CN101364845A - 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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- CN101364845A CN101364845A CNA2007101200908A CN200710120090A CN101364845A CN 101364845 A CN101364845 A CN 101364845A CN A2007101200908 A CNA2007101200908 A CN A2007101200908A CN 200710120090 A CN200710120090 A CN 200710120090A CN 101364845 A CN101364845 A CN 101364845A
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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 the speed that provides of Added Business can be provided.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 adjusting 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, determine the optical fiber attenuation of each section of striding and determine 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 of the section of striding adjust transmitting power 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.
As can be seen, the optical power adjustment of being carried out is carried out one by one with wavelength from above adjustment scheme, adjusted 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 very difficult for present configurable optical-fiber network, and goes to obtain above-mentioned information and also need a large 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 that there are the following problems at least in the prior art: existing optical power adjustment scheme need spend the long time, and it is also bigger to finish 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, finishes the optical power adjustment to wavelength-division network fast.
Embodiment of the present invention is achieved through the following technical solutions:
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 is used to adjust the input power of receiving terminal in normal received power scope.
By the above-mentioned technical scheme that provides as can be seen, by adjusting the last wave power of intranodal, adjust the section of the striding power of the section of striding node again, and then the input power of each wavelength on the adjustment receiving terminal, can finish optical power adjustment fast to wavelength-division network, and reduced the workload of optical power adjustment, saved the adjustment time.
Description of drawings
Fig. 1 is the flow chart of the described method of embodiment of the present invention;
Fig. 2 is the structural representation of the described 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 schematic diagram 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 that the specific embodiment of the invention 1 described receiving terminal input power is adjusted;
Fig. 7 for the specific embodiment of the invention 2 described section of striding nodes is on the wavelength/structural representation that the power of following website is adjusted;
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, by monitoring to wavelength signals, respectively the adjustable damping of each node in the wavelength-division network is adjusted, thus the fast automatic power adjustment of finishing whole wavelength-division network.Specifically, be exactly by adjusting the last wave power of intranodal, adjust the section of the striding power of the section of striding node again, and then the input power of each wavelength on the adjustment receiving terminal, according to such power adjustment order, can finish 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, now in conjunction with the accompanying drawings the specific embodiment of the present invention is described, be illustrated in figure 1 as the flow chart of the described 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 by regulating electric adjustable attenuator (EVOA, Electric VariableOptical Attenuator) realizes, by 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 is that the specific performance by each amplifier decides, and also can be the scope of manually setting according to network condition.
Monitoring to wave power on each of intranodal can be finished 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, the power output of node can also be turn-offed before wave power is adjusted on the intranodal carrying out, 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 by 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: adjust the 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 monitoring result adjustment correspondence section of striding, the section of the striding power that makes each wavelength is in the section of striding node normal power scope then.Here also can finish the monitoring of the section of striding power, adjust adjustable damping and also can realize by regulating electric adjustable attenuator by the light detection unit; 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, same as above, this typical input range also can be decided by the specific performance of each amplifier, or manually sets 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 may also comprise on the wavelength/following website (OADM, Optical Add/Drop Multiplexer), also has the situation that comprises other multiple websites.According to 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 described amplification website, adjust corresponding adjustable damping according to monitoring result, making the power of the section of striding power at the amplifier station place of described 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 by 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 adjust corresponding adjustable damping according to monitoring result, make the long section of the striding power of described 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, by the light detection unit can obtain each wavelength through path and corresponding power, adjust adjustable damping on the respective path according to monitoring result then, make each wavelength power in light intersects the normal power scope of website.
Step 13: adjust the 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, adjust corresponding adjustable damping according to monitoring result then, the input power that makes each wavelength is in normal received power scope.Normal received power scope described here can be obtained by reading the receiving terminal single board information, also can be manually to set according to network condition; And the monitoring of current input power can be to be finished by the light detection unit, also can realize by the power monitoring function of receiving terminal veneer; Adjustment to adjustable damping also realizes by regulating electric adjustable attenuator.
In addition, situation for the network capacity extension, just when node increases wavelength newly, because respectively the section of striding power has been adjusted and has been finished, can adjust again, event only needs the newly-increased wavelength power of adjustment 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.Can when the power output owing to transmitting terminal changes, adjust the corresponding long power of wave-wave of going up in intranodal normal power scope this moment by the power of all wavelengths in the light detection unit monitoring optical fiber; 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 described 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 is 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 described; 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 described; 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 described.
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 described light detection unit, adjusts the corresponding adjustable damping of going up ripple, 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 adjusting the adjustable damping of corresponding wavelength according to the monitoring result of described light detection unit, and the section of the striding power that makes described 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 adjusting the adjustable damping of corresponding wavelength according to the monitoring result of described light detection unit, and the input power that makes described each wavelength is in normal received power scope.
Also comprise the node output power control device in the described system, be used for before the wave power adjusting device is adjusted on described, the power output of turn-offing node, specifically, can turn-off by 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; The adjustment of wave power adjusting device finishes and link attenuation, receiving attenuation are set to after the maximum attenuation on described then, opens the power output of node again.
In addition, also can comprise normal received power deriving means in the described system, described normal received power deriving means is used for obtaining described normal received power scope by reading the receiving terminal single board information; And the described normal received power scope that will get access to is sent in the described received power adjusting device.
For further describing embodiment of the present invention, existing example in conjunction with concrete enforcement is described further its technical scheme:
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 adjusting when preventing that intranodal from adjusting wavelength power, the excessive downstream node that has influence on of node power output, can turn-off the power output of node, specifically can or 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 by the shutoff of 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 by 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 in the following way, be the implementation structure schematic diagram of light detection unit in the present embodiment as described in Figure 4, 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, as the wk1 among the figure, wkm and wkn; Pass through the id signal of the described setting of monitoring then at each node place of network link, just can obtain the wavelength and the corresponding wavelength power that arrive node, as the wk Detector among the figure (wk checkout gear) 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 by described light detection unit; Adjust corresponding EVOA according to this monitor value then, 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 specific performance by each amplifier decides, and also can be the scope of manually setting according to network condition.
Finish and be provided with after link and receiving terminal adjustable damping reach the maximum attenuation value in the adjustment of intranodal power, 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, same as above, this typical input range also can be decided by the specific performance of each amplifier, or manually sets 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 that the described receiving terminal input power of present embodiment is adjusted, current input power by each wavelength of monitoring receiving terminal, adjust corresponding electric adjustable attenuator according to monitoring result then, the input power that makes each wavelength is in normal received power scope.Here, the monitoring of current input power can be to be finished by the light detection unit, also can realize by the power monitoring function of receiving terminal veneer, is that the power monitoring function by the receiving terminal veneer realizes in the present embodiment; In addition, described normal received power scope can be obtained by reading the receiving terminal single board information, also can manually set according to network condition.
By above set-up procedure, just finished power adjustment to wavelength-division network, according to such power adjustment order, can finish 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 that the power of following website is adjusted, 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 by which is the break-through wavelength in the optical fiber of OADM website by 2 light detection unit, which is to upload wavelength, and can discern their power; Adjust corresponding EVOA according to monitoring result then, 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, same as above, this typical input range also can be decided by the specific performance of each amplifier, or manually sets 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 will exchange 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 have been switched in the same optical fiber of right-hand member as shown in Figure 8, because two optical fiber are respectively from different nodes, institute is through the path difference, so wavelength 1,2 is in the power difference of the input of PXC website output amplifier.Just can obtain the photosphere and the section of the striding power of wavelength respective wavelength after by two light detection unit by 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, same as above, this typical input range also can be decided by the specific performance of each amplifier, or manually sets 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 finish 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 finished 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 performance of network integral body.
The above; only be the preferable embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the embodiment of the invention discloses; 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 (20)
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.
2. the method for optical power adjustment in the wavelength-division network as claimed in claim 1, it is characterized in that, described last wave power with intranodal is adjusted in the intranodal normal power scope, specifically comprise: wave power on each in the monitoring node, adjust corresponding adjustable damping according to monitoring result, make on each wave power in intranodal normal power scope.
3. the method for optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 1 or 2, and described intranodal normal power scope specifically comprises: the desired typical input range of the input of intranodal output amplifier.
4. 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 described.
5. the method for optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 4, described the node power output is turn-offed, and specifically comprises: the shutoff of the pumping current by output amplifier in the Control Node, the node power output is turn-offed; Or the shutoff by the optical switch that is provided with behind the output amplifier in the Control Node, the node power output is turn-offed.
6. the method for optical power adjustment in the wavelength-division network as claimed in claim 4, it is characterized in that, described 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, node power is normally exported with the node power output unlatching of turn-offing.
7. the method for optical power adjustment in the wavelength-division network as claimed in claim 1, it is characterized in that, the described 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, adjust corresponding adjustable damping according to monitoring result, the section of the striding power that makes described each wavelength is in the section of striding node normal power scope.
8. the method for optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 7, 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 described amplification website, adjust corresponding adjustable damping according to monitoring result, the section of the striding power that makes described 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 described wavelength/following website on each break-through wavelength and the long section of the striding power of last wave-wave, adjust corresponding adjustable damping according to monitoring result, make the long section of the striding power of described 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 the striding power of each wavelength on the described light intersection website, adjust corresponding adjustable damping according to monitoring result, the section of the striding power that makes each wavelength on the corresponding photosphere is in light intersection website normal power scope.
9. as the method for optical power adjustment in claim 1 or the 7 described wavelength-division networks, it is characterized in that 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.
10. the method for optical power adjustment in the wavelength-division network as claimed in claim 1, it is characterized in that, the input power of described adjustment receiving terminal is in normal received power scope, specifically comprise: the current input power of each wavelength of monitoring receiving terminal, adjust corresponding adjustable damping according to monitoring result, the input power that makes each wavelength is in normal received power scope.
11. the method as optical power adjustment in the claim 10 described wavelength-division networks is characterized in that, the current input power of described each wavelength specifically is to monitor acquisition by the power monitoring module of light detection unit or service board self.
12. the method for optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 10, described normal received power scope is obtained by reading the receiving terminal single board information.
13. 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 described newly-increased wavelength power in intranodal normal power scope; The receiving terminal input power of adjusting described newly-increased wavelength again is in normal received power scope.
14. 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 changes, adjusts the corresponding long power of wave-wave of going up 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 adjusting the corresponding section of striding node was in the section of striding node normal power scope.
15. 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 is used to adjust the input power of receiving terminal in normal received power scope.
16. the system of optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 15, 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 described light detection unit, adjusts the corresponding adjustable damping of going up ripple, makes on each wave power in intranodal normal power scope.
17. the system of optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 15, 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 described light detection unit, adjusts the adjustable damping of corresponding wavelength, and the section of the striding power that makes described each wavelength is in the section of striding node normal power scope.
18. the system of optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 15, 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 described light detection unit, adjusts the adjustable damping of corresponding wavelength, and the input power that makes described each wavelength is in normal received power scope.
19. the system of optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 15, also comprises:
The node output power control device is used for before the wave power adjusting device is adjusted on described the power output of turn-offing node; On described, after the adjustment of wave power adjusting device, open the power output of node.
20. the system of optical power adjustment is characterized in that in the wavelength-division network as claimed in claim 15, also comprises:
Normal received power deriving means is used for obtaining described normal received power scope by reading the receiving terminal single board information; The described normal received power scope that gets access to is sent to described 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 |
| CN102281110A (en) * | 2011-07-29 | 2011-12-14 | 华为技术有限公司 | Methods and devices for regulating optical power |
| CN103095370A (en) * | 2011-11-03 | 2013-05-08 | 华为技术有限公司 | Method and controller for wavelength division multiplexing optical network expanding adjustment and detection |
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