CN201054594Y - Optical passive network backup device - Google Patents
Optical passive network backup device Download PDFInfo
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- CN201054594Y CN201054594Y CNU2007200711776U CN200720071177U CN201054594Y CN 201054594 Y CN201054594 Y CN 201054594Y CN U2007200711776 U CNU2007200711776 U CN U2007200711776U CN 200720071177 U CN200720071177 U CN 200720071177U CN 201054594 Y CN201054594 Y CN 201054594Y
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- optical
- circuit protection
- fibre circuit
- protection structure
- network terminal
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- 230000003287 optical effect Effects 0.000 title claims abstract description 62
- 239000000835 fiber Substances 0.000 claims abstract description 39
- 230000004224 protection Effects 0.000 claims abstract description 38
- 239000013307 optical fiber Substances 0.000 claims description 25
- 230000001681 protective effect Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229940085805 fiberall Drugs 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
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Abstract
The utility model relates to an optical passive network backup device, which includes a principal optical network terminal, a spare optical network terminal, a fiber circuit protective structure, an optical splitter and an optical network unit; wherein, the principal optical network terminal is connected with the input end 1 or the input end 2 of the optical splitter through the fiber circuit protective structure. The output end of the optical splitter is connected with an optical interface of the optical network unit. Compared with the prior art, the utility model provides a plurality of protections for a PON system, meanwhile, the cost is lower than that of the prior system.
Description
Technical field
The utility model relates to light passive network, particularly relates to a kind of light passive network back-up device.
Background technology
In the present access technology, PON (light passive network) receives publicity the most.Along with the expansion of userbase, the protection of optical fiber link is extremely important.
As Fig. 1, the mode that general PON network using is protected fully, in case the interruption situation appears in the optical fiber in the link, system will automatically switch in the backup optical fiber.Traditional designing requirement all needs to carry out the optical fiber main-apparatus protection in trunk side (OLT is to optical branching device, and OLT is an optical line terminal) or user side (optical branching device is to ONU, and ONU is an optical network unit); The whole protecting system need increase extra optical branching device, and each ONU also needs to increase by 1 optical coupler, connects active and standby optical fiber respectively; Cause the protection system of PON very expensive.
Summary of the invention
The purpose of this utility model is exactly to provide a kind of light passive network back-up device for the defective that overcomes above-mentioned prior art existence.
The purpose of this utility model can be achieved through the following technical solutions: a kind of light passive network back-up device, it is characterized in that, comprise the key light network terminal, standby Optical Network Terminal, fibre circuit protection structure, optical branching device, optical network unit, the described key light network terminal is connected with the input one or the input two of optical branching device by fibre circuit protection structure; Described standby Optical Network Terminal is connected with the input one or the input two of optical branching device by fibre circuit protection structure; The output of described optical branching device is connected with the optical interface of optical network unit.
Described fibre circuit protection structure comprises optical switch module, IN1 end, IN2 end, OUT1 end, OUT2 end, and described optical switch module is built in the fibre circuit protection structure; Described IN1 end is connected with OUT1 end or OUT2 end by optical switch module, and described IN2 end is connected with OUT1 end or OUT2 end by optical switch module.
The TRx mouth of the described key light network terminal is connected by the OUT1 end of main fiber with fibre circuit protection structure, and the IN1 end of fibre circuit protection structure is connected with the input one of optical branching device by the trunk link fiber; The TRx mouth of described standby Optical Network Terminal is connected by the OUT2 end of standby optical fiber with fibre circuit protection structure, and the IN2 end of fibre circuit protection structure is connected with the input two of optical branching device by reserve link optical fiber.
Described optical switch module adopts array of photoswitch.
Described optical branching device adopts 2 * 32 optical branching devices.
Compared with prior art, the utlity model has following advantage:
1, when OLT met with outage or other faults, system can automatically switch among the standby OLT, and light path is also carried out automatic switchover simultaneously;
2, network configuration is simple, and OLT equipment and ONU equipment all are standard devices, need not increase a plurality of photoelectricity receiver modules in ONU equipment;
3, lay special stress on protecting core part of O LT and trunk optical fiber in the network, ignore the protection of each terminal ONU, making network, simple cost is cheaper simultaneously, is promoted easily and uses.
Description of drawings
Fig. 1 is the schematic diagram of existing a kind of light passive network back-up device;
Fig. 2 is a schematic diagram of the present utility model;
Fig. 3 is the schematic diagram of embodiment 1;
Fig. 4 is the schematic diagram of embodiment 2.
Wherein: the 1-key light network terminal, the standby Optical Network Terminal of 2-, 3-fibre circuit protection structure, 4-trunk link fiber, 5-reserve link optical fiber, 6-optical branching device, 7-optical network unit.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 2, the utility model provides the dual system protection of OLT side core in the protection cost of the whole PON of reduction system, causes whole network to occur interrupting to prevent that OLT from breaking down.The utility model mainly comprises and mainly comprises standby OLT equipment, fibre circuit protection instrument, standby optical fiber link, the splitter of 2x32.
Parts 1: key light network-termination device OLT is the nucleus equipment in the network, is placed in central machine room, is responsible for communicating with long-range optical network unit (ONU).The TRx of main OLT is connected on the main fiber and is connected with the delivery outlet OUT1 of parts 3 fibre circuits protection instrument.
Parts 2: standby optical network terminal OLT is the nucleus equipment in the network, is placed in central machine room, and when main OLT broke down, system start-up was equipped with OLT and carries out work.The TRx of spare OLT is connected fully and is connected with the delivery outlet OUT2 of parts 3 fibre circuits protection instrument on the optical fiber.
Parts 3: fibre circuit protection instrument can realize judging automatically light intensity situation in the optical fiber link, and it will automatically switch in the other optical-fibre channel during less than threshold value when the light signal that receives.The fiber optic protection instrument built in light switch of this patent can be realized IN1 to OUT1, and IN2 is to OUT2, and IN1 is to OUT2, and IN2 freely switches to OUT1's.
Parts 4: the optical fiber of trunk link connects the IN1 port of fibre circuit protection instrument and the 1st input port of parts 6 (2x32 splitter).
Parts 5: the optical fiber of reserve link connects the IN2 port of fibre circuit protection instrument and the 2nd input port of parts 6 (2x32 splitter).
Parts 6:2x32 or (2xN) optical branching device.Its effect is that the light intensity of input port 1 and input port 2 is all assigned in each optical network unit ONU parts 7.
Parts 7: optical network unit ONU is placed in user side and local side apparatus OLT communicates.One of them delivery outlet of optical interface link 6 splitters of each ONU.
Generally speaking, main OLT leaves different places in spare OLT, and divides other power-supply system power supply.Trunk optical fiber all is to walk different paths with standby optical fiber, to guarantee the safety of system.Fibre circuit protection instrument and main OLT put together, use same power-supply system power supply.When power-down conditions occurring, fibre circuit protection instrument can switch to optical fiber link in the spare OLT automatically.
When trunk optical fiber broke down, the light signal of uploading from trunk of ONU was less than threshold value, and fibre circuit protection instrument switches to passage the standby optical fiber from trunk optical fiber automatically.
As Fig. 3, when OLT meets with power down, perhaps fault such as system crash the time, fibre circuit protection instrument detects the variation of the output intensity of OLT, when its less than setting threshold the time, will automatically switch among the standby OLT, guarantee the operate as normal of system.
As Fig. 4; because when accidentally construction or other reasons were ruined, the light signal of uploading of the ONU that surveys on the trunk direction will be less than preset threshold, fibre circuit protection instrument is communicated with OUT1 and IN2 when trunk optical fiber; main OLT is connected with standby optical fiber, makes the system restoration operate as normal.
Claims (5)
1. light passive network back-up device, it is characterized in that, comprise the key light network terminal, standby Optical Network Terminal, fibre circuit protection structure, optical branching device, optical network unit, the described key light network terminal is connected with the input one or the input two of optical branching device by fibre circuit protection structure; Described standby Optical Network Terminal is connected with the input one or the input two of optical branching device by fibre circuit protection structure; The output of described optical branching device is connected with the optical interface of optical network unit.
2. a kind of light passive network back-up device according to claim 1, it is characterized in that, described fibre circuit protection structure comprises optical switch module, IN1 end, IN2 end, OUT1 end, OUT2 end, and described optical switch module is built in the fibre circuit protection structure; Described IN1 end is connected with OUT1 end or OUT2 end by optical switch module, and described IN2 end is connected with OUT1 end or OUT2 end by optical switch module.
3. a kind of light passive network back-up device according to claim 2, it is characterized in that, the TRx mouth of the described key light network terminal is connected by the OUT1 end of main fiber with fibre circuit protection structure, and the IN1 end of fibre circuit protection structure is connected with the input one of optical branching device by the trunk link fiber; The TRx mouth of described standby Optical Network Terminal is connected by the OUT2 end of standby optical fiber with fibre circuit protection structure, and the IN2 end of fibre circuit protection structure is connected with the input two of optical branching device by reserve link optical fiber.
4. a kind of light passive network back-up device according to claim 2 is characterized in that, described optical switch module adopts array of photoswitch.
5. a kind of light passive network back-up device according to claim 1 is characterized in that, described optical branching device adopts 2 * 32 optical branching devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200711776U CN201054594Y (en) | 2007-06-15 | 2007-06-15 | Optical passive network backup device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200711776U CN201054594Y (en) | 2007-06-15 | 2007-06-15 | Optical passive network backup device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201054594Y true CN201054594Y (en) | 2008-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200711776U Expired - Lifetime CN201054594Y (en) | 2007-06-15 | 2007-06-15 | Optical passive network backup device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009116904A1 (en) * | 2008-03-17 | 2009-09-24 | Telefonaktiebolaget L M Ericsson (Publ) | Immediate protection scheme for passive optical network |
| WO2009116903A1 (en) * | 2008-03-17 | 2009-09-24 | Telefonaktiebolaget L M Ericsson (Publ) | Fast protection scheme for passive optical network |
| CN101562761B (en) * | 2009-05-18 | 2012-02-01 | 杭州华三通信技术有限公司 | Method and system for backup storage in optical network |
| CN104022927A (en) * | 2014-05-19 | 2014-09-03 | 武汉邮电科学研究院 | Fixed mobile convergence wavelength division access ring and access method |
| CN104601218A (en) * | 2015-02-15 | 2015-05-06 | 桂林恒毅金宇通信技术有限公司 | Intelligent optical-port bypass exchange protecting system |
| CN106033993A (en) * | 2015-03-16 | 2016-10-19 | 东南大学 | Optical line terminal interface device and its fault protection and energy saving method |
| CN106936494A (en) * | 2015-12-29 | 2017-07-07 | 上海贝尔股份有限公司 | A kind of EPON protection system and its device |
-
2007
- 2007-06-15 CN CNU2007200711776U patent/CN201054594Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009116904A1 (en) * | 2008-03-17 | 2009-09-24 | Telefonaktiebolaget L M Ericsson (Publ) | Immediate protection scheme for passive optical network |
| WO2009116903A1 (en) * | 2008-03-17 | 2009-09-24 | Telefonaktiebolaget L M Ericsson (Publ) | Fast protection scheme for passive optical network |
| CN101562761B (en) * | 2009-05-18 | 2012-02-01 | 杭州华三通信技术有限公司 | Method and system for backup storage in optical network |
| CN104022927A (en) * | 2014-05-19 | 2014-09-03 | 武汉邮电科学研究院 | Fixed mobile convergence wavelength division access ring and access method |
| CN104022927B (en) * | 2014-05-19 | 2017-10-10 | 武汉邮电科学研究院 | Gu move fusion wavelength-division access ring and cut-in method |
| CN104601218A (en) * | 2015-02-15 | 2015-05-06 | 桂林恒毅金宇通信技术有限公司 | Intelligent optical-port bypass exchange protecting system |
| CN106033993A (en) * | 2015-03-16 | 2016-10-19 | 东南大学 | Optical line terminal interface device and its fault protection and energy saving method |
| CN106936494A (en) * | 2015-12-29 | 2017-07-07 | 上海贝尔股份有限公司 | A kind of EPON protection system and its device |
| CN106936494B (en) * | 2015-12-29 | 2019-10-01 | 上海诺基亚贝尔股份有限公司 | A kind of passive optical network protection system and its apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI B-STAR BROADBAND TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SHANGHAI B-STAR BROADBAND TECHNOLOGY + APPLICATION ENGINEERING RESEARCH CENTER CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 200336 Shanghai city Changning District Honggu Road No. 150 Patentee after: Shanghai B-Star Broadband Technology Co., Ltd. Address before: 200336 Shanghai City Honggu Road No. 150 Patentee before: Shanghai B-STAR Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080430 |