sensed light signal combination determined is corresponding is one, this ONU branch road is defined as fault branch; When the ONU branch road that the sensed light signal combination determined is corresponding is at least two, from the ONU branch road that the sensed light signal determined is corresponding, determine fault branch.
8. device as claimed in claim 7, is characterized in that, described detecting unit, specifically for:
Judge whether the difference of the physical length of the ONU branch road that the sensed light signal determined is corresponding is less than predetermined threshold value;
When judged result is for being, the backscattering light signal corresponding according to the sensed light signal combination determined, and the network analysis information obtained in advance, determine fault branch from the ONU branch road that the sensed light signal determined is corresponding;
When judged result is no, the backscattering light signal corresponding according to the sensed light signal combination determined, and the sensed light signal determined combines the reflected light signal produced based on the reflector plate in the ONU branch road of correspondence, determines fault branch from the ONU branch road that the sensed light signal determined is corresponding.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112422183A (en) * | 2020-12-08 | 2021-02-26 | 中国联合网络通信集团有限公司 | Network fault positioning method and device |
| CN116429381A (en) * | 2023-06-02 | 2023-07-14 | 成都光创联科技有限公司 | Optical path detection device of multi-port composite optical path device and assembly method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102932056A (en) * | 2012-11-12 | 2013-02-13 | 烽火通信科技股份有限公司 | Method and device for detecting optical signal performance and diagnosing fiber link fault |
| EP2690802A1 (en) * | 2011-03-23 | 2014-01-29 | Telnet Redes Inteligentes, S.A. | System for the certification of a passive optical network and for the detection of problems and faults in the last fibre legs |
| CN103560827A (en) * | 2013-10-18 | 2014-02-05 | 华为技术有限公司 | Fault detection method and device |
| CN103620985A (en) * | 2011-06-10 | 2014-03-05 | 瑞典爱立信有限公司 | Pon supervisoion using otdr measurements |
-
2014
- 2014-10-17 CN CN201410555111.9A patent/CN105577269B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2690802A1 (en) * | 2011-03-23 | 2014-01-29 | Telnet Redes Inteligentes, S.A. | System for the certification of a passive optical network and for the detection of problems and faults in the last fibre legs |
| CN103620985A (en) * | 2011-06-10 | 2014-03-05 | 瑞典爱立信有限公司 | Pon supervisoion using otdr measurements |
| CN102932056A (en) * | 2012-11-12 | 2013-02-13 | 烽火通信科技股份有限公司 | Method and device for detecting optical signal performance and diagnosing fiber link fault |
| CN103560827A (en) * | 2013-10-18 | 2014-02-05 | 华为技术有限公司 | Fault detection method and device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112422183A (en) * | 2020-12-08 | 2021-02-26 | 中国联合网络通信集团有限公司 | Network fault positioning method and device |
| CN112422183B (en) * | 2020-12-08 | 2022-03-15 | 中国联合网络通信集团有限公司 | Network fault positioning method and device |
| CN116429381A (en) * | 2023-06-02 | 2023-07-14 | 成都光创联科技有限公司 | Optical path detection device of multi-port composite optical path device and assembly method |
| CN116429381B (en) * | 2023-06-02 | 2023-08-18 | 成都光创联科技有限公司 | Optical path detection device of multi-port composite optical path device and assembly method |
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