CN102427566B - Coexistence and evolution method and system from traditional optical network to target optical network - Google Patents
Coexistence and evolution method and system from traditional optical network to target optical network Download PDFInfo
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- CN102427566B CN102427566B CN201110361201.0A CN201110361201A CN102427566B CN 102427566 B CN102427566 B CN 102427566B CN 201110361201 A CN201110361201 A CN 201110361201A CN 102427566 B CN102427566 B CN 102427566B
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Abstract
The invention provides a coexistence and evolution method and system from a traditional optical network to a target optical network. The coexistence and evolution method comprises the following steps of: integrating a wavelength division multiplexer in an optical fiber terminal unit of an optical fiber distribution frame in the traditional optical network; respectively connecting an optical line terminal of the target optical network and an optical line terminal of the traditional optical network to different wavelength input ends of the optical fiber terminal unit in the optical fiber distribution frame; and carrying out jumper connection on the output end of the optical fiber terminal unit and a trunk optical cable terminal unit on the optical fiber distribution frame, thereby realizing the coexistence of the traditional optical network and the target optical network in the same optical distribution network. After the evolution to the target optical network is finished, the optical fiber terminal unit of the integrated wavelength division multiplexer is continuously retained and can be used for accessing radio and television business or diagnosing an optical network line and the like. According to the coexistence and evolution method and system provided by the invention, the wavelength division multiplexer is integrated in the optical fiber terminal unit of the optical fiber distribution frame, so that the evolution operation flow is simplified while the evolution to next generation of optical network is realized, the consumption of optical fiber materials is reduced and the operation is accessible.
Description
Technical field
The present invention relates to optical-fiber network technical field, particularly a kind of coexisting and evolution method and system from existing optical-fiber network to target light network.
Background technology
At present, for taking the different optical-fiber network of service wavelength scope (Passive Optical Network, PON), evolution scheme from existing PON to target P ON is generally and utilizes wavelength division multiplexing (Wavelength Division Multiplexing, WDM) existing PON and target P ON service wavelength are coupled in an optical fiber by equipment, realize two kinds of PON technology at same optical distribution network (opticaldistribution network, coexisting ODN), as shown in Figure 1.
Specifically, the implementation that current each PON manufacturer recommends adopts installs external WDM equipment existing PON and target P ON service wavelength to be coupled in an optical fiber in optical line terminal (opticalline terminal, OLT) side.Concrete coexist and evolution step as shown in Figure 2:
The first step, installs external WDM in the OLT side of existing PON;
Second step, between OLT and the WDM of existing PON, between OLT and the WDM of target P ON, WDM and fibre distribution frame (Optical Distribution Frame, ODF) lay between and connect optical cable or optical fiber, armamentarium install connect and commissioning after, existing PON and target P ON operate in coexistence under the optical branching device (Passive Optical Splitter, POS) of same ODN can be realized;
3rd step, the optical fiber cable between OLT and the ODF removing existing PON;
4th step, OLT office under treat that user all have employed the optical network unit (Optical Network Unit, ONU) of target P ON after, again lay the optical fiber cable of OLT and the ODF of linking objective PON.Optical fiber cable between OLT and the WDM removing existing PON again, between OLT and the WDM of target P ON and between WDM and ODF, and remove the OLT of WDM and existing PON.
Existingly to coexist and evolution embodiment for above-mentioned, due to existing PON Scaledeployment, the various network element distance of local side is about 20-50 rice.According to existing scheme implementation, need repeatedly lay between each network element and remove a large amount of optical fiber cables, implementation step is many, process is complicated, the cutover time is long, so can cause service disconnection, the evolution failure of long period, or go wrong and be difficult to return back to initial condition, have certain risk.Can consume a large amount of optical cable and optical fibres in addition, quantities is large, and cost is high.
Summary of the invention
The invention provides a kind of coexisting and evolution method and system from existing optical-fiber network to target light network, for reducing the consumption waste of optical fiber cable material, reducing engineering construction amount.
On the one hand, the invention provides a kind of from existing optical-fiber network coexisting and evolution method to target light network, comprise the steps:
A. wavelength division multiplexer is integrated in the fibre termination unit of the fine distributing frame of described existing optical networks;
B. in described fibre distribution frame, the optical line terminal of described target light network is connected with the first wave length input of described fibre termination unit;
C. in described fibre distribution frame, the first jumping fiber is laid by between the optical line terminal of described existing optical-fiber network and the second wave length input of described fibre termination unit, and the OLT side of described first jumping fiber wouldn't Cheng Duan, lay the second jumping fiber between backbone optical cable terminal unit on described fibre distribution frame and the output of described fibre termination unit, and the backbone optical cable side of described second jumping fiber wouldn't Cheng Duan;
D. the original jumping fiber between the optical line terminal of existing optical-fiber network in described fibre distribution frame and described backbone optical cable terminal unit is extracted, and by the backbone optical cable side Cheng Duan of the OLT side of described first jumping fiber and described second jumping fiber;
E. the optical branching device of at least one optical network unit of described target light network with described existing optical-fiber network is connected.
On the other hand, the invention provides a kind of from existing optical-fiber network coexisting and evolution system to target light network, comprise optical line terminal and the optical network unit of the optical line terminal of existing optical-fiber network, optical network unit and fibre distribution frame and target light network, wherein, wavelength division multiplexer is configured with, for the service wavelength of described existing optical-fiber network and target light network being coupled in an optical fiber in the fibre termination unit of described fibre distribution frame.
As shown from the above technical solution, coexisting and evolution method and system from existing optical-fiber network to target light network provided by the invention, by wavelength division multiplexer integrated in the fibre termination unit of the fibre distribution frame of existing optical-fiber network, not only can the service wavelength of existing optical-fiber network and target light network be coupled in an optical fiber, thus be implemented to coexisting and evolution of target light network, and be integrated in the fibre termination unit of fibre distribution frame due to passive wavelength division multiplexer, without the need to the optical fiber of cloth amplification quantity repeatedly in evolution process, be easy to operation, farthest can reduce the consumption of implementation amount in evolution process and fiber optic materials, efficiency is also improved while cost-saving.
Accompanying drawing explanation
Two of different business wavelength kinds of optical-fiber networks are coupled in prior art to realize schematic diagram in an optical fiber by Fig. 1;
Fig. 2 be coexisting from existing optical-fiber network to target light network in prior art and evolution method realize schematic diagram;
Fig. 3 is the present invention's coexisting and the flow chart of evolution method from existing optical-fiber network to target light network;
Fig. 4 be the present invention from existing optical-fiber network to target light network coexist and evolution method the first embodiment realize schematic diagram;
Fig. 5 and Fig. 6 be respectively the present invention from existing optical-fiber network to target light network coexist and evolution method the second embodiment two kinds of fibre distribution frame realize schematic diagram.
Embodiment
First be the present invention's coexisting and the flow chart of evolution method from existing optical-fiber network to target light network with reference to figure 3, Fig. 3.As shown in Figure 3, described method comprises the steps:
S10, is integrated in wavelength division multiplexer in the fibre termination unit of the fine distributing frame of described existing optical networks.
Wherein, described fibre distribution frame can also be main distribution frame for fiber.Described wavelength division multiplexer can be passive wavelength division multiplexer.The device that described wavelength division multiplexer is well known to those skilled in the art, the specific operation process be integrated in by wavelength division multiplexer in described fibre termination unit also belongs to content well-known to those skilled in the art, after integrated, the input/output terminal of described wavelength division multiplexer and the input/output terminal of described fibre termination unit unite two into one.
S11, is connected the optical line terminal of described target light network with the first wave length input of described fibre termination unit in described fibre distribution frame.Particularly, be that the PON interface of the optical line terminal of described target light network is connected with the first wave length input of described fibre termination unit.
Wherein, wavelength division multiplexer optical device has two or more inputs and an output usually, and the fibre termination unit of described integrated wavelength division multiplexer has two groups or more wavelength input and one group of wavelength output usually.In the implementation process of step S11, need between the optical line terminal and the fibre termination unit of integrated wavelength division multiplexer of described target light network, to lay jumping fiber by operating personnel, and be connected with the first wave length input of the fibre termination unit of integrated wavelength division multiplexer.
S12, the first jumping fiber is laid by between the optical line terminal of described existing optical-fiber network and the second wave length input of described fibre termination unit in described fibre distribution frame, and the OLT side of described first jumping fiber wouldn't Cheng Duan, lay the second jumping fiber between backbone optical cable terminal unit on described fibre distribution frame and the output of described fibre termination unit, and the backbone optical cable side of described second jumping fiber wouldn't Cheng Duan.Particularly, be lay the first jumping fiber by between the PON interface of the optical line terminal of described existing optical-fiber network and the second wave length input of described fibre termination unit.
S13, extracts the original jumping fiber between the optical line terminal of existing optical-fiber network in described fibre distribution frame and described backbone optical cable terminal unit, and by the backbone optical cable side Cheng Duan of the OLT side of described first jumping fiber and described second jumping fiber.
For step S11, S12, S13, relevant cloth give out light jumping fiber, become end and extract the concrete operation method of light jumping fiber, all belong to content well-known to those skilled in the art, so repeat no more herein.
S14, is connected the optical branching device of at least one optical network unit of described target light network with described existing optical-fiber network.
Namely existing optical-fiber network and target light network coexisting in same optical distribution network is achieved by above-mentioned steps, and can optical network unit simultaneously with existing optical-fiber network and target light network under the same optical branching device of this optical distribution network.Wherein, the number of described optical network unit is according to implementing to coexist and the situation such as the place of evolution and user and determining.And be integrated in the fibre termination unit of fibre distribution frame due to wavelength division multiplexer, make to simplify operating process in evolution process, decrease the consumption of optical fiber cable.
After step s 14, described method also comprises: under same optical branching device, after the optical network unit of described target light network is all used, removes all jumping fibers of the optical line terminal PON interface of existing optical-fiber network in described fibre distribution frame; Under whole optical line terminal of described existing optical-fiber network, after the whole evolution of user to the optical network unit of described target light network, remove the optical line terminal of described existing optical-fiber network and all optical cables thereof.Namely the evolution from existing optical-fiber network to target light network is thoroughly achieved after dismounting.
In embodiments of the present invention, also it should be noted that, the present invention coexists and comprises existing optical-fiber network with the covering scope of evolution and take the different all combined situation of service wavelength scope from target light network, if GPON and EPON is to 10G GPON; GPON, EPON, 10G EPON, 10G GPON, to WDM PON etc., will not enumerate herein.
Following reference diagram 4, Fig. 4 be the present invention from existing optical-fiber network to target light network coexist and evolution method the first embodiment realize schematic diagram.In the diagram, described existing optical-fiber network is for GEPON, described target light network schematically shows the present invention that composition graphs 3 above describes coexisting and each step of evolution method from existing optical-fiber network to target light network for NGPON, Fig. 4, no longer repeated description herein.
In addition, can also be learnt by Fig. 4, the present invention from existing optical-fiber network to target light network coexisting and evolution system comprises the optical line terminal of existing optical-fiber network, the optical line terminal of optical network unit and fibre distribution frame and target light network and optical network unit, wherein, wavelength division multiplexer is integrated with, for the service wavelength of described existing optical-fiber network and target light network being coupled in an optical fiber in the fibre termination unit of described fibre distribution frame.It is different that described existing optical-fiber network and target light network take service wavelength scope.
In embodiments of the present invention, after from existing optical-fiber network to the overall evolution of target light network, the fibre termination unit of integrated wavelength division multiplexer can be removed, still continue to continue to employ, and can be used for such as radio and television CATV service access, or for optical network line testing and diagnosing etc., which also saves operating procedure and equipment cost.
Fig. 5 and Fig. 6 be respectively the present invention from existing optical-fiber network to target light network coexist and evolution method the second embodiment two kinds of fibre distribution frame realize schematic diagram.In Figure 5, the fibre termination unit of described integrated wavelength division multiplexer has four groups of wavelength inputs and one group of wavelength output, so after achieving the evolution that coexists from existing optical-fiber network to target light network, other wavelength input access CATV or as test channel of the fibre termination unit of integrated wavelength division multiplexer can also be utilized in fibre distribution frame, it is convenient more flexibly to use, without the need to using extra equipment.In another embodiment, as shown in Figure 6, fibre termination unit has three wavelength inputs, and one of them both can access CATV also can as test channel.In a word, can process according to the actual conditions at the demand of user and scene.
In sum, coexisting and evolution method and system from existing optical-fiber network to target light network of the present invention, by configuring wavelength division multiplexer in the fibre termination unit of the fibre distribution frame of existing optical-fiber network, the service wavelength of existing optical-fiber network and target light network is coupled in an optical fiber, thus realize coexisting and evolution of optical-fiber network, and without the need to the optical fiber of cloth amplification quantity repeatedly in evolution process, farthest can reduce the consumption of implementation amount in evolution process and fiber optic materials, actual operation is stronger.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in previous embodiment, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (3)
1., from existing optical-fiber network coexisting and an evolution method to target light network, it is characterized in that, comprise the steps:
A. wavelength division multiplexer is integrated in the fibre termination unit of the fine distributing frame of described existing optical networks;
B. in described fibre distribution frame, the optical line terminal of described target light network is connected with the first wave length input of described fibre termination unit;
C. in described fibre distribution frame, the first jumping fiber is laid by between the optical line terminal of described existing optical-fiber network and the second wave length input of described fibre termination unit, and the OLT side of described first jumping fiber wouldn't Cheng Duan, lay the second jumping fiber between backbone optical cable terminal unit on described fibre distribution frame and the output of described fibre termination unit, and the backbone optical cable side of described second jumping fiber wouldn't Cheng Duan;
D. the original jumping fiber between the optical line terminal of existing optical-fiber network in described fibre distribution frame and described backbone optical cable terminal unit is extracted, and by the backbone optical cable side Cheng Duan of the OLT side of described first jumping fiber and described second jumping fiber;
E. the optical branching device of at least one optical network unit of described target light network with described existing optical-fiber network is connected.
2. method according to claim 1, is characterized in that, described at least one optical network unit of described target light network is connected with the optical branching device of described existing optical-fiber network after, described method also comprises:
Under same optical branching device, after the optical network unit of described target light network is all used, remove all jumping fibers of the optical line terminal of existing optical-fiber network in described fibre distribution frame;
Under whole optical line terminal of described existing optical-fiber network, after the whole evolution of user to the optical network unit of described target light network, remove the optical line terminal of described existing optical-fiber network and all optical cables thereof.
3. the method according to any one of claim 1-2, is characterized in that, it is different that described existing optical-fiber network and target light network take service wavelength scope.
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| CN2822040Y (en) * | 2005-10-18 | 2006-09-27 | 深圳飞通光电股份有限公司 | Light module for light line terminal |
| CN101877798A (en) * | 2009-04-30 | 2010-11-03 | 中兴通讯股份有限公司 | Coexistence system of existing passive optical network and next generation passive optical network and updating method |
| CN102064904A (en) * | 2009-11-12 | 2011-05-18 | 华为技术有限公司 | Service transmission method, system and device of multi-service shared optical distribution network (ODN) |
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| KR100532307B1 (en) * | 2003-03-17 | 2005-11-29 | 삼성전자주식회사 | Wavelength Division Multiplexing - Passive Optical Network for Integrating Broadcasting and Telecommunication |
| CN2636504Y (en) * | 2003-09-04 | 2004-08-25 | 深圳市深大长通电信技术有限公司 | Double circulating coupling single fiber double wave four phase transmission inverter |
| KR100707244B1 (en) * | 2004-11-12 | 2007-05-02 | 한국정보통신대학교 산학협력단 | Apparatus and method for protection of wavelength division multiplexed passive optical network |
| CN101252393B (en) * | 2008-04-01 | 2012-05-09 | 武汉光迅科技股份有限公司 | Optic cable automatic monitoring system with optical fiber automatic switch unit |
| CN201464689U (en) * | 2009-07-03 | 2010-05-12 | 英通达安费诺光纤技术(深圳)有限公司 | Closure device of branching unit |
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| CN2822040Y (en) * | 2005-10-18 | 2006-09-27 | 深圳飞通光电股份有限公司 | Light module for light line terminal |
| CN101877798A (en) * | 2009-04-30 | 2010-11-03 | 中兴通讯股份有限公司 | Coexistence system of existing passive optical network and next generation passive optical network and updating method |
| CN102064904A (en) * | 2009-11-12 | 2011-05-18 | 华为技术有限公司 | Service transmission method, system and device of multi-service shared optical distribution network (ODN) |
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