CN102281100B - Long method and the device realizing light path detection in EPON - Google Patents
Long method and the device realizing light path detection in EPON Download PDFInfo
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- CN102281100B CN102281100B CN201010206678.7A CN201010206678A CN102281100B CN 102281100 B CN102281100 B CN 102281100B CN 201010206678 A CN201010206678 A CN 201010206678A CN 102281100 B CN102281100 B CN 102281100B
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Abstract
The invention discloses a kind of long method and device realizing light path detection in EPON (PON), the present invention extends box for boundary with light, detection path is divided into trunk optical fiber and branch optical fiber two-way, and respectively the light path of trunk optical fiber and the light path of branch optical fiber is detected.By the inventive method, overcome light and extend box to the blocking-up of OTDR signal, compensate for the additional optical loss that Long haul fibers brings simultaneously, thus meet whole long demand of carrying out light path detection apart from PON.
Description
Technical field
The present invention relates to optical network system, espespecially a kind of long method and device realizing light path detection in EPON (PON, PassiveOpticalNetwork).
Background technology
The fast development of Cord Broadband Access Network Techniques and low cost demand, facilitate the development adopting optical fiber progressively to replace existing copper cash (wired) system, namely light entering and copper back has become a kind of trend.Simultaneously, EPON is the widest the soonest and the characteristic of most environmental protection, and long apart from EPON for the structure of flattening and simplified network and adapt to the longer network configuration of distance and reduce the features such as cost of investment, accept by most operator and start or prepare for deployment, to meet growing communication user and quicker and better demand for services.
Long distance PON is a kind of intelligent acess technology of point-to-multipoint.Fig. 1 is the existing long composition structural representation apart from EPON, as shown in Figure 1, comprise optical line terminal (OLT, OpticalLineTerminal), optical network unit (ONU, and Optical Distribution Network (ODN, OpticalDistributionNetwork) OpticalNetworkUnit).Usually, the point-to-multipoint structure that an OLT is connected multiple ONU by light prolongation box (RE box, ReachExtenderBox, also referred to as long apart from box) and the power splitter (abbreviation optical splitter) of ODN and formed, as shown in Figure 1.
Because the long light apart from PON extends box, there is blocking light time-domain reflectomer (OTDR, OpticalTimeDomainReflectometer) function of signal, and the additional optical loss that Long haul fibers brings, the existing light path detection scheme to PON is made namely to carry out the method for the whole PON of disposable fast detecting with an OTDR light source or instrument, be not suitable for apart from EPON for long, that is, need to carry out some adjustment to original detection method, could realize carrying out light path detection to whole long distance PON.
Summary of the invention
In view of this, main purpose of the present invention is that providing a kind of grows in EPON, realize light path detection method and device, can overcome light and extend box to the blocking-up of OTDR signal, compensate the additional optical loss that Long haul fibers brings, thus the light path meeting long distance PON detects demand.
For achieving the above object, technical scheme of the present invention is achieved in that
Grow the method realizing light path detection in passive optical network PON, comprising:
Box is extended for boundary with light, by increasing the interface of optical time domain reflectometer OTDR or extend the optical transmitting set increasing OTDR near box or the optical module increasing OTDR near described light prolongation box at described light near described light prolongation box, detection path is divided into trunk optical fiber and branch optical fiber two-way;
Respectively light path detection is carried out to trunk optical fiber and branch optical fiber.
For described by extending the detection mode increasing the interface of OTDR near box at light, describedly respectively light path carried out to trunk optical fiber and branch optical fiber and is detected as:
Adopt OTDR instrument from the interface of described OTDR, the light path of the branch optical fiber after extending box to light detects.
For described by extending the detection mode increasing the optical transmitting set of OTDR near box at light, describedly respectively light path carried out to trunk optical fiber and branch optical fiber and is detected as:
Optical line terminal OLT extends box by described light and controls described OTDR optical transmitting set, and the signal of OTDR optical transmitting set is coupled on optical splitter; The reflected signal of OTDR optical transmitting set is walked around light prolongation box and is entered trunk optical fiber, is then transferred on the OTDR instrument at OLT place.
For described by extending the detection mode increasing the optical module of OTDR near box at light, describedly respectively light path carried out to trunk optical fiber and branch optical fiber and is detected as:
OLT extends box by described light and controls described OTDR optical module, and the signal of OTDR optical module is coupled on optical splitter; The reflected signal of OTDR optical module returns described OTDR optical module and after process, the EONT being extended box by described light is passed back OLT place.
The method also comprises: at OLT place, utilizes the OTDR instrument at OLT place that the signal coupling of OTDR is entered optical fiber, detects with the light path realized OLT extends the trunk optical fiber between box to light.
Grow the device apart from realizing light path in passive optical network PON and detecting, at least comprise light and extend box, be arranged on described light and extend OTDR instrument near box or OTDR optical transmitting set or OTDR optical module, and be arranged on the OTDR instrument at OLT place, wherein,
Be arranged on described light and extend OTDR instrument near box or OTDR optical transmitting set or OTDR optical module, for extending box for boundary with light, detection path being divided into trunk optical fiber and branch optical fiber two-way, and light path detection is carried out to branch optical fiber; Be arranged on the OTDR instrument at OLT place, for carrying out light path detection to trunk optical fiber.
Near described light prolongation box, OTDR instrument is set, this device also comprises wave-division multiplexer filter, being arranged on described light extends between box and optical splitter, and for the signal of the OTDR that is coupled, and the reflected signal of the OTDR instrument extended near box by described light is isolated from primary signal stream;
The C interface of described wave-division multiplexer filter is connected with optical splitter, and P interface and the described light of described wave-division multiplexer filter extend box and is connected, and the R interface of described wave-division multiplexer filter is the interface of the OTDR of described OTDR instrument.
When arranging OTDR optical transmitting set near described light prolongation box, this device also comprises the first wave-division multiplexer filter, the second wave-division multiplexer filter and optical circulator; Wherein,
OTDR optical transmitting set, for providing the detection light source of carrying out when light path detects to the branch optical fiber after described light extends box; Receive the instruction being extended the start detection that box sends from OLT by light, detection signal is exported to the first interface of optical circulator;
First wave-division multiplexer filter, for receiving the reflected signal from optical circulator, and exports trunk optical fiber to from the C interface of self, arrives on the OTDR instrument at OLT place after transmission;
Second wave-division multiplexer filter, for receiving the detection signal from optical circulator, and from the C interface of self export to optical splitter enter branch optical fiber arrive ONU; The C interface of the second wave-division multiplexer filter receives the reflected signal of the OTDR optical transmitting set of branch optical fiber, exports optical circulator second interface to from the R interface of self;
Optical circulator, for receiving the detection signal from OTDR optical transmitting set, and exports the R interface of the second wave-division multiplexer filter to from the second interface of self by detection signal; Receive the reflected signal from the second wave-division multiplexer filter, and export the R interface of the first wave-division multiplexer filter from the 3rd interface of self to.
When arranging OTDR optical module near described light prolongation box, this device also comprises wave-division multiplexer filter, and data processing module; Wherein,
Data processing module, for receiving the order starting test, sends test instruction to OTDR optical module; And for the data analysis obtained and process, and result is extended the EONT of box by light issue OLT;
OTDR optical module, for exporting to the R interface of described wave-division multiplexer filter by the detection signal received; Receive the reflected signal from described wave-division multiplexer filter and export to data processing module;
Wave-division multiplexer filter, for exporting from the C interface of self detection signal from OTDR optical module received to optical splitter and branch optical fiber; The C interface of described wave-division multiplexer filter receives the reflected signal of the OTDR of branch optical fiber, and enters OTDR optical module from the R interface of self.
This device also comprises: the coupler being arranged on OLT place, for the OTDR instrument at OLT place is connected in trunk optical fiber, detects with the light path completed OLT extends the trunk optical fiber between box to light.
Described wave-division multiplexer filter is sideband filter, for the equal transmission of the wavelength of below 1620nm, to the equal transmission of the wavelength of more than 1625nm, there is the safe isolation belt of 5nm.
As can be seen from the technical scheme that the invention described above provides, the present invention extends box for boundary with light, detection path is divided into trunk optical fiber and branch optical fiber two-way, and carries out light path detection to trunk optical fiber and branch optical fiber respectively.By the inventive method, overcome light and extend box to the blocking-up of OTDR signal, compensate for the additional optical loss that Long haul fibers brings simultaneously, thus meet the long light path apart from PON detection demand, achieve and light path detection is carried out to whole PON.
Accompanying drawing explanation
Fig. 1 is the existing long composition structural representation apart from EPON;
Fig. 2 is the long flow chart realizing the method that light path detects in EPON of the present invention;
Fig. 3 is the long composition structural representation realizing the first embodiment of the device that light path detects in EPON of the present invention;
Fig. 4 is the long composition structural representation realizing the second embodiment of the device that light path detects in EPON of the present invention;
Fig. 5 is the long composition structural representation realizing the 3rd embodiment of the device that light path detects in EPON of the present invention.
Embodiment
Fig. 2 is the long flow chart realizing the method that light path detects in EPON of the present invention, as shown in Figure 2, comprising:
Step 200: extend box for boundary with light, detection path is divided into trunk optical fiber and branch optical fiber two-way.
In this step, by increasing the interface of OTDR or extend the optical transmitting set increasing OTDR near box or the optical module increasing OTDR near light prolongation box at light near light prolongation box, detection path can be divided into trunk optical fiber and branch optical fiber two-way.Specific implementation can vide infra the description of Fig. 3 ~ Fig. 5.
Step 201: respectively light path detection is carried out to trunk optical fiber and branch optical fiber.
Step 202: the detection data of branch optical fiber or signal, by OTDR instrument or can be transferred to OLT by trunk optical fiber, by OLT the testing result of trunk optical fiber and branch optical fiber has been integrated and has detected the whole long light path apart from EPON.
After dividing according to the path of step 200, at OLT place, utilize the OTDR instrument at OLT place that the signal coupling of OTDR is entered optical fiber, the signal that light path detects is blocked before light extends box, thus the light path realized OLT extends the trunk optical fiber between box to light detects; And light is extended to the light path detection of the branch optical fiber after box, corresponding different detection modes, can adopt following methods:
For by extending the detection mode increasing the interface of OTDR near box at light, OTDR instrument is carried out light path detection from the interface of OTDR to the branch optical fiber after light prolongation box;
Or, for the detection mode by increasing the optical transmitting set of OTDR near light prolongation box, OLT extends box by light and controls OTDR optical transmitting set, the signal of OTDR optical transmitting set is coupled on optical splitter, and the reflected signal of OTDR optical transmitting set walk around light extend box enter trunk optical fiber, then be transferred on the OTDR instrument at OLT place, thus the light path realizing the branch optical fiber after OLT extends box to light detects; Or,
For the detection mode by increasing the optical module of OTDR near light prolongation box, OLT extends box by light and controls OTDR optical module, the signal of OTDR optical module is coupled on optical splitter, and the reflected signal of OTDR optical module return OTDR optical module place and process after, the embedded Optical Network Terminal (EONT:embeddedONT) being extended box by light is passed back OLT place, thus the light path realizing the branch optical fiber after OLT extends box to light detects.
For the inventive method, provide a kind of device, at least comprise light and extend box, be arranged on described light and extend OTDR instrument near box or OTDR optical transmitting set or OTDR optical module, and be arranged on the OTDR instrument at OLT place, wherein,
Be arranged on described light and extend OTDR instrument near box or OTDR optical transmitting set or OTDR optical module, for extending box for boundary with light, detection path being divided into trunk optical fiber and branch optical fiber two-way, and light path detection is carried out to branch optical fiber; Be arranged on the OTDR instrument at OLT place, for carrying out light path detection to trunk optical fiber.Respectively the device of different detection modes is described in detail below.
Fig. 3 is the long composition structural representation realizing the first embodiment of the device that light path detects in EPON of the present invention, and as shown in Figure 3, this device at least comprises light and extends box and wave-division multiplexer filter, wherein,
Wave-division multiplexer filter, being arranged on light extends between box and optical splitter, the C interface of wave-division multiplexer filter is connected (composition graphs 1 indicates) with the interface (S`/R`) of optical splitter, P interface and the light of wave-division multiplexer filter extend box and are connected, the R interface of wave-division multiplexer filter is the interface of OTDR, for the signal of the OTDR that is coupled, the reflected signal of OTDR instrument is separated from primary signal stream.
The design of wave-division multiplexer filter is relevant with the wavelength chooses of OTDR, and here wave-division multiplexer filter can be sideband filter, and it is to the equal transmission of the wavelength of below 1620nm, and to the equal transmission of the wavelength of more than 1625nm, it has the safe isolation belt of a 5nm.
The operation principle of first embodiment of the apparatus of the present invention shown in Fig. 3 is: the mode of OTDR instrument according to Fig. 3 connected, and opens OTDR instrument and carries out light path detection (also referred to as fault detect) to the branch optical fiber that light extends between box to ONU.In addition, at OLT place, a coupler can be adopted to be connected on trunk optical fiber by OTDR instrument, the light path that can complete like this OLT extends the trunk optical fiber between box to light detects (not shown in Fig. 3, shown in composition graphs 1), this realization belongs to technology as well known to those skilled in the art, and specific implementation connected mode repeats no more here.
By the detection of the first embodiment, complete and whole long comprehensive light path apart from PON is detected.In first embodiment shown device, only need increase a passive leaded light device and wave-division multiplexer filter, but the device shown in the first embodiment can not carry out all light path detection to long apart from PON at OLT place of office side, twice detection is carried out by extending box place at OLT place and light respectively, the result of twice detection is integrated, could realize carrying out all light path detections to long apart from PON.The program is changed minimum to system.
Fig. 4 is the long composition structural representation realizing the second embodiment of the device that light path detects in EPON of the present invention, as shown in Figure 4, this device at least comprises light and extends box, OTDR optical transmitting set, the first wave-division multiplexer filter, the second wave-division multiplexer filter, and optical circulator, wherein
OTDR optical transmitting set, extends to light the detection light source that the branch optical fiber after box carries out when light path detects for providing.
OTDR optical transmitting set extends box by light and obtains power supply, and OLT extends box by light and to manage OTDR optical transmitting set and to control.
When the detection instruction of OLT received by OTDR optical transmitting set, the signal of OTDR optical transmitting set enters the interface 1 of optical circulator, then enter the R interface of the second wave-division multiplexer filter from the interface 2 of optical circulator, then enter optical splitter and branch optical fiber from the C interface of the second wave-division multiplexer filter; And the reflected signal of OTDR optical transmitting set passes through the second wave-division multiplexer filter C interface to R interface, the light path that the interface 2 of optical circulator is formed to the R interface of interface 3 and the first wave-division multiplexer filter to C interface, walk around light prolongation box and enter trunk optical fiber, be finally transferred on the OTDR instrument at OLT place.
First wave-division multiplexer filter, builds an interface for walking around the light prolongation box light path transferred back on the OTDR instrument at OLT place for the detection signal of branch optical fiber, does not affect normal light communication channel simultaneously.Therefore the C interface of the first wave-division multiplexer filter is connected with (R`/S`) interface of trunk optical fiber, one end that P interface and the light of the first wave-division multiplexer filter extend box is connected, and the R interface of the first wave-division multiplexer filter is connected with the interface 3 of optical circulator.
Second wave-division multiplexer filter, the signal for the OTDR optical transmitting set that is coupled enters branch optical fiber; The reflected signal of OTDR optical transmitting set is separated from main flow signal.The C interface of the second wave-division multiplexer filter is connected with (S`/R`) interface of optical splitter, and the other end that P interface and the light of the second wave-division multiplexer filter extend box is connected, and the R interface of the second wave-division multiplexer filter is connected with optical circulator interface 2.
The design of wave-division multiplexer filter is relevant with the wavelength chooses of OTDR, here the first and second wave-division multiplexer filters can be all sideband filters, it is to the equal transmission of the wavelength of below 1620nm, and to the equal transmission of the wavelength of more than 1625nm, it has the safe isolation belt of a 5nm.
Optical circulator, for OTDR optical transmitting set is introduced the second wave-division multiplexer filter, lead the reflected signal of OTDR optical transmitting set the first wave-division multiplexer filter simultaneously.The interface 2 of optical circulator is connected with the R interface of the second wave-division multiplexer filter, and the interface 1 of optical circulator is connected with OTDR optical transmitting set, and the interface 3 of optical circulator is connected with the R interface of the first wave-division multiplexer filter.
Device shown in Fig. 4, constitutes three light paths, and the first optical channel is by the first wave-division multiplexer filter, and light extends the backbone optical path of box and the second wave-division multiplexer filter composition, for transmitting the light of up-downgoing; Second optical channel is by OTDR optical transmitting set, and the light path of the detection resources of the branch optical fiber of optical circulator and the second wave-division multiplexer filter composition, carries out light path detection for being imported on branch optical fiber by the signal of OTDR optical transmitting set to it; 3rd optical channel is by the second wave-division multiplexer filter, the return loop of reflected signal of the OTDR optical transmitting set of optical circulator and the first wave-division multiplexer filter composition, is transferred to OTDR instrument at OLT place for the detection signal that light extended the branch optical fiber after box through trunk optical fiber.
The operation principle of second embodiment of the apparatus of the present invention shown in Fig. 4 is, the light path of trunk optical fiber detects and undertaken by OLT OTDR instrument, and the description in its process the first embodiment as shown in Figure 3, repeats no more here.
The light path of branch optical fiber detects and is realized by the device described in Fig. 4.First, sent the instruction of start detection to OTDR optical transmitting set by light prolongation box by OLT, the detection signal of OTDR optical transmitting set enters from the interface 1 of optical circulator, then export the R interface of the second wave-division multiplexer filter to from the interface 2 of optical circulator, then from the C interface of the second wave-division multiplexer filter export to optical splitter enter branch optical fiber arrive ONU; The reflected signal of the OTDR optical transmitting set of branch optical fiber enters the C interface of the second wave-division multiplexer filter from optical splitter, then optical circulator interface 2 is exported to from the R interface of the second wave-division multiplexer filter, then export from optical circulator interface 3 and enter the R interface that first wave divides multiplex filter, export trunk optical fiber to from the C interface of the first wave-division multiplexer filter again, arrive on the OTDR instrument at OLT place after transmission; Then the signal of the branch optical fiber received and trunk optical fiber is passed on OLT by OTDR instrument after treatment, and these results integrate to complete and detect the whole long light path apart from PON by OLT.
By the device of the second embodiment shown in Fig. 4, break the former long light path apart from PON system and detect the mode must overlapped checkout equipments with two or carry out in different places at twice detecting, the device of Fig. 4 makes operator just can carry out light path detection and result treatment with an OTDR instrument to whole long distance PON automation once at OLT place of office side, for operator saves detection time greatly, save and detect human cost, finally for operator saves operation cost.
Fig. 5 is the long composition structural representation realizing the 3rd embodiment of the device that light path detects in EPON of the present invention, and as shown in Figure 5, this device at least comprises OTDR optical module, data processing module, wave-division multiplexer filter and light and extends box, wherein,
OTDR optical module, for carrying out light path detection to branch optical fiber, OLT sends the instruction of start detection to OTDR optical module by light prolongation box, the detection signal of OTDR optical module is coupled into optical splitter and branch optical fiber by wave-division multiplexer filter, its reflected signal returns to the optical module place of OTDR by wave-division multiplexer filter, this signal is transferred to OLT place by after data processing module process by the EONT of light prolongation box, and the testing result of OLT this result comprehensive and trunk optical fiber completes and detects the whole long light path apart from PON system.
Data processing module is used for carrying out data processing to the reflected signal of OTDR optical module, and the result of process is transferred to OLT by local controller and EONT through trunk optical fiber.If the local controller that light extends in box has enough excessive data disposal abilities, the data processing module in the present embodiment can omit.
Wave-division multiplexer filter, is arranged on optical splitter and light and extends between box, for the signal coupling of OTDR optical module is entered branch optical fiber, and is separated from main flow signal by the reflected signal of OTDR optical module and leads back in OTDR optical module.The C interface of wave-division multiplexer filter is connected with (S`/R`) interface of optical splitter, and P interface and the light of wave-division multiplexer filter extend box and is connected, and the R interface of wave-division multiplexer filter is connected with OTDR optical module.
The design of wave-division multiplexer filter is relevant with the wavelength chooses of OTDR, and here wave-division multiplexer filter can be sideband filter, and it is to the equal transmission of the wavelength of below 1620nm, and to the equal transmission of the wavelength of more than 1625nm, it has the safe isolation belt of a 5nm.
The operation principle of the 3rd embodiment of the apparatus of the present invention shown in Fig. 5 is: the existing EONT being extended box by light, the order starting test is sent to the data processing module being positioned at light prolongation box place, this data processing module sends test instruction to the OTDR optical module that it is connected, OTDR optical module sends the R interface that detection signal enters wave-division multiplexer filter, then enters optical splitter and branch optical fiber from the C interface of wave-division multiplexer filter; Then the OTDR of branch optical fiber reflected signal through wave-division multiplexer filter C interface and be branched out to R interface and enter on OTDR optical module, and be transferred to data processing module, the EONT that result extends box by light to the data analysis obtained and process, and is issued OLT by this module.In addition, at OLT place, a coupler can be adopted to be connected on trunk optical fiber by OTDR instrument, the light path that can complete like this OLT extends the trunk optical fiber between box to light detects (not shown in Fig. 5, shown in composition graphs 1), this realization belongs to technology as well known to those skilled in the art, and specific implementation connected mode repeats no more here.The aggregation of data of the trunk optical fiber that such OLT records according to this result and OTDR instrument completes together and detects the whole long light path apart from PON system.
The automaticity of the device shown in Fig. 5 is the highest, and detect the light path of trunk optical fiber and detect can carry out simultaneously the light path of branch optical fiber, OTDR instrument does not need to make any amendment.By the device of the 3rd embodiment shown in Fig. 5, operator just can carry out complete light path to whole long distance PON at OLT place of office side and detect, and the OTDR signal simultaneously avoiding branch optical fiber well is again damaged by long-haul transmission and subtracts.For operator saves detection time greatly, save and detect human cost, finally for operator saves operation cost.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention, and all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. the long method realizing light path and detect in passive optical network PON, is characterized in that, comprising:
Box is extended for boundary with light, by increasing the interface of optical time domain reflectometer OTDR or extend the optical transmitting set increasing OTDR near box or the optical module increasing OTDR near described light prolongation box at described light near described light prolongation box, detection path is divided into trunk optical fiber and branch optical fiber two-way, and light path detection is carried out to described branch optical fiber;
At optical line terminal OLT place, by the OTDR instrument at described OLT place, the signal coupling of described OTDR is entered optical fiber, the signal that light path detects is blocked before described light extends box, thus the light path realized described OLT extends the described trunk optical fiber between box to described light detects.
2. method according to claim 1, is characterized in that, for described by extending the detection mode increasing the interface of OTDR near box at light, describedly carry out light path to trunk optical fiber and branch optical fiber respectively and is detected as:
Adopt OTDR instrument from the interface of described OTDR, the light path of the branch optical fiber after extending box to light detects.
3. method according to claim 1, is characterized in that, for described by extending the detection mode increasing the optical transmitting set of OTDR near box at light, describedly carry out light path to trunk optical fiber and branch optical fiber respectively and is detected as:
Optical line terminal OLT extends box by described light and controls described OTDR optical transmitting set, and the signal of OTDR optical transmitting set is coupled on optical splitter; The reflected signal of OTDR optical transmitting set is walked around light prolongation box and is entered trunk optical fiber, is then transferred on the OTDR instrument at OLT place.
4. method according to claim 1, is characterized in that, for described by extending the detection mode increasing the optical module of OTDR near box at light, describedly carry out light path to trunk optical fiber and branch optical fiber respectively and is detected as:
OLT extends box by described light and controls described OTDR optical module, and the signal of OTDR optical module is coupled on optical splitter; The reflected signal of OTDR optical module returns described OTDR optical module and after process, the EONT being extended box by described light is passed back OLT place.
5. the method according to any one of Claims 1 to 4, is characterized in that, the method also comprises: at OLT place, utilizes the OTDR instrument at OLT place that the signal coupling of OTDR is entered optical fiber, detects with the light path realized OLT extends the trunk optical fiber between box to light.
6. a long device apart from realizing light path in passive optical network PON and detecting, is characterized in that, at least comprise light and extend box, is arranged on described light and extends OTDR instrument near box or OTDR optical transmitting set or OTDR optical module, and be arranged on the OTDR instrument at OLT place, wherein,
Be arranged on described light and extend OTDR instrument near box or OTDR optical transmitting set or OTDR optical module, for extending box for boundary with light, detection path being divided into trunk optical fiber and branch optical fiber two-way, and light path detection is carried out to branch optical fiber; Be arranged on the OTDR instrument at OLT place, for carrying out light path detection to trunk optical fiber.
7. device according to claim 6, is characterized in that,
Near described light prolongation box, OTDR instrument is set, this device also comprises wave-division multiplexer filter, being arranged on described light extends between box and optical splitter, and for the signal of the OTDR that is coupled, and the reflected signal of the OTDR instrument extended near box by described light is isolated from primary signal stream;
The C interface of described wave-division multiplexer filter is connected with optical splitter, and P interface and the described light of described wave-division multiplexer filter extend box and is connected, and the R interface of described wave-division multiplexer filter is the interface of the OTDR of described OTDR instrument.
8. device according to claim 6, is characterized in that, when arranging OTDR optical transmitting set near described light prolongation box, this device also comprises the first wave-division multiplexer filter, the second wave-division multiplexer filter and optical circulator; Wherein,
OTDR optical transmitting set, for providing the detection light source of carrying out when light path detects to the branch optical fiber after described light extends box; Receive the instruction being extended the start detection that box sends from OLT by light, detection signal is exported to the first interface of optical circulator;
First wave-division multiplexer filter, for receiving the reflected signal from optical circulator, and exports trunk optical fiber to from the C interface of self, arrives on the OTDR instrument at OLT place after transmission;
Second wave-division multiplexer filter, for receiving the detection signal from optical circulator, and from the C interface of self export to optical splitter enter branch optical fiber arrive ONU; The C interface of the second wave-division multiplexer filter receives the reflected signal of the OTDR optical transmitting set of branch optical fiber, exports optical circulator second interface to from the R interface of self;
Optical circulator, for receiving the detection signal from OTDR optical transmitting set, and exports the R interface of the second wave-division multiplexer filter to from the second interface of self by detection signal; Receive the reflected signal from the second wave-division multiplexer filter, and export the R interface of the first wave-division multiplexer filter from the 3rd interface of self to.
9. device according to claim 6, is characterized in that, when arranging OTDR optical module near described light prolongation box, this device also comprises wave-division multiplexer filter, and data processing module; Wherein,
Data processing module, for receiving the order starting test, sends test instruction to OTDR optical module; And for the data analysis obtained and process, and result is extended the EONT of box by light issue OLT;
OTDR optical module, for exporting to the R interface of described wave-division multiplexer filter by the detection signal received; Receive the reflected signal from described wave-division multiplexer filter and export to data processing module;
Wave-division multiplexer filter, for exporting from the C interface of self detection signal from OTDR optical module received to optical splitter and branch optical fiber; The C interface of described wave-division multiplexer filter receives the reflected signal of the OTDR of branch optical fiber, and enters OTDR optical module from the R interface of self.
10. the device according to any one of claim 6 ~ 9, it is characterized in that, this device also comprises: the coupler being arranged on OLT place, for the OTDR instrument at OLT place is connected in trunk optical fiber, detects with the light path completed OLT extends the trunk optical fiber between box to light.
11. devices according to claim 7 or 9, is characterized in that,
Described wave-division multiplexer filter is sideband filter, for the equal transmission of the wavelength of below 1620nm, to the equal transmission of the wavelength of more than 1625nm, there is the safe isolation belt of 5nm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010206678.7A CN102281100B (en) | 2010-06-12 | 2010-06-12 | Long method and the device realizing light path detection in EPON |
| PCT/CN2011/070983 WO2011153840A1 (en) | 2010-06-12 | 2011-02-15 | Method and apparatus for achieving optical line detection in long reach passive optical network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010206678.7A CN102281100B (en) | 2010-06-12 | 2010-06-12 | Long method and the device realizing light path detection in EPON |
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| Publication Number | Publication Date |
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| CN102281100A CN102281100A (en) | 2011-12-14 |
| CN102281100B true CN102281100B (en) | 2016-02-24 |
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| WO2012095044A2 (en) * | 2012-02-21 | 2012-07-19 | 华为技术有限公司 | Optical transceiver module, passive optical network system, optical fiber detection method and system |
| CN103973361B (en) * | 2013-01-25 | 2016-12-28 | 中兴通讯股份有限公司 | The optical fiber fault detecting system of EPON and method |
| US9627842B2 (en) | 2013-03-05 | 2017-04-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Optical amplifier arrangement |
| CN106100746B (en) * | 2016-04-25 | 2018-05-15 | 海普林科技（武汉）有限公司 | A kind of test waves trunking and its control method for OTDR fiber laser arrays |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1866790A (en) * | 2005-11-16 | 2006-11-22 | 华为技术有限公司 | PON network design method using OTDR detection light path |
| CN101321022A (en) * | 2008-07-22 | 2008-12-10 | 电子科技大学 | Optical fiber network sensing system |
| CN101414932A (en) * | 2007-10-15 | 2009-04-22 | 华为技术有限公司 | Method, system and apparatus managing alarm of long-distance passive optical network system |
| CN101640815A (en) * | 2008-07-29 | 2010-02-03 | 华为技术有限公司 | Remote transmission method, remote transmission device and remote transmission system for PON |
| CN101651492A (en) * | 2008-08-15 | 2010-02-17 | 华为技术有限公司 | Remote transmission device, remote transmission system and abnormal luminous fault processing method for optical access network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1866790A (en) * | 2005-11-16 | 2006-11-22 | 华为技术有限公司 | PON network design method using OTDR detection light path |
| CN101414932A (en) * | 2007-10-15 | 2009-04-22 | 华为技术有限公司 | Method, system and apparatus managing alarm of long-distance passive optical network system |
| CN101321022A (en) * | 2008-07-22 | 2008-12-10 | 电子科技大学 | Optical fiber network sensing system |
| CN101640815A (en) * | 2008-07-29 | 2010-02-03 | 华为技术有限公司 | Remote transmission method, remote transmission device and remote transmission system for PON |
| CN101651492A (en) * | 2008-08-15 | 2010-02-17 | 华为技术有限公司 | Remote transmission device, remote transmission system and abnormal luminous fault processing method for optical access network |
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