CN101599797A - Automatic dispersion compensation adjustment triggering method and device - Google Patents
Automatic dispersion compensation adjustment triggering method and device Download PDFInfo
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- CN101599797A CN101599797A CN 200810085947 CN200810085947A CN101599797A CN 101599797 A CN101599797 A CN 101599797A CN 200810085947 CN200810085947 CN 200810085947 CN 200810085947 A CN200810085947 A CN 200810085947A CN 101599797 A CN101599797 A CN 101599797A
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Abstract
The invention discloses a kind of automatic dispersion compensation adjustment triggering method and device, wherein, this method comprises: the service path situation of path switching controller detection system, and the alert situation of receiver detection system; The service path situation that detects system at the path switching controller changes and receiver detects under the situation of the alarm that is caused by the chromatic dispersion deterioration, and receiver triggers the automatic dispersion compensation adjustment.The application of the invention can effectively realize the correct adjustment of dynamic dispersion compensation function, has solved the irrational problem of adjustment choose opportunities.
Description
Technical field
The present invention relates to optical communication field, and especially, relate to a kind of automatic dispersion compensation adjustment triggering method and device.
Background technology
Usually, optical communication system comprises sender unit and signal receiving device, and the framework of system can be as depicted in figs. 1 and 2.
In Fig. 1, sender unit A is connected to signal receiving device C by transmission path B.In Fig. 2, sender unit A is connected to signal receiving device D by transmission path B and transmission path C, and wherein, transmission path B is the backup path of transmission path C, and perhaps transmission path C is the backup path of transmission path B.
The dispersion compensation technology is a kind of performance optimization technology of taking in the high-speed high capacity optical communication system.
Than idling slow speed system, the effect of dispersion in the High Speed System can be serious a lot, and for receiver, its dispersion tolerance but can correspondingly reduce, and for example, the chromatic dispersion of 40G system is held tolerance limit and is about 1/16 of 10G system.Therefore, high speed optical communication system generally needs comparatively accurate chromatic dispersion compensating function.
Dispersion compensation can use special optical fiber to carry out in transmission course, and it is specific tuning also can to use adjustable chromatic dispersion compensator spare to carry out at receiving terminal.Usually, the latter can provide the dispersion compensation adjustment of channel layer, is necessary therefore.Device is adjusted in the chromatic dispersion that hereinafter described chromatic dispersion compensating function refers on the receiver.Chromatic dispersion compensating function considers that to all combined factors that cause chromatic dispersion (factor that may influence chromatic dispersion comprises transmission path, the transmission temperature, even the inhomogeneities of dispersion compensation device self etc.), in conjunction with other reception optimization tool (optimizing) such as level adaptive reception, according to certain strategy and algorithm adjustment, obtain the most suitable receiving terminal chromatic dispersion adjusted value when prepass.
At present, be the opportunity that chromatic dispersion is adjusted in the problem of carrying out being faced when dispersion compensation is adjusted.Usually, after system entered steady operational status, dispersion values did not need significantly to adjust, and simply remained unchanged or meticulous adjustment gets final product.But serious deterioration occurs when the system transmissions performance, and even when detecting signal alarm (for example, LOF etc.), will run into the problem of whether adjusting current dispersion values.Might be owing to following two kinds of reasons cause system alarm signal to occur this moment, promptly, (1) physical cause on system's current path has caused alarm, for example, light inlet watt level and signal source itself go wrong etc., in any case adjust the dispersion values of receiver this moment, all can not eliminate this alarm; (2) path change has taken place in the system before the whole receiver, promptly, what this receiver received is the light signal of another path transmission, its chromatic dispersion accumulated value may be because transmission environment, the difference that optical fiber is selected and difference, just may find out correct service signal by restarting the chromatic dispersion adjustment in this case, thereby remove alarm.
In correlation technique, mainly adopt following scheme to handle alarm:
Method (1), in any case, as long as system detects alarm, just restart chromatic dispersion and adjust strategy.The shortcoming of this scheme is: if this alarm only be system instantaneous alarm (for example, the LOF of Chan Shenging (LOF) once in a while) words, the chromatic dispersion Adjustment System also can be started working, like this, when in fact there has not been alarm in system, receiver may be transferred to dispersion values and depart from the far place of normal value, makes that system is current can't use; In addition, the time that searches exact value owing to chromatic dispersion is long, generally reaches about a few minutes, and system is interior during this period of time again may can't work owing to this artificial adjustment strategy, therefore very unfavorable to the normal operation of system;
Method (2), opposite with method (1), as long as detect alarm, just stop chromatic dispersion and adjust strategy, treat to recover former dispersion values again after alarm disappears.The benefit of doing like this is to avoid because artificial active adjustment causes the down time lengthening of system, its shortcoming is: if the words of the alarm that causes owing to path change, system can't enter chromatic dispersion forever automatically and adjust state, remove the unartificial chromatic dispersion adjustment order that issues, therefore can act on behalf of adverse effect to the normal operation of system equally.
Method (3) is considered method (1) and method (2) both of these case simultaneously, before receiver is started working, writes current implementation strategy in certain storage area of receiving system.If present receiving machine can not run into the situation of up-stream system generation path switching, fixing manner of execution (2) then, on the contrary then can select manner of execution (1).The shortcoming of doing like this is to determine in advance the environment for use of this receiving system, and this environment for use system is ignorant dispatching from the factory before often, the setting of often also having no way of; In addition,,, can't avoid wrong situation when multipath is switched, occurring, therefore still can not tackle the problem at its root though this strategy can improve adaptability than method (1) and method (2).
Therefore, there is the problem that system suitability is looked into, operational efficiency is low that rationally to determine the triggering opportunity of chromatic dispersion adjustment and cause in the correlation technique.
Summary of the invention
Consider the problems referred to above and make the present invention, for this reason, main purpose of the present invention is to provide a kind of automatic dispersion compensation adjustment trigger mechanism, to solve in the correlation technique problem that system suitability is looked into, operational efficiency is low that causes opportunity owing to the triggering that can not rationally determine the chromatic dispersion adjustment.
According to embodiments of the invention, provide a kind of automatic dispersion compensation adjustment triggering method.
This method comprises: the service path situation of path switching controller detection system, and the alert situation of receiver detection system; The service path situation that detects system at the path switching controller changes and receiver detects under the situation of the alarm that is caused by the chromatic dispersion deterioration, and receiver triggers the automatic dispersion compensation adjustment.
Wherein, before triggering the automatic dispersion compensation adjustment, this method may further include: connect between path switching controller and receiver, wherein, the connection of foundation is used to transmit the message that expression service path situation changes.
And, detect under the situation that the service path situation of system changes at the path switching controller, this method can further comprise: the path switching controller will represent that by the connection of setting up message that the service path situation changes is notified to receiver via the connection of foundation.
Afterwards, receiver is according to the message and the detected alarm triggered automatic dispersion compensation adjustment that is caused by the chromatic dispersion deterioration that receive.
According to another embodiment of the present invention, provide a kind of automatic dispersion compensation adjustment trigger equipment.
This device comprises: the path switching controller, be connected to receiver, and be used for the service path situation of detection system, and will represent that under the situation that the service path situation that detects system changes the message informing that the service path situation changes gives receiver; Receiver is used for the alert situation of detection system, triggers the automatic dispersion compensation adjustment receiving from the message of path switching controller and detect under the situation of the alarm that is caused by the chromatic dispersion deterioration.
Wherein, after the service path situation that the path switching controller detects system changes, give receiver with the message informing that expression service path situation changes.
Preferably, be under the situation of 1+1 protection system in system, the path switching controller is the protection switch controller; In system is under the situation of reconstructable OADM system, and the path switching controller is that wavelength is selected veneer.
By technique scheme of the present invention, can effectively realize the correct adjustment of dynamic dispersion compensation function, solved the irrational problem of adjustment choose opportunities.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the block diagram that is connected of sender unit and signal receiving device under the no backup path situation in the correlation technique;
Fig. 2 is the block diagram that is connected that has sender unit and signal receiving device under the backup path situation in the correlation technique;
Fig. 3 is the schematic diagram according to the applied optical network structure of automatic dispersion compensation adjustment triggering method of the inventive method embodiment;
Fig. 4 is the flow chart according to the automatic dispersion compensation adjustment triggering method of the inventive method embodiment;
Fig. 5 is the flow chart according to the processing example of the automatic dispersion compensation adjustment triggering method of the inventive method embodiment;
Fig. 6 is the block diagram according to the automatic dispersion compensation adjustment trigger equipment of apparatus of the present invention embodiment.
Embodiment
Method embodiment
In the present embodiment, provide a kind of automatic dispersion compensation adjustment triggering method.
In the middle of practical application, at first,, and guarantee the receiver operate as normal according to connected system shown in Figure 3, that is, make signal receive/make a start and interconnect, and be connected to the path switching controller by equipment such as relayings.
As shown in Figure 4, the automatic dispersion compensation adjustment triggering method according to present embodiment comprises: step S402, the service path situation of path switching controller detection system, and the alert situation of receiver detection system; Step S404, the service path situation that detects system at the path switching controller changes and receiver detects under the situation of the alarm that is caused by the chromatic dispersion deterioration, and receiver triggers the automatic dispersion compensation adjustment.
Wherein, before triggering the automatic dispersion compensation adjustment, this method may further include: connect between path switching controller and receiver, wherein, the connection of foundation is used to transmit the message that expression service path situation changes.
And, detect under the situation that the service path situation of system changes at the path switching controller, this method can further comprise: the path switching controller will represent that by the connection of setting up message that the service path situation changes is notified to receiver via the connection of foundation.
Afterwards, receiver is according to the message and the detected alarm triggered automatic dispersion compensation adjustment that is caused by the chromatic dispersion deterioration that receive.
That is to say that as shown in Figure 5, the path switching controller is the service path situation of surveillance constantly, if service path situation generation changes of function is then notified receiver (also can be described as receiver system) with certain communication mode with this information; And receiver detects current alarm situation at any time, and when receiver detects when alarm receive occurring, and receiver triggers the automatic dispersion adjustment when receiving the message of expression service path situation generation changes of function.
Although show the detection of path switching controller and the detection of receiver among Fig. 5 sequentially, and in fact the processing of two testing processes can transposing order or executed in parallel.
For example, in a typical band defencive function wavelength-division system, at first configure the protection switch controller, switch plate, end plaste etc. (receiver and chromatic dispersion adjusting device are on end plaste);
Then, between protection switch controller and end plaste (that is, above-mentioned receiver), increase certain and communicate to connect, for example, monitor channel, IP tunnel, and the form of message etc. is carried out pre-configured so that receiver can be discerned;
When masterslave switchover occurring in the 1+1 protection system, protection switch controller (as the path switching controller) is responsible for message is sent to end plaste; If reconstructable OADM (ROADM) system, then wavelength selects veneer can take on the function of protecting switch controller; When the variation of wavelength assignment route occurring, wavelength selects veneer to pass through the connection transmission message of foundation before to end plaste.
After end plaste is received message, whether there is an alarm (being whether path change has damaged business), whether starts the chromatic dispersion compensating function of receiving terminal according to processing decision shown in Figure 5 in conjunction with current.
Device embodiment
In the present embodiment, provide a kind of automatic dispersion compensation adjustment trigger equipment.
As shown in Figure 6, automatic dispersion compensation adjustment trigger equipment according to present embodiment comprises: path switching controller 602, be connected to receiver 604, the service path situation that is used for detection system, and will represent that under the situation that the service path situation that detects system changes the message informing that the service path situation changes gives receiver 604; Receiver 604 is used for the alert situation of detection system, triggers the automatic dispersion compensation adjustment receiving from the message of path switching controller 602 and detect under the situation of the alarm that is caused by the chromatic dispersion deterioration.
Wherein, after the service path situation that path switching controller 602 detects system changes, give receiver 604 with the message informing that expression service path situation changes.
Preferably, be under the situation of 1+1 protection system in system, the path switching controller can be the protection switch controller; In system is under the situation of reconstructable OADM system, and the path switching controller can be selected veneer for wavelength.
In sum, the present invention considers and can't find out thoroughly in the correlation technique that present receiver produces the problem of the reason of alarm, proposed a kind ofly to judge that the alarm failure reason triggers the mechanism that automatic dispersion is adjusted, and this alarm cause sent to receiver by certain communication interface, thereby make receiving system can must understand the reason of present alarm fully, and then can decide self whether to carry out chromatic dispersion adjustment strategy at present with simple criterion.
By means of technical scheme of the present invention, can effectively realize the correct adjustment of dynamic dispersion compensation function, solved the irrational problem of adjustment choose opportunities, but avoided wrong adjustment maybe to need the problem of adjusting, guarantee system not because of the error of receiver chromatic dispersion adjustment influences performance, and adjustment process does not need manual intervention.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. an automatic dispersion compensation adjustment triggering method is characterized in that, comprising:
The service path situation of path switching controller detection system, and receiver detects the alert situation of described system;
The service path situation that detects described system at described path switching controller changes and described receiver detects under the situation of the alarm that is caused by the chromatic dispersion deterioration, and described receiver triggers the automatic dispersion compensation adjustment.
2. method according to claim 1 is characterized in that, before triggering the automatic dispersion compensation adjustment, further comprises:
Connect between described path switching controller and described receiver, wherein, the described connection of foundation is used to transmit the message that the described service path situation of expression changes.
3. method according to claim 2 is characterized in that, detects under the situation that the service path situation of described system changes at described path switching controller, further comprises:
Described path switching controller will represent that by the described connection of setting up the message that described service path situation changes is notified to described receiver via the described connection of setting up.
4. method according to claim 3 is characterized in that, described receiver is according to the described message and the detected described described automatic dispersion compensation adjustment of alarm triggered that is caused by the chromatic dispersion deterioration that receive.
5. an automatic dispersion compensation adjustment trigger equipment is characterized in that, comprising:
The path switching controller is connected to receiver, is used for the service path situation of detection system, and will represent that under the situation that the service path situation that detects described system changes the message informing that described service path situation changes gives described receiver;
Described receiver is used to detect the alert situation of described system, triggers the automatic dispersion compensation adjustment receiving from the described message of described path switching controller and detect under the situation of the alarm that is caused by the chromatic dispersion deterioration.
6. device according to claim 5 is characterized in that, after the service path situation that described path switching controller detects described system changes, gives described receiver with the message informing that the described service path situation of expression changes.
7. according to claim 5 or 6 described devices, it is characterized in that, is under the situation of 1+1 protection system in described system, and described path switching controller is the protection switch controller.
8. according to claim 5 or 6 described devices, it is characterized in that, is under the situation of reconstructable OADM system in described system, and described path switching controller is that wavelength is selected veneer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810085947 CN101599797B (en) | 2008-06-06 | 2008-06-06 | Method and device for triggering automatic dispersion compensation regulation |
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| CN 200810085947 CN101599797B (en) | 2008-06-06 | 2008-06-06 | Method and device for triggering automatic dispersion compensation regulation |
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| CN101599797B CN101599797B (en) | 2012-04-04 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102223184A (en) * | 2011-06-27 | 2011-10-19 | 中兴通讯股份有限公司 | Dispersion compensation method and device |
| CN103188017A (en) * | 2013-04-17 | 2013-07-03 | 烽火通信科技股份有限公司 | Fast self-adaptive dispersion compensation method in 40Gbps DWDM (dense wavelength division multiplexing) system |
| WO2023024924A1 (en) * | 2021-08-24 | 2023-03-02 | 中兴通讯股份有限公司 | Routing switching method, node, routing device and storage medium |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1870469B (en) * | 2006-05-29 | 2010-06-09 | 浙江工业大学 | Optical split insertion duplexer based on acousto-optic tunable wave filter |
| CN101145855B (en) * | 2007-09-27 | 2011-06-22 | 中兴通讯股份有限公司 | A color dispersion compensation device and its method for optical network |
-
2008
- 2008-06-06 CN CN 200810085947 patent/CN101599797B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102223184A (en) * | 2011-06-27 | 2011-10-19 | 中兴通讯股份有限公司 | Dispersion compensation method and device |
| CN103188017A (en) * | 2013-04-17 | 2013-07-03 | 烽火通信科技股份有限公司 | Fast self-adaptive dispersion compensation method in 40Gbps DWDM (dense wavelength division multiplexing) system |
| WO2023024924A1 (en) * | 2021-08-24 | 2023-03-02 | 中兴通讯股份有限公司 | Routing switching method, node, routing device and storage medium |
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| CN101599797B (en) | 2012-04-04 |
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