CN101364845B - Method and system for optical power adjustment in wavelength-division network - Google Patents
Method and system for optical power adjustment in wavelength-division network Download PDFInfo
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- CN101364845B CN101364845B CN2007101200908A CN200710120090A CN101364845B CN 101364845 B CN101364845 B CN 101364845B CN 2007101200908 A CN2007101200908 A CN 2007101200908A CN 200710120090 A CN200710120090 A CN 200710120090A CN 101364845 B CN101364845 B CN 101364845B
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Abstract
The inventive embodiment provides a method and a system for adjusting optical power in a wave division network. The input power of each wavelength on a receiving terminal can be adjusted by adjusting the upper wave power in a node and adjusting the cross-band power of a cross-band node. According to the power adjustment sequence, optical power adjustment of the wave division network can be achieved rapidly, the work load for optical power adjustment is reduced, and the adjustment time is saved, thereby accelerating the construction process of the wave division network. Additionally, the method can flexibly adjust the optical power of the network when the power changes due to the reasons such as the addition of a new service and the aging of optical fibers, thereby improving the performance of the entire network.
Description
Technical field
The present invention relates to optical transport network field, relate in particular to the method and system of optical power adjustment in a kind of wavelength-division network.
Background technology
Along with the continuous increase of information conveying capacity, wavelength-division network has obtained development widely, and the scale of wavelength-division network is increasing at present, and network components is also more and more, and network construction form also becomes increasingly complex.Various smooth parts in wavelength-division network all have the certain power input range, and for example there is certain scope in the input power of receiver; Also there is typical input power range in the input power of amplifier, in order to obtain better signal-to-noise performance, just need carry out power equalization to each wavelength like this.That is to say and to carry out meticulous adjustment to the power of every wavelength channel link at each parts place of wavelength-division network; And for a big wavelength-division network; So numerous power adjustment can delay the networking process greatly, and can reduce the speed that provides of Added Business.In addition; If power is carried out artificial adjustment; Also may cause the inefficacy and even the infringement network components of whole piece link because of the adjustment error; Therefore need a kind of self-adjusting scheme of luminous power of wavelength-division network to avoid above problem, there is a kind of scheme of luminous power auto-initiation in industry at present, and its method of adjustment is as follows:
1, at first, confirm the optical fiber attenuation of each section of striding and confirm the target gain of amplifier in view of the above;
2, select one of them wavelength channel, and according to this wavelength channel link respectively the optical fiber attenuation adjustment transmitting power of the section of striding to target level;
3, then, adjust the receiving terminal decay again and reach the predetermined power level that receives of receiver;
4, repeating 2,3 above steps finishes up to all wavelength channel adjustment.
Can find out that from above adjustment scheme the optical power adjustment of being carried out to carry out one by one with wavelength, adjust all wavelength and required a great deal of time, and the order of control wavelength adjustment has also strengthened the difficulty of control; In addition; When the transmitting power of wavelength channel transmitter is adjusted; Need know the propagation path of wavelength channel and the power attenuation of each section of striding, this obviously is difficulty very for present configurable optical-fiber network, and goes to obtain above-mentioned information and also need great amount of time; Simultaneously; Above adjustment scheme is not considered the situation that has miscellaneous part in the wavelength-division network yet; For example when exist in the wavelength-division network on the wavelength/when following multiplexer OADM (Optical Add/Drop Multiplexer) or light intersected website PXC device nodes such as (Photonic Cross-Connects), above-mentioned adjustment scheme just can't meet the demands.
In sum, in realizing process of the present invention, the inventor finds to have following problem in the prior art at least: existing optical power adjustment scheme need spend the long time, and it is also bigger to accomplish the needed workload of adjustment.
Summary of the invention
Embodiment of the present invention technical problem to be solved is to provide the method and system of optical power adjustment in a kind of wavelength-division network, can reduce the workload of optical power adjustment, saves the adjustment time, accomplishes the optical power adjustment to wavelength-division network fast.
Embodiment of the present invention realizes through following technical scheme:
The method of optical power adjustment in a kind of wavelength-division network comprises: the last wave power of intranodal is adjusted in the intranodal normal power scope; The section of striding power that again will the section of striding node is adjusted in the section of the striding node normal power scope; The input power of adjusting receiving terminal again is in normal received power scope.
Embodiment of the present invention also provides the system of optical power adjustment in a kind of wavelength-division network, comprising:
Last wave power adjusting device is used for the last wave power of intranodal is adjusted in the intranodal normal power scope;
The section of striding power adjustment apparatus is used for the section of the striding power of the section of striding node is adjusted in the section of the striding node normal power scope;
The received power adjusting device, the input power that is used to adjust receiving terminal is in normal received power scope.
Can find out by the above-mentioned technical scheme that provides; Last wave power through the adjustment intranodal; The input power of each wavelength can be accomplished the optical power adjustment to wavelength-division network fast on the receiving terminal of the section of the striding power of the adjustment section of striding node, and then adjustment again; And reduced the workload of optical power adjustment, saved the adjustment time.
Description of drawings
Fig. 1 is the flow chart of the said method of embodiment of the present invention;
Fig. 2 is the structural representation of the said system of embodiment of the present invention;
Fig. 3 is the structural representation of the specific embodiment of the invention 1 described intranodal optical power adjustment;
Fig. 4 is the implementation structure sketch map of the specific embodiment of the invention 1 described light detection unit;
The structural representation that Fig. 5 adjusts for the power that amplifies website for the specific embodiment of the invention 1 described section of striding node;
Fig. 6 is the structural representation of the specific embodiment of the invention 1 described receiving terminal input power adjustment;
Fig. 7 for the specific embodiment of the invention 2 described section of striding nodes is on the wavelength/structural representation of the power adjustment of following website;
Fig. 8 is the structural representation of the power adjustment of light intersection website for the specific embodiment of the invention 3 described section of striding nodes.
Embodiment
Embodiment of the present invention provides the method and system of optical power adjustment in a kind of wavelength-division network; Through monitoring to wavelength signals; Respectively the adjustable damping of each node in the wavelength-division network is adjusted, thus the adjustment of the power of the fast automatic whole wavelength-division network of completion.Specifically; Be exactly last wave power through the adjustment intranodal, the input power of each wavelength on the receiving terminal of the section of the striding power of the adjustment section of striding node, and then adjustment again; According to such power adjustment order; Can accomplish optical power adjustment fast, and reduce the workload of optical power adjustment, save the adjustment time wavelength-division network.
For better describing embodiment of the present invention, combine the accompanying drawing specific embodiments of the invention to describe at present, be illustrated in figure 1 as the flow chart of the said method of embodiment of the present invention, comprise among the figure:
Step 11: wave power in the adjustment.The last wave power of intranodal is adjusted in the intranodal normal power scope, specifically, is exactly to want wave power in the monitoring node each; Adjust the adjustable damping of corresponding wavelength then according to the result of monitoring; Can be through regulating electric adjustable attenuator (EVOA; Electric VariableOptical Attenuator) realizes; Through regulating corresponding adjustable damping wave power is adjusted in the intranodal normal power scope; Here the desired typical input range of input that said intranodal normal power scope can be the intranodal output amplifier, this input range are that the concrete performance by each amplifier decides, and also can be the scopes that manual work is set according to network condition.
Monitoring to wave power on each of intranodal can be accomplished by the light detection unit; The light detection unit here has the function of wavelength identification and wavelength power monitoring; For example can be the device that the signal after the opto-electronic conversion is carried out Digital Signal Processing, also can be spectral analysis device etc.
In addition,, prevent because the excessive downstream node that has influence on of node power output, can also the power output of node be turn-offed before the wave power adjustment carrying out on the intranodal, guarantee that internodal luminous power is independent of each other for when intranodal power is adjusted.Specifically, can turn-off, the node power output is turn-offed through the pumping current of output amplifier in the Control Node; An optical switch can also be set behind the intranodal output amplifier, and the power output of node is turn-offed in the shutoff of control optical switch when powering on.Simultaneously, after wave power is adjusted in the intranodal normal power scope on intranodal, in order to guarantee that luminous power is when arriving the input of downstream node; Its input optical power is below normal input level; To guarantee the reception safety of downstream node, can the electric adjustable attenuator on the section of striding node and the receiving terminal be provided with, it is set to the maximum attenuation value; Then the node power output of turn-offing is opened again, node power can normally be exported.
Step 12: the adjustment section of striding power.The section of the striding power of the section of striding node is adjusted in the section of the striding node normal power scope; Specifically; To monitor the section of the striding power of each wavelength on the section of the striding node exactly; According to the adjustable damping on the corresponding section of striding of monitoring result adjustment, the section of the striding power that makes each wavelength is in the section of striding node normal power scope then.Here also can be accomplished by the light detection unit the monitoring of the section of striding power, the adjustment adjustable damping also can be realized through regulating electric adjustable attenuator; And the described section of striding node normal power scope can be to be decided by the dissimilar of the section of striding node; It generally is the desired typical input range of input of the dissimilar section of striding node output amplifier; With the above; This typical input range also can be decided by the concrete performance of each amplifier, or manual work is set according to network condition.
There is multiple situation in the described section of striding node, and what have has only the amplification website, and what have possibly also comprise on the wavelength/following website (OADM, Optical Add/Drop Multiplexer), also has the situation that comprises other multiple websites.Based on the section of striding node comprise dissimilar; Regulative mode also has difference; Specifically, exactly when the section of striding node is the amplification website, monitor the section of the striding power of each wavelength on the said amplification website; Based on the corresponding adjustable damping of monitoring result adjustment, making the power of the section of striding power at the amplifier station place of said each wavelength is to amplify in the normal input power range of website; When the section of striding node be on the wavelength/during following website; Can discern through the light detection unit which is the break-through wavelength in the optical fiber of input amplifier; Which is that upward wave-wave is long; And discern their power, and based on the corresponding adjustable damping of monitoring result adjustment, make the long section of the striding power of said each break-through wavelength and last wave-wave can be on wavelength/the normal power scope of following website in; When the section of striding node is a light when intersecting website, through the light detection unit can obtain each wavelength through path and corresponding power, then based on the adjustable damping on the monitoring result adjustment respective path, make each wavelength power in light intersects the normal power scope of website.
Step 13: adjustment receiving terminal input power.The input power of receiving terminal is adjusted in the normal received power scope; Specifically; Monitor the current input power of each wavelength of receiving terminal exactly, then according to the corresponding adjustable damping of monitoring result adjustment, the input power that makes each wavelength is in normal received power scope.Normal received power scope described here can be obtained through reading the receiving terminal single board information, also can be that manual work is set according to network condition; And the monitoring of current input power can be to be accomplished by the light detection unit, also can realize through the power monitoring function of receiving terminal veneer; Adjustment to adjustable damping also realizes through regulating electric adjustable attenuator.
In addition; Situation for the network capacity extension; Just when the newly-increased wavelength of node,, can adjust again because respectively the section of striding power has been adjusted and finished; So only need to adjust newly-increased wavelength power in intranodal normal power scope, and then the receiving terminal input power of the newly-increased wavelength of adjustment is interior just passable to normal received power scope.
In addition, because the shake of the power output of transmitter, or the aging optical fiber attenuation of optical fiber is when becoming big, and its channel power all can change.This moment can be through the power of all wavelengths in the light detection unit monitoring optical fiber, and when the power output owing to transmitting terminal changed, the corresponding long power of wave-wave of going up of adjustment was in intranodal normal power scope; And when the aging optical fiber attenuation of optical fiber became big, the power of all wavelengths all changed in the optical fiber, and the section of the striding power that at this moment just can adjust the correspondence section of striding node is in the section of striding node normal power scope.
Embodiment of the present invention also provides the system of optical power adjustment in a kind of wavelength-division network; Be illustrated in figure 2 as the structural representation of said system; Comprise the wave power adjusting device among the figure; The section of striding power adjustment apparatus and received power adjusting device, last wave power adjusting device wherein are used for the last wave power of intranodal is adjusted in the intranodal normal power scope, and method of adjustment as above method execution mode step 11 is said; The section of striding power adjustment apparatus is used for the section of the striding power of the section of striding node is adjusted in the section of the striding node normal power scope, and method of adjustment as above method execution mode step 12 is said; The input power that the received power adjusting device is used to adjust receiving terminal is in normal received power scope, and method of adjustment as above method execution mode step 13 is said.
Described going up in the wave power adjusting device comprises light detection unit and electric adjustable attenuator; Light detection unit wherein is used in the monitoring node wave power on each; Wavelength and wavelength power can be discerned in the light detection unit here; For example can be the device that the signal after the opto-electronic conversion is carried out Digital Signal Processing, also can be spectral analysis device etc.; The electricity adjustable attenuator is used for the monitoring result according to said light detection unit, and the corresponding adjustable damping of going up ripple of adjustment makes on each wave power in intranodal normal power scope.
Comprise light detection unit and electric adjustable attenuator in the described section of the striding power adjustment apparatus; Light detection unit wherein is used for monitoring the section of the striding power of each wavelength on the section of the striding node; Can be the device that the signal after the opto-electronic conversion is carried out Digital Signal Processing, also can be spectral analysis device etc.; The electricity adjustable attenuator is used for according to the monitoring result of said light detection unit, the adjustable damping of adjustment corresponding wavelength, and the section of the striding power that makes said each wavelength is in the section of striding node normal power scope.
Comprise light detection unit and electric adjustable attenuator in the described received power adjusting device; Light detection unit wherein is used for monitoring the current input power of each wavelength of receiving terminal; Can be to be waited by device that the signal after the opto-electronic conversion is carried out Digital Signal Processing or spectral analysis device to realize, also can be to be realized by the monitoring component on the receiving terminal veneer; The electricity adjustable attenuator is used for according to the monitoring result of said light detection unit, the adjustable damping of adjustment corresponding wavelength, and the input power that makes said each wavelength is in normal received power scope.
Also comprise the node output power control device in the described system; Be used on said before the adjustment of wave power adjusting device, the power output of turn-offing node, specifically; Can turn-off through the pumping current of output amplifier in the Control Node, the node power output is turn-offed; An optical switch can also be set behind the intranodal output amplifier, and the power output of node is turn-offed in the shutoff of control optical switch when powering on; Wave power adjusting device adjustment finishes and link attenuation, receiving attenuation are set to after the maximum attenuation on said then, opens the power output of node again.
In addition, also can comprise normal received power deriving means in the said system, said normal received power deriving means is used for obtaining described normal received power scope through reading the receiving terminal single board information; And the said normal received power scope that will get access to is sent in the said received power adjusting device.
For further describing embodiment of the present invention, combine the example of practical implementation that its technical scheme is described further at present:
Embodiment 1: with the optical power adjustment in the wavelength-division network is example; At first carry out the optical power adjustment of intranodal; Before adjustment when preventing intranodal adjustment wavelength power, the excessive downstream node that has influence on of node power output, the power output that can turn-off node; Specifically can turn-off and perhaps behind the node output amplifier, place an optical switch, and the mode that the control optical switch turn-offs when powering on guarantees that internodal luminous power is independent of each other through the control amplifier pumping current.
After the power output of turn-offing node; Just can carry out intranodal power has adjusted; Be illustrated in figure 3 as the structural representation of present embodiment intranodal optical power adjustment; Among the figure: each service board output wavelength of intranodal gets up to deliver to the output of intranodal amplifier to each wavelength multiplexing through optical multiplexer spare behind electric adjustable attenuator (EVOA); Monitoring port (MON mouth) at amplifier is provided with a light detection unit, and described light detection unit has the function of wavelength identification and wavelength power monitoring.
Light detection unit described in the present embodiment can be realized through following mode; Of Fig. 4 is the implementation structure sketch map of light detection unit in the present embodiment; Among the figure: at first the wavelength for each service board output is provided with a last id signal that the whole network is unique; Like the wk1 among the figure, wkm and wkn; Pass through the id signal of the said setting of monitoring then at each node place of network link; Just can obtain the wavelength and the corresponding wavelength power that arrive node; Wk Detector (wk checkout gear) as among the figure is exactly described light detection unit, specifically can carry out the device of Digital Signal Processing to the signal after the opto-electronic conversion.
Just can get access to the wavelength that exists in the optical fiber and the power of each wavelength through described light detection unit; Then according to the corresponding EVOA of this monitor value adjustment; Each wavelength is adjusted in the intranodal normal power scope; Be that it is adjusted to the desired typical Dan Bo input range of intranodal amplifier in the present embodiment; The typical Dan Bo input range here can be that the concrete performance by each amplifier decides, and also can be the scope that manual work is set according to network condition.
Finish and be provided with after link and receiving terminal adjustable damping reach the maximum attenuation value in intranodal power adjustment, just can open the output image intensifer or the optical switch of node again, node power is normally exported, then the power of the section of striding node is adjusted.
The endpoint node of the section of striding is to amplify website in the present embodiment; Be illustrated in figure 5 as the structural representation that the section of striding node is adjusted for the power that amplifies website; Among the figure: utilize two light detection unit to get access to the luminous power situation that the website front and back are amplified in input, and obtain the performance number of amplifier in mouth according to light detection unit 2; And then adjust EVOA in view of the above; Each wavelength power is adjusted in the section of the striding node normal power scope; Be that it is adjusted to the desired typical input range of input that amplifies the website output amplifier in the present embodiment; With the above, this typical input range also can be decided by the concrete performance of each amplifier, or manual work is set according to network condition.
After last wave power and the adjustment of the section of striding power finish; Again the input power of receiving terminal is adjusted; It is adjusted in the normal received power scope, be illustrated in figure 6 as the structural representation of the described receiving terminal input power adjustment of present embodiment, through the current input power of each wavelength of monitoring receiving terminal; According to the corresponding electric adjustable attenuator of monitoring result adjustment, the input power that makes each wavelength is in normal received power scope then.Here, the monitoring of current input power can be to be accomplished by the light detection unit, also can realize through the power monitoring function of receiving terminal veneer, is that the power monitoring function through the receiving terminal veneer realizes in the present embodiment; In addition, described normal received power scope can be obtained through reading the receiving terminal single board information, also can set according to the network condition manual work.
Through above set-up procedure, just accomplished power adjustment to wavelength-division network, according to such power adjustment order, can accomplish optical power adjustment fast, and reduce the workload of optical power adjustment simultaneously wavelength-division network, saved the adjustment time.
Embodiment 2: present embodiment is identical with embodiment 1 to the adjustment of the adjustment of wave power on the intranodal and receiving terminal input power; Different is has also increased OADM website (on the wavelength/following website) and PXC website (light intersection website) on the section of striding node; When the section of striding power is adjusted, respectively the website that increases is adjusted operation accordingly like this with regard to needing.
Be illustrated in figure 7 as the described section of the striding node of present embodiment and be on the wavelength/structural representation of the power adjustment of following website; Among the figure: need adjust to wave-wave length and break-through wavelength power on the node; Because the light detection unit has the function of wavelength identification and wavelength power monitoring; Therefore just can identify through which is the break-through wavelength in the optical fiber of OADM website through 2 light detection unit, which is to upload wavelength, and can discern their power; Then according to the corresponding EVOA of monitoring result adjustment; Make the break-through wavelength and upload in the normal power scope that wavelength reaches the OADM website; It in the present embodiment the desired typical input range of input of it being adjusted to OADM website output amplifier; With the above, this typical input range also can be decided by the concrete performance of each amplifier, or manual work is set according to network condition.
Being illustrated in figure 8 as the described section of the striding node of present embodiment is the structural representation of the power adjustment of light intersection website; The PXC website can be with exchanging in the same wavelength from the wavelength in the optical fiber of different nodes; The 1st, 2 wavelength in two optical fiber of PXC website left end as shown in Figure 8 have been switched in the same optical fiber of right-hand member; Because two optical fiber are respectively from different nodes, institute is different through the path, so wavelength 1,2 is different at the power of the input of PXC website output amplifier.Just can obtain the photosphere and the section of striding power of wavelength respective wavelength after through two light detection unit through the PXC website, just obtain wavelength through path and corresponding power; And then according to the EVOA on the monitoring result adjustment respective path; The section of the striding power that makes each wavelength on the corresponding photosphere is in the normal power scope of light intersection website; It in the present embodiment the desired typical input range of input of it being adjusted to PXC website output amplifier; With the above, this typical input range also can be decided by the concrete performance of each amplifier, or manual work is set according to network condition.
The rest may be inferred, when the section of striding node is polytype combination, just can adopt the above method to adjust successively, equally also can accomplish the optical power adjustment to wavelength-division network fast, reduces the workload of optical power adjustment, saves the adjustment time.
In sum, embodiment of the present invention can be accomplished the optical power adjustment to wavelength-division network fast, reduces the workload of optical power adjustment, saves the adjustment time, thus the road construction process of acceleration wave subnetwork; And at the wavelength-division network Added Business, or can adjust the luminous power of network when causing variable power flexibly owing to reasons such as optical fiber are aging, improved the whole performance of network.
The above; Be merely the preferable embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technical staff who is familiar with the present technique field is in the technical scope that the embodiment of the invention discloses, and the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.
Claims (14)
1. the method for optical power adjustment in the wavelength-division network is characterized in that, the last wave power of intranodal is adjusted in the intranodal normal power scope; The section of striding power that again will the section of striding node is adjusted in the section of the striding node normal power scope; The input power of adjusting receiving terminal again is in normal received power scope;
Wherein, said last wave power with intranodal is adjusted in the intranodal normal power scope, specifically comprises: each goes up wave power in the monitoring node, according to the adjustable damping of monitoring result adjustment correspondence, makes on each wave power in intranodal normal power scope;
The said section of striding power that will the section of striding node is adjusted in the section of the striding node normal power scope; Specifically comprise: the section of the striding power of each wavelength on the monitoring section of the striding node; Based on the corresponding adjustable damping of monitoring result adjustment, the section of the striding power that makes said each wavelength is in the section of striding node normal power scope;
The input power of described adjustment receiving terminal specifically comprises in normal received power scope: the current input power of each wavelength of monitoring receiving terminal, according to the corresponding adjustable damping of monitoring result adjustment, the input power that makes each wavelength is in normal received power scope.
2. the method for optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 1, and described intranodal normal power scope specifically comprises: the desired typical input range of the input of intranodal output amplifier.
3. the method for optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 1,, also comprises: the node power output is turn-offed before wave power adjusts in the intranodal normal power scope on intranodal said.
4. the method for optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 3, said the node power output is turn-offed, and specifically comprises: the shutoff of the pumping current through output amplifier in the Control Node, the node power output is turn-offed; Or the shutoff through the optical switch that is provided with behind the output amplifier in the Control Node, the node power output is turn-offed.
5. the method for optical power adjustment in the wavelength-division network as claimed in claim 3; It is characterized in that; Said after wave power adjusts in the intranodal normal power scope on intranodal; Also comprise: the electric adjustable attenuator that is provided with on the section of striding node and the receiving terminal is the maximum attenuation value, and the node power output of turn-offing is opened, and node power is normally exported.
6. the method for optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 1, and the described section of striding node comprises a kind of with in the lower node at least: amplify on website, the wavelength/following website and light intersects website;
When the section of striding node is when amplifying website, monitor the section of the striding power of each wavelength on the said amplification website, according to the corresponding adjustable damping of monitoring result adjustment, the section of the striding power that makes said each wavelength is in amplifying website normal power scope;
When the section of striding node be on the wavelength/during following website; Monitor on the said wavelength/following website on each break-through wavelength and the long section of the striding power of last wave-wave; Based on the corresponding adjustable damping of monitoring result adjustment, make the long section of the striding power of said each break-through wavelength and last wave-wave on wavelength/following website normal power scope in;
When the section of striding node is light intersection website, monitor the photosphere and the section of striding power of each wavelength on the said light intersection website, based on the corresponding adjustable damping of monitoring result adjustment, the section of the striding power that makes each wavelength on the corresponding photosphere is in light intersection website normal power scope.
7. the method for optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 1, and the described section of striding node normal power scope specifically comprises: the desired typical input range of the input of the section of striding node output amplifier.
8. the method for optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 1, and the current input power of described each wavelength specifically is to monitor acquisition through the power monitoring module of light detection unit or service board self.
9. the method for optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 1, and described normal received power scope is obtained through reading the receiving terminal single board information.
10. the method for optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 1, when node increases wavelength newly, adjusts said newly-increased wavelength power in intranodal normal power scope; The receiving terminal input power of adjusting said newly-increased wavelength again is in normal received power scope.
11. the method for optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 1, when the power output of transmitting terminal changed, the corresponding long power of wave-wave of going up of adjustment was in intranodal normal power scope;
When the power of all wavelengths in the optical fiber all took place to change equally, the section of the striding power of the corresponding section of the striding node of adjustment was in the section of striding node normal power scope.
12. the system of optical power adjustment is characterized in that in the wavelength-division network, comprising:
Last wave power adjusting device is used for the last wave power of intranodal is adjusted in the intranodal normal power scope;
The section of striding power adjustment apparatus is used for the section of the striding power of the section of striding node is adjusted in the section of the striding node normal power scope;
The received power adjusting device, the input power that is used to adjust receiving terminal is in normal received power scope;
Wherein, described going up in the wave power adjusting device comprises:
The light detection unit is used in the monitoring node wave power on each;
The electricity adjustable attenuator is used for monitoring result according to said light detection unit, and the corresponding adjustable damping of going up ripple of adjustment makes on each wave power in intranodal normal power scope;
In the described section of the striding power adjustment apparatus, comprising:
The light detection unit is used for monitoring the section of the striding power of each wavelength on the section of the striding node;
The electricity adjustable attenuator is used for monitoring result according to said light detection unit, the adjustable damping of adjustment corresponding wavelength, and the section of the striding power that makes said each wavelength is in the section of striding node normal power scope;
In the described received power adjusting device, comprising:
The light detection unit is used for monitoring the current input power of each wavelength of receiving terminal;
The electricity adjustable attenuator is used for monitoring result according to said light detection unit, the adjustable damping of adjustment corresponding wavelength, and the input power that makes said each wavelength is in normal received power scope.
13. the system of optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 12, also comprises:
The node output power control device is used on said before the adjustment of wave power adjusting device the power output of turn-offing node; After the wave power adjusting device is adjusted on said, the power output of opening node.
14. the system of optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 12, also comprises:
Normal received power deriving means is used for obtaining described normal received power scope through reading the receiving terminal single board information; The said normal received power scope that gets access to is sent to said received power adjusting device.
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| CN102201863A (en) * | 2011-06-09 | 2011-09-28 | 华为技术有限公司 | Method and device for debugging optical power |
| CN102281110B (en) * | 2011-07-29 | 2014-04-16 | 华为技术有限公司 | Methods and devices for regulating optical power |
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