CN1214551C - Optical fiber looped network system and optical add-drop multiplexing module and upgrade expanding method thereof - Google Patents
Optical fiber looped network system and optical add-drop multiplexing module and upgrade expanding method thereof Download PDFInfo
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- CN1214551C CN1214551C CNB021343209A CN02134320A CN1214551C CN 1214551 C CN1214551 C CN 1214551C CN B021343209 A CNB021343209 A CN B021343209A CN 02134320 A CN02134320 A CN 02134320A CN 1214551 C CN1214551 C CN 1214551C
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Abstract
The present invention relates to an optical fiber looped network system which comprises at least one bidirectional transmission optical-fiber loop chain, a plurality of optical division insertion multiplexing nodes arranged in the optical-fiber loop chain and a plurality of synchronous digital devices connected with the optical-fiber loop chain. The present invention is characterized in that each optical division insertion multiplexing node is composed of two optical division insertion multiplexing modules; the upper wave port and the lower wave port of each optical division insertion multiplexing module are respectively and independently connected with a receiving end and a transmitting end of the main channel or the standby channel of synchronous digital hierarchy equipment at the position of the corresponding module. Due to the adoption of an optical division insertion multiplexing module structure led out with the upper and the lower wave punch-through ports which are used as upgrade expansion ports, the adjacent optical division insertion multiplexing modules can be connected in series, so the present invention solves the problem of service interruption when a dual-fiber or a four-fiber multiplexing section protection switching ring is upgraded and expanded.
Description
Technical field
The invention belongs to the optical communication technique field, particularly relate to optical fiber ring network structure and OADM module (OADM) and the upgrade expanding method thereof of synchronous digital hierarchy (SDH) equipment when adopting two fibres or four fiber complex section protection to switch looped network that inserts in the metropolitan area wavelength-division system.
Background technology
In the present two fibres or 4F Ring optical network structure, a large amount of OADM nodes that use carry out professional Optical Add Drop Multiplexer, the structure of common OADM unit as shown in Figure 1, mainly include down ripple part, go up the ripple part, some last ripple ports that is connected with SDH equipment, atm device or router reach under ripple port, the multi-wavelength signals input port and the output port that are connected with optical fiber ring network, wherein descend the output and the last ripple part input serial connection of ripple part, and the break-through port that does not have to go up ripple part and following ripple part is drawn.In the process that realizes two fine looped network protections, owing to all need upper and lower year business at both direction, therefore in an OADM type node, must use two ADM unit, as shown in Figure 2, wherein an OADM unit is used for ripple on downward ripple in west and the east orientation, will carry out by the west at the light signal that our station does not need upper and lower year to the break-through to east orientation simultaneously; The 2nd OADM unit is used under the east orientation upwards ripple of ripple and west, will carry out at the light signal that our station does not need upper and lower year simultaneously by east orientation to western to break-through.In two fine ring network structures, its syndeton as shown in Figure 3, two different loops of two fine rings are respectively by two independent O ADM unit.In the process that realizes the protection of 4F Ring net, the connected mode in the connected mode of OADM unit and the two fine looped networks is similar, just the OADM unit than pair fine looped networks many one times, its syndeton is as shown in Figure 4.In above-mentioned two kinds of syndetons, two different loops of two fine rings are respectively by two independent O ADM unit; Four different loops of 4F Ring are respectively by four independent O ADM unit.Use the upgrading of connecting of the OADM unit of this structure; during dilatation; the input or the output port that are merely able to OADM on the disconnecting link; the input port of the OADM of other different wave length is serially connected in the output port of the OADM that has existed or the output port of the OADM of other different wave length is serially connected in the input port of the OADM that has existed; therefore in the syndeton of this network node; for two fibres or 4F Ring net; the upgrade expanding as long as one of them OADM unit breaks down or connects all will cause two fibres of SDH or four fiber complex section to protect the service disconnection of rotating loop.Therefore using a disadvantage of common OADM unit connected mode in two fibres or 4F Ring net is for wave-division device; if optical layer protective is not provided; and the wave-division device that inserts is the SDH equipment that adopts two fibres or four fiber complex section protection rotating loop; any OADM unit in Fig. 2 damages, changes or when connecting upgrade expanding, all will cause professional interruption on two fibres of SDH or the four fiber complex section protection rotating loop so.And when using common OADM syndeton to carry out upgrade expanding, will have influence on the Insertion Loss of the upper and lower ripple that has existed, be unfavorable for the power budget of whole network system, and the last ripple Insertion Loss during upgrade expanding, the ripple Insertion Loss will increase also down.
Summary of the invention
The objective of the invention is problem at above-mentioned existence; the SDH business of two fibres or four fiber complex section protection rotating loop is not provided when providing a kind of metropolitan area wavelength-division system that can solve two fibres or 4F Ring net to carry out upgrade expanding or change the OADM unit; and when carrying out the upgrade expanding of wave-division device; do not influence the power budget of the wavelength of bearer service, make littler optical fiber ring network system and the division multiplexing optical module and the upgrade expanding method thereof of Insertion Loss of the upper and lower ripple of OADM node as far as possible.
Technical scheme of the present invention is achieved in that
On the one hand, a kind of optical fiber ring network system, the optical fiber loop chain that comprises at least one group of transmitted in both directions, be arranged on a plurality of Optical Add Drop Multiplexer type nodes and a plurality of synchronous digital series device that is connected with the optical fiber loop chain in the optical fiber loop chain, it is characterized in that each Optical Add Drop Multiplexer type node is composed in series by two OADM modules respectively, wherein the following ripple part break-through output port of first OADM module is connected with the last ripple part break-through input port of second OADM module, and the output port of the input port of first OADM module and second OADM module respectively with the west to the optical fiber loop chain be connected, the following ripple part break-through output port of second OADM module is connected with the last ripple part break-through input port of first OADM module, and the output port of the input port of second OADM module and first OADM module is connected with the optical fiber loop chain of east orientation respectively, and the last ripple port of each OADM module and following ripple port respectively with the main channel of the synchronous digital series device of position or the receiving terminal and the transmitting terminal separate connection of passage fully.
The following ripple port of above-mentioned first OADM module is a west ripple end downwards, its main channel with the synchronous digital series device of position is connected, the last ripple port of this OADM module is a upwards ripple end of west, and it is connected with the main channel transmitting terminal of the synchronous digital series device of position; The following ripple port of above-mentioned second OADM module is a ripple end under the east orientation, its passage receiving terminal that is equipped with the synchronous digital equipment of position is connected, the last ripple port of this OADM module is a ripple end on the east orientation, and its passage transmitting terminal that is equipped with the synchronous digital series device of position is connected.
On the other hand, a kind of above-mentioned optical fiber ring network system includes the ripple part with OADM module, following ripple part, the multi-wavelength signals input port and the output port that are connected with the optical fiber loop chain, several last ripple ports that are connected with synchronous digital series device and following ripple port, its characteristics are also to be provided with the last ripple part break-through input port that is used to export the following ripple part break-through output port of multi-wavelength signals and is used to import multi-wavelength signals, input port, each time ripple port reaches down, and ripple part break-through output port partly is connected output port respectively with following ripple, ripple port and last ripple part break-through input port partly are connected with last ripple respectively on each.
Again on the one hand, the upgrade expanding method of described optical fiber ring network system may further comprise the steps:
1), first OADM module in the Optical Add Drop Multiplexer type node in the described optical fiber ring network of the disconnection system and the connector of second OADM module;
2), between first OADM module that disconnects and second OADM module serial connection the 3rd OADM module and the 4th OADM module, wherein the following ripple part break-through output port of first OADM module is connected the input port of the 3rd OADM module; The last ripple part break-through input port of first OADM module connects the delivery outlet of the 3rd OADM module, and the following ripple part break-through output port of second OADM module connects the input port of the 4th OADM module; The last ripple part break-through input port of second OADM module connects the delivery outlet of the 4th OADM module; The following ripple part break-through output port of the 3rd OADM module connects the last ripple part break-through input port of the 4th OADM module, and the last ripple part break-through input port of the 3rd OADM module connects the following ripple part break-through output port of the 4th OADM module.
The present invention is owing to adopt the OADM module structure that leads to upper and lower ripple break-through port, utilize its upper and lower ripple break-through port to realize serial connection between the adjacent light add-drop multiplexing module as the upgrade expanding mouth dexterously, thereby utilized the following ripple part of first OADM module and the last ripple of second OADM module partly to constitute an OADM unit together, as the west to the loop passage that arrives east orientation; Simultaneously the last ripple part of the following ripple part of second OADM module and first OADM module constitutes another OADM unit together, as east orientation arrive western to the loop passage.Make two fine rings all pass through the first and second OADM unit, be about to an OADM veneer be defined as the west to, an OADM veneer is defined as east orientation, if carrying is the multiplex section protection looped network of SDH, the west that the receiving end of the main channel wiring board of SDH equipment is connected on this OADM website is ripple downwards, the west that the making a start of the wiring board of main channel is connected on this OADM website ripple that makes progress; And the receiving end that is equipped with the port line plate of SDH equipment is connected on ripple under the east orientation of this OADM website, is equipped with ripple on the east orientation that is connected on this OADM website of making a start of wiring board of passage; If change one of them OADM module or upgrade expanding OADM module, primary channel always has one in work, therefore can not interrupt the MSP loop; If according to common OADM module; east to the west to circuit use an OADM veneer; an OADM veneer is used to the circuit to east orientation in the west; like this for two fibres of the SDH of carrying or four fiber complex section protection looped network; the transmitting-receiving of the main channel wiring board of SDH equipment always is connected on two OADM modules; the transmitting-receiving that is equipped with port line equally also is to be connected on two OADM modules; change the MSP looped network that any OADM veneer or upgrade expanding all will interrupt SDH like this; so this syndeton that the present invention takes is for the SDH business that adopts two fibres or four fiber complex section protection rotating loop; in the replacing of carrying out the OADM unit; during upgrade expanding, do not need interrupting service.Problem of service interruption when well having solved two fibres or multiplex section protection exchanging ring and carrying out upgrade expanding.And can't influence the power budget of the wavelength of bearer service and the upper and lower ripple Insertion Loss that has existed during upgrade expanding, the upper and lower ripple Insertion Loss when the upper and lower ripple Insertion Loss when this novel connected mode is carried out upgrade expanding simultaneously will be than common upgrade expanding is little.
Describe basic structure of the present invention and operation principle in detail below in conjunction with accompanying drawing:
Description of drawings
Fig. 1 is the basic structure schematic diagram of existing OADM module;
Fig. 2 is the syndeton schematic diagram of existing OADM module;
Fig. 3 is the existing positional structure schematic diagram of OADM module in two fine looped networks;
Fig. 4 is the existing positional structure schematic diagram of OADM module in the 4F Ring net;
Fig. 5 is the existing positional structure schematic diagram of OADM module when upgrade expanding;
Fig. 6 is the basic structure schematic diagram of OADM module of the present invention;
Fig. 7 is the syndeton schematic diagram of OADM module of the present invention;
Fig. 8 is the positional structure schematic diagram of OADM module of the present invention in two fine looped networks;
Fig. 9 is the positional structure schematic diagram of OADM module of the present invention in the 4F Ring net.
Figure 10 is the positional structure schematic diagram of Optical Add Drop Multiplexer mould of the present invention port when upgrade expanding.
Embodiment
As shown in Figure 6, a kind of OADM module of the present invention, include the ripple part, following ripple part, the multi-wavelength signals input port and the output port that are connected with the optical fiber loop chain, several last ripple ports that are connected with synchronous digital series device and following ripple port, its characteristics are also to be provided with and are used to export the following ripple part break-through output port of multi-wavelength signals and are used to import ripple part break-through input port on the multi-wavelength signals, input port, each time ripple port reaches down, and ripple part break-through output port partly is connected output port respectively with following ripple, ripple port and last ripple part break-through input port partly are connected with last ripple respectively on each.Wherein for helping the serial connection of two OADM modules, above-mentioned multi-wavelength signals input port and multi-wavelength signals output port and following ripple part break-through output port and last ripple part break-through input port are distributed in the both sides of described OADM module.
Below in the description about the optical fiber ring network system, for more directly perceived, clearly explain the trend of optical fiber loop chain and position relation, in the following description with in the loop chain in shown in the relevant accompanying drawing be defined as from left to right the west to, then being defined as east orientation from right to left explains, certainly, this definition is relative, and promptly both can exchange, and mainly is according to convenience of describing and east and the west of defining so directly perceived in the present embodiment.
A kind of optical fiber ring network of the present invention system, the optical fiber loop chain 100 that comprises at least one group of transmitted in both directions, be arranged on a plurality of Optical Add Drop Multiplexer type nodes 200 and a plurality of synchronous digital series device 300 that is connected with optical fiber loop chain 100 in the optical fiber loop chain 100, the optical fiber loop chain 100 of indication can be the bidirectional optical fiber loop chain in as shown in Figure 8 the bidirectional optical fiber loop network system in the present embodiment, this moment, each Optical Add Drop Multiplexer type node 200 was respectively by two OADM modules 201,202 compose in series, as shown in Figure 7, the following ripple part break-through output port of first OADM module 201 is connected with the last ripple part break-through input port of second OADM module 202, and the output port of the input port of first OADM module 201 and second OADM module 202 respectively with the west to optical fiber loop chain 101 be connected, the following ripple part break-through output port of second OADM module 202 is connected with the last ripple part break-through input port of first OADM module 201, and the output port of the input port of second OADM module 202 and first OADM module 201 is connected with the optical fiber loop chain 102 of east orientation respectively, each OADM module 201 of while, 202 last ripple port and following ripple port respectively with the main channel of the synchronous digital series device 300 of position or the receiving terminal and the transmitting terminal separate connection of passage fully, this moment, the following ripple port of first OADM module 201 was a west ripple end downwards, its main channel with the synchronous digital series device 300 of position is connected, the last ripple port of this OADM module is a upwards ripple end of west, and its main channel transmitting terminal with the synchronous digital series device 300 of position is connected; The following ripple port of above-mentioned second OADM module 202 is a ripple end under the east orientation, its passage receiving terminal that is equipped with the synchronous digital equipment 300 of position is connected, the last ripple port of this OADM module is a ripple end on the east orientation, and its passage transmitting terminal that is equipped with the synchronous digital series device 300 of position is connected.Optical fiber loop chain 100 described in the present embodiment also can be the four-way optical fiber loop chain in as shown in Figure 9 the four-way optical fiber ring network system, this moment, each Optical Add Drop Multiplexer type node was made up of four OADM modules, also be to compose in series in each two-way optical fiber loop chain wherein by two OADM modules, its syndeton is identical with the Optical Add Drop Multiplexer type node in two fine loop network systems, no longer describes in detail herein.
While, optical fiber ring network of the present invention system carried out upgrade expanding as long as disconnect each break-through port of two smooth multiplexer modules, enter two OADM modules of other wavelength of series connection are promptly passable, its syndeton as shown in figure 10, its concrete method is: disconnect first OADM module 201 and second OADM module 202 earlier, the 3rd OADM module 203 and the 4th OADM module 204 are advanced in series connection therebetween then, the following ripple part break-through output port of first OADM module 201 are connected the input port of the 3rd OADM module 203; The last ripple part break-through input port of first OADM module 201 connects the delivery outlet of the 3rd OADM module 201, and the following ripple part break-through output port of second OADM module 202 connects the input port of the 4th OADM module 204; The last ripple part break-through input port of second OADM module 202 connects the delivery outlet of the 4th OADM module 204; The following ripple part break-through output port of the 3rd OADM module 203 connects the last ripple part break-through input port of the 4th OADM module 204; The last ripple part break-through input port of the 3rd OADM module 203 connects the following ripple part break-through output port of the 4th OADM module 204.More upgrade expanding series connection can and the like.
Claims (5)
1, a kind of optical fiber ring network system, the optical fiber loop chain that comprises at least one group of transmitted in both directions, be arranged on a plurality of Optical Add Drop Multiplexer type nodes and a plurality of synchronous digital series device that is connected with the optical fiber loop chain in the optical fiber loop chain, it is characterized in that each Optical Add Drop Multiplexer type node is composed in series by two OADM modules respectively, wherein the following ripple part break-through output port of first OADM module is connected with the last ripple part break-through input port of second OADM module, and the output port of the input port of first OADM module and second OADM module respectively with the west to the optical fiber loop chain be connected, the following ripple part break-through output port of second OADM module is connected with the last ripple part break-through input port of first OADM module, and the output port of the input port of second OADM module and first OADM module is connected with the optical fiber loop chain of east orientation respectively, and the last ripple port of each OADM module and following ripple port respectively with the main channel of the synchronous digital series device of position or the receiving terminal and the transmitting terminal separate connection of passage fully.
2, optical fiber ring network according to claim 1 system, the following ripple port that it is characterized in that above-mentioned first OADM module is the downward ripple end in west, its main channel with the synchronous digital series device of position is connected, the last ripple port of this OADM module is a upwards ripple end of west, and it is connected with the main channel transmitting terminal of the synchronous digital series device of position; The following ripple port of above-mentioned second OADM module is a ripple end under the east orientation, its passage receiving terminal that is equipped with the synchronous digital equipment of position is connected, the last ripple port of this OADM module is a ripple end on the east orientation, and its passage transmitting terminal that is equipped with the synchronous digital series device of position is connected.
3, the described optical fiber ring network of a kind of claim 1 system OADM module, include the ripple part, following ripple part, the multi-wavelength signals input port and the output port that are connected with the optical fiber loop chain, several last ripple ports that are connected with synchronous digital series device and following ripple port, it is characterized in that also being provided with the last ripple part break-through input port that is used to export the following ripple part break-through output port of multi-wavelength signals and is used to import multi-wavelength signals, input port, each time ripple port reaches down, and ripple part break-through output port partly is connected output port respectively with following ripple, ripple port and last ripple part break-through input port partly are connected with last ripple respectively on each.
4, OADM module according to claim 3 is characterized in that above-mentioned multi-wavelength signals input port and multi-wavelength signals output port and following ripple part break-through output port and last ripple part break-through input port are distributed in the both sides of OADM module respectively.
5, the upgrade expanding method of the described optical fiber ring network of a kind of claim 1 system is characterized in that may further comprise the steps:
1), first OADM module in the Optical Add Drop Multiplexer type node in the described optical fiber ring network of the disconnection system and the connector of second OADM module;
2), between first OADM module that disconnects and second OADM module serial connection the 3rd OADM module and the 4th OADM module, wherein the following ripple part break-through output port of first OADM module is connected the input port of the 3rd OADM module; The last ripple part break-through input port of first OADM module connects the delivery outlet of the 3rd OADM module, and the following ripple part break-through output port of second OADM module connects the input port of the 4th OADM module; The last ripple part break-through input port of second OADM module connects the delivery outlet of the 4th OADM module; The following ripple part break-through output port of the 3rd OADM module connects the last ripple part break-through input port of the 4th OADM module, and the last ripple part break-through input port of the 3rd OADM module connects the following ripple part break-through output port of the 4th OADM module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021343209A CN1214551C (en) | 2002-07-08 | 2002-07-08 | Optical fiber looped network system and optical add-drop multiplexing module and upgrade expanding method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021343209A CN1214551C (en) | 2002-07-08 | 2002-07-08 | Optical fiber looped network system and optical add-drop multiplexing module and upgrade expanding method thereof |
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| CN1467930A CN1467930A (en) | 2004-01-14 |
| CN1214551C true CN1214551C (en) | 2005-08-10 |
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| CNB021343209A Expired - Lifetime CN1214551C (en) | 2002-07-08 | 2002-07-08 | Optical fiber looped network system and optical add-drop multiplexing module and upgrade expanding method thereof |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1330118C (en) * | 2004-02-23 | 2007-08-01 | 华为技术有限公司 | Distributed base stations and data interactive method |
| CN100338886C (en) * | 2004-04-09 | 2007-09-19 | 中兴通讯股份有限公司 | Flashing method of non-service cut-off of light transmission of link network |
| CN100438363C (en) * | 2004-09-30 | 2008-11-26 | 华为技术有限公司 | Bandwidth updating method and control flow for synchronous digital system |
| CN101145870B (en) * | 2007-07-31 | 2012-07-18 | 中兴通讯股份有限公司 | A method for non-interrupted service expansion in optical loop network |
| CN106258014B (en) | 2015-04-16 | 2018-12-07 | 华为技术有限公司 | A kind of method of signal processing in add-drop multiplexer and add-drop multiplexer |
| CN105049112B (en) * | 2015-06-03 | 2018-01-02 | 武汉邮电科学研究院 | Wavelength-division access protection ring based on supervisory wavelength |
| CN115514443A (en) * | 2021-06-22 | 2022-12-23 | 华为技术有限公司 | Communication apparatus, communication method, and communication system |
| CN114710201B (en) * | 2022-04-24 | 2023-10-03 | 中国联合网络通信集团有限公司 | Configuration method for sharing OADM of core aggregation node of optical transmission network |
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2002
- 2002-07-08 CN CNB021343209A patent/CN1214551C/en not_active Expired - Lifetime
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