CN101729152A - Device and method for realizing multi-channel relay - Google Patents
Device and method for realizing multi-channel relay Download PDFInfo
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- CN101729152A CN101729152A CN200810171983A CN200810171983A CN101729152A CN 101729152 A CN101729152 A CN 101729152A CN 200810171983 A CN200810171983 A CN 200810171983A CN 200810171983 A CN200810171983 A CN 200810171983A CN 101729152 A CN101729152 A CN 101729152A
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Abstract
The invention discloses a device and a method for realizing multi-channel relay, which belong to the field of communication. The device comprises an auxiliary optical generator, a first-stage wavelength converter and a second-stage wavelength converter. The method comprises the following steps of: acquiring a first auxiliary optical signal and an input optical signal; performing wavelength conversion on the input optical signal by the first auxiliary optical signal to obtain an intermediate optical signal; acquiring a second auxiliary optical signal and the intermediate optical signal; and performing the wavelength conversion on the intermediate optical signal by the second auxiliary optical signal to obtain an output optical signal. The method provided by the invention can perform the wavelength conversion and wavelength maintenance on the input optical signal to obtain the light with required wavelength; and simultaneously, optical relay resources in a multi-channel relay device can be used by a plurality of channels at the same time, which saves resources and reduces the overall cost of the device.
Description
Technical field
The present invention relates to the communications field, particularly a kind of apparatus and method that realize multi-channel relay.
Background technology
Along with the development of optical fiber telecommunications system, when wavelength transmits by multi-channel system or handles, need carry out wavelength conversion relaying or wavelength to the light signal of input and keep relaying.Multi-channel system realizes that by the full optical relay resource of node wavelength conversion and wavelength keep function, and wherein, full optical relay resource comprises fill-in light and wavelength conversion device.
In the prior art, at first to resolve into the light signal of single passage to multichannel light signal demultiplexing; And then each passage is carried out single channel operate.Wherein, need the independent full optical relay resource of each single channel configuration promptly be needed to each channel arrangement independent fill-in light and wavelength conversion device.
There is following shortcoming and defect at least in above-mentioned prior art:
Because prior art is that each passage is operated separately, dispose the optical relay resource separately for each passage, must cause the quantity of optical relay resource too much, promptly the quantity of fill-in light and wavelength conversion device is a lot, the service efficiency of each fill-in light and wavelength conversion device is low, the whole cost height of device.And, make and use underaction because the optical relay resource of each passage can only be used for proprietary passage.
Summary of the invention
In order to improve the service efficiency of the optical relay resource in the multi-channel relay device, reduce the whole cost of multi-channel relay device, the embodiment of the invention provides a kind of apparatus and method that realize multi-channel relay.Described technical scheme is as follows:
On the one hand, provide a kind of device of realizing multi-channel relay, described device comprises: fill-in light generator, first order wavelength shifter and second level wavelength shifter; Wherein,
Described fill-in light generator is used to produce the first via optical auxiliary signal and the second road optical auxiliary signal, and sends described first via optical auxiliary signal and described the second road optical auxiliary signal;
Described first order wavelength shifter is used to receive the described first via optical auxiliary signal that input optical signal and described fill-in light generator send; Utilize described first via optical auxiliary signal that described input optical signal is carried out wavelength conversion, obtain the intermediate light signal; And send described intermediate light signal;
Described second level wavelength shifter is used to receive the second road optical auxiliary signal that described intermediate light signal and described fill-in light generator send; Utilize described the second road optical auxiliary signal that described intermediate light signal is carried out wavelength conversion, obtain exporting light signal.
On the other hand, a kind of method that realizes multi-channel relay, described method comprises:
Obtain first via optical auxiliary signal and input optical signal;
Utilize described first via optical auxiliary signal that described input optical signal is carried out wavelength conversion, obtain the intermediate light signal;
Obtain the second road optical auxiliary signal and described intermediate light signal;
Utilize described the second road optical auxiliary signal that described intermediate light signal is carried out wavelength conversion, obtain exporting light signal.
The beneficial effect of the technical scheme that the embodiment of the invention provides is:
Can carry out wavelength conversion or wavelength to the light signal of input by device provided by the invention and method provided by the invention keeps, obtain the light signal of required wavelength, optical relay resource in the multi-channel relay device provided by the invention can be used simultaneously for a plurality of passages simultaneously, save the optical relay resource in the multi-channel relay device, reduced the whole cost of device.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the principle of device schematic diagram of the realization multi-channel relay that provides of the embodiment of the invention 1;
Fig. 2 is the device schematic diagram of the realization multi-channel relay that provides of the embodiment of the invention 1;
Fig. 3 is the device schematic diagram of the fill-in light generator that provides of the embodiment of the invention 1;
Fig. 4 is the method flow schematic diagram of the realization multi-channel relay that provides of the embodiment of the invention 2;
Fig. 5 is the device schematic diagram of the realization multi-channel relay that provides of the embodiment of the invention 3;
Fig. 6 is that the control switch that provides of the embodiment of the invention 3 is realized the control schematic diagram to the flow direction of middle light signal;
Fig. 7 is the method flow schematic diagram of the realization multi-channel relay that provides of the embodiment of the invention 4;
Fig. 8 is the device schematic diagram of the realization multi-channel relay that provides of the embodiment of the invention 5;
Fig. 9 is the method flow schematic diagram of the realization multi-channel relay that provides of the embodiment of the invention 6;
Figure 10 is the device schematic diagram of the realization multi-channel relay that provides of the embodiment of the invention 7;
Figure 11 is the method flow schematic diagram of the realization multi-channel relay that provides of the embodiment of the invention 8.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.Obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention 1 provides a kind of device of realizing multi-channel relay, and this device can provide relaying for the some or all of passage through node.The embodiment of the invention can improve the service efficiency of fill-in light and wavelength shifter.
For the device that the embodiment of the invention is provided is elaborated, as shown in Figure 1, the embodiment of the invention provides the principle of device schematic diagram of realizing multi-channel relay, for the west to going into/light signal that east orientation goes out, achieve a butt joint the 1st wavelength conversion of the light signal received of SOA1 (Semiconductor OpticalAmplifier, semiconductor optical amplifier); SOA2 realizes the 2nd wavelength conversion to light signal, and as shown in Figure 1, passage 1 and passage 2 shared these SOA are right, and passage 1 and passage 2 shared fill-in lights are to (optical auxiliary signal 1 and optical auxiliary signal 2).And, realize the wavelength conversion and the wavelength of input optical signal are kept two kinds of relay functions by control to optical switch.For example:
As shown in Figure 1, the light signal of wavelength 2 is input among the SOA1, optical auxiliary signal 1 is by among the optical branching device 1 input SOA1, SOA1 utilizes the light signal of 1 pair of wavelength 2 of optical auxiliary signal to carry out wavelength conversion, obtain the light signal of wavelength 1, after SOA2 receives the light signal of wavelength 1, according to the folding situation of its optical switch 2, realization keeps two kinds of functions of relaying to the wavelength conversion and the wavelength of the light signal of wavelength 2, referring to as follows:
(1) if optical switch 2 closure, then optical auxiliary signal 2 enters SOA2 by optical branching device 2, utilize the light signal of the 2 pairs of wavelength 1 of optical auxiliary signal that receive to carry out wavelength conversion among the SOA2, obtain and the light signal of output wavelength 2, thereby the wavelength of light signal of having realized the wavelength 2 of input by SOA1, SOA2 and closed optical switch 2 keeps function;
(2) if optical switch 2 disconnects, then optical auxiliary signal 2 can't enter SOA2 by optical branching device 2, then SOA2 can not receive optical auxiliary signal 2, therefore can't carry out wavelength conversion to the light signal of wavelength 1, the light signal of SOA2 output wavelength 1 then, thus realized wavelength conversion function by the optical switch 2 of SOA1, SOA2 and disconnection to the light signal of the wavelength 2 of input.
In like manner, as shown in Figure 1, the light signal of the input wavelength 1 of passage 2 correspondences, the light signal of this wavelength 1 realizes that by first order wavelength shifter SOA1, second level wavelength shifter SOA2 and optical switch 1 wavelength keeps, the relay function of conversion, its processing procedure and above-mentioned passage 1 are similar, repeat no more.
Discuss based on above-mentioned principle, referring to Fig. 2, the embodiment of the invention provides a kind of device schematic diagram of realizing multi-channel relay.As shown in Figure 2: this device comprises: fill-in light generator, first order wavelength shifter and second level wavelength shifter; Wherein,
The fill-in light generator is used to produce the first via optical auxiliary signal and the second road optical auxiliary signal, and sends the first via optical auxiliary signal and the second road optical auxiliary signal;
First order wavelength shifter is used to receive the first via optical auxiliary signal that input optical signal and fill-in light generator send; Utilize first via optical auxiliary signal that input optical signal is carried out wavelength conversion, obtain the intermediate light signal; And transmission intermediate light signal;
Second level wavelength shifter is used to receive the second road optical auxiliary signal that intermediate light signal and fill-in light generator send; Utilize the second road optical auxiliary signal that middle light signal is carried out wavelength conversion, obtain exporting light signal.
Wherein, referring to Fig. 3, the fill-in light generator that the embodiment of the invention provides comprises when specific implementation: fill-in light generation unit and distribution array element; Wherein,
The fill-in light generation unit is used to produce optical auxiliary signal;
Distribute array element, be used to receive the optical auxiliary signal that the fill-in light generation unit produces, produce the first via optical auxiliary signal and the second road optical auxiliary signal.
The device of the realization multi-channel relay that the embodiment of the invention provides, carry out wavelength conversion or wavelength maintenance by light signal to input, obtain the light signal output of required wavelength, optical relay resource in the multi-channel relay device provided by the invention can be used simultaneously for the light signal of a plurality of passages simultaneously, save the optical relay resource in the multi-channel relay device, reduced the whole cost of device.
On the device basic that the embodiment of the invention 1 provides, the embodiment of the invention 2 provides a kind of method that realizes multi-channel relay, referring to Fig. 4, and the specific implementation flow chart of this method:
101: obtain first via optical auxiliary signal and input optical signal;
Wherein, obtain the first via optical auxiliary signal of input optical signal and the generation of fill-in light generator by first order wavelength shifter.
102: utilize first via optical auxiliary signal that input optical signal is carried out wavelength conversion, obtain the intermediate light signal;
Wherein, the first via optical auxiliary signal that first order wavelength shifter utilizes step 101 to obtain carries out wavelength conversion to input optical signal, obtains the intermediate light signal, and output intermediate light signal.
103: obtain the second road optical auxiliary signal and intermediate light signal;
Wherein, second level wavelength shifter obtains the second road optical auxiliary signal of fill-in light generator generation and the intermediate light signal of first order wavelength shifter output.
104: utilize the second road optical auxiliary signal that middle light signal is carried out wavelength conversion, obtain exporting light signal.
Wherein, the second road optical auxiliary signal that second level wavelength shifter utilizes step 103 to obtain carries out wavelength conversion to the intermediate light signal that obtains, and obtains exporting light signal.
The method of the realization multi-channel relay that the embodiment of the invention provides, carry out wavelength conversion through first order wavelength shifter and second level wavelength shifter respectively by light signal to input, obtain the light signal of required wavelength, optical relay resource in the multi-channel relay device provided by the invention can be used simultaneously for the light signal of a plurality of passages simultaneously, save the optical relay resource in the multi-channel relay device, reduced the whole cost of device.
Referring to Fig. 5, the embodiment of the invention 3 provides a kind of device of realizing multi-channel relay, this device comprises: fill-in light generator, first order wavelength shifter and second level wavelength shifter, wherein, first order wavelength shifter comprises: a MEMS (Micro Electronic Mechanical System, MEMS (micro electro mechanical system)) module, the 2nd MEMS module, at least one first order optical transponder unit SOA1x, wherein
The one MEMS module is used to receive the first via optical auxiliary signal that the fill-in light generator sends, and first via optical auxiliary signal is sent at least one first order optical transponder unit of appointment;
Wherein, a MEMS module sends to the first via optical auxiliary signal that receives in the first order optical transponder unit of appointment according to the order of central controller under the control of central controller.For example, central controller sends orders to a MEMS module: the optical auxiliary signal in the first via optical auxiliary signal 2 is sent among the first order optical transponder unit SOA12, and then first order optical transponder unit SOA12 receives the first via optical auxiliary signal 2 that is sent by a MEMS module under the order control of central controller; For another example, central controller sends orders to a MEMS module: the optical auxiliary signal X in the first via optical auxiliary signal is sent among the first order optical transponder unit SOA1P, and then first order optical transponder unit SOA1P receives the first via optical auxiliary signal X that is sent by a MEMS module under the order control of central controller.
Promptly, in view of can be for there be the light signal of a plurality of wavelength in first via optical auxiliary signal, by a MEMS module under the control of central controller, the order according to central controller of the optical auxiliary signal of each wavelength can be sent to respectively in the first order optical transponder unit of first order wavelength shifter appointment.
The 2nd MEMS module is used to receive input optical signal, input optical signal is sent at least one first order optical transponder unit of appointment;
Wherein, with a MEMS module class seemingly, the 2nd MEMS module sends to the input optical signal that receives in the first order optical transponder unit of appointment according to the order of central controller.For example, central controller sends order to the 2nd MEMS module, and the input optical signal of the wavelength in the input optical signal 1 is sent among the first order optical transponder unit SOA12, and then first order optical transponder unit SOA12 receives the input optical signal of wavelength 1; For another example, central controller sends order to the 2nd MEMS module, and the input optical signal of the wavelength Y in the input optical signal is sent among the first order optical transponder unit SOA1P, and then first order optical transponder unit SOA1P receives the input optical signal of wavelength Y.
That is,,, send to respectively in the first order optical transponder unit of first order wavelength shifter appointment the order of the light signal of each wavelength according to central controller in view of can be for there be the light signal of a plurality of wavelength in input optical signal.
First order optical transponder unit SOA1x, be used to receive the first via optical auxiliary signal of MEMS module transmission and the input optical signal that the 2nd MEMS module sends, the first via optical auxiliary signal that utilization receives carries out wavelength conversion to the input optical signal that receives, and obtains the intermediate light signal; And transmission intermediate light signal.
Wherein, there is at least one first order optical transponder unit in first order wavelength shifter, each optical transponder unit is at the input optical signal that receives, and can utilize the optical auxiliary signal that receives that the input optical signal of this wavelength is carried out wavelength conversion, obtains the light signal after the conversion.For example, first order optical transponder unit SOA12 can utilize the input optical signal of wavelength 1 of 2 pairs of receptions of optical auxiliary signal of reception to carry out wavelength conversion, obtains the light signal of wavelength 2.
Correspondingly, second level wavelength shifter comprises: the 3rd MEMS module, the 4th MEMS module, and at least one second level optical transponder unit SOA2x, and the number of at least one first order optical transponder unit SOA1x is identical with the number of at least one second level optical transponder unit SOA2x, wherein
The 3rd MEMS module is used to receive the second road optical auxiliary signal that the fill-in light generator sends, and the second road optical auxiliary signal is sent among at least one second level optical transponder unit SOA2x of appointment;
Wherein, under the control of central controller, the second road optical auxiliary signal that will receive according to the order of central controller sends in the second level optical transponder unit of appointment during the 3rd MEMS module.For example, central controller sends order to the 3rd MEMS module, and the optical auxiliary signal in the second road optical auxiliary signal 3 is sent among the optical transponder unit SOA23 of the second level, and then optical transponder unit SOA23 in the second level receives the second road optical auxiliary signal 3;
That is,,, send to respectively in the second level optical transponder unit of second level wavelength shifter appointment the order of the light signal of each wavelength according to central controller in view of there is the optical auxiliary signal of a plurality of wavelength in the second road optical auxiliary signal.
Second level optical transponder unit SOA2x, be used to receive the intermediate light signal of corresponding first order optical transponder unit SOA1x transmission and the second road optical auxiliary signal that the 3rd MEMS module sends, utilize the second road optical auxiliary signal that receives that the intermediate light signal that receives is carried out wavelength conversion, obtain the light signal after the conversion, and send the light signal after the conversion;
The 4th MEMS module is used to receive the light signal after the conversion that second level optical transponder unit sends, and the light signal after the conversion that receives is distributed, and obtains exporting light signal.
Further; When the wavelength conversion of input optical signal by first order wavelength shifter can access the optical signal of required wavelength; The intermediate light signal output that then can be directly input optical signal be obtained through the wavelength conversion of first order wavelength shifter; Thereby obtain output optical signal; In order to improve the flexibility of the device that the embodiment of the invention provides; As shown in Figure 6; Only needing to arrange after the first order optical transponder unit in the first order wavelength shifter gauge tap realizes; Namely by the folding to gauge tap; Realization is to the control of the flow direction of middle optical signal; Correspondingly
When control switch was closed, the intermediate light signal was sent in the optical transponder unit of the second level;
When control switch disconnected, the intermediate light signal was sent in the 4th MEMS module, thereby realized the direct output of the intermediate light signal that conversion obtains to process first order wavelength shifter.
The device of the realization multi-channel relay that the embodiment of the invention provides, carry out wavelength conversion or wavelength maintenance by light signal to input, obtain the light signal output of required wavelength, optical relay resource in the multi-channel relay device that the while embodiment of the invention provides can be used simultaneously for the light signal of a plurality of passages, save the optical relay resource in the multi-channel relay device, reduced the whole cost of device, further, by control switch is set, improved the use flexibility of device.
Referring to Fig. 7, on the device basic that the foregoing description 3 provides, the embodiment of the invention 4 provides a kind of method that realizes multi-channel relay, sees for details as follows:
201: obtain first via optical auxiliary signal and input optical signal;
Wherein, first order wavelength shifter obtains first via optical auxiliary signal and input optical signal (wavelength 1, the wavelength 2 that the fill-in light generator produces ...).
Wherein, the fill-in light generator comprises the fill-in light generation unit and distributes array element;
The fill-in light generation unit is used to produce optical auxiliary signal; Distribute array element, be used to receive the optical auxiliary signal that the fill-in light generation unit produces, produce the first via optical auxiliary signal and the second road optical auxiliary signal.The output of every road fill-in light is controlled by branch ligand array separately, and divides ligand array by being configured by central controller.
202: respectively first via optical auxiliary signal, the input optical signal that obtains distributed the first via optical auxiliary signal that obtains distributing and the input optical signal of distribution;
Wherein, a MEMS module is distributed the first via optical auxiliary signal after obtaining distributing to the first via optical auxiliary signal that receives under the control of central controller; The 2nd MEMS module is distributed the input optical signal after obtaining distributing to the input optical signal that receives under the control of central controller.
203: utilize the first via optical auxiliary signal that distributes that the input optical signal that distributes is carried out wavelength conversion, obtain the intermediate light signal;
For example, suppose that the first order optical transponder unit SOA13 in the first order wavelength shifter receives the first via optical auxiliary signal 1 of a MEMS module assignment, and receive the input optical signal of the wavelength 2 of the 2nd MEMS module assignment, then this SOA13 utilizes the input optical signal of 1 pair of wavelength 2 of first via optical auxiliary signal to carry out wavelength conversion, obtains the intermediate light signal of wavelength 1.In like manner, each first order optical transponder unit wavelength conversion of the input optical signal received that can achieve a butt joint in the first order wavelength shifter, method is similar, repeats no more.
204: obtain the second road optical auxiliary signal and intermediate light signal;
Wherein, second level wavelength shifter obtains the second road optical auxiliary signal of fill-in light generator generation and the intermediate light signal that first order wavelength shifter sends.
205: the second road optical auxiliary signal that obtains is distributed the second road optical auxiliary signal that obtains distributing;
Wherein, the second road optical auxiliary signal to obtaining under the control of central controller of the 3rd MEMS module in the wavelength shifter of the second level distributes the second road optical auxiliary signal that obtains distributing.
206: the second road optical auxiliary signal that utilize to distribute carries out wavelength conversion to the intermediate light signal that obtains, and obtains the light signal after the conversion;
For example, suppose that the second level optical transponder unit SOA23 in the wavelength shifter of the second level receives the second road optical auxiliary signal 3 of the 3rd MEMS module assignment, and the intermediate light signal of the wavelength 1 that the first order optical transponder unit SOA13 that receives self correspondence sends, SOA23 utilizes the intermediate light signal of the 3 pairs of wavelength 1 of the second road optical auxiliary signal that receive, and carries out the light signal that conversion obtains wavelength 3.In like manner, each second level optical transponder unit wavelength conversion of the intermediate light signal received that can achieve a butt joint in the wavelength shifter of the second level, method is similar, repeats no more.
207: the light signal after the conversion is distributed, obtain exporting light signal.
Wherein, the light signal after the conversion that the 4th MEMS module in the wavelength shifter of the second level obtains each second level optical transponder unit conversion distributes, thereby obtains exporting light signal.
Further, in order to improve the application flexibility of the method that the embodiment of the invention provides, in the first order wavelength shifter, after each first order optical transponder unit, control switch is set, thereby realize intermediate light signal flow that each first order optical transponder unit is obtained to control, as shown in Figure 6, for example:
When the control switch of SOA13 was closed, then the intermediate light signal of the wavelength 1 that obtains of SOA13 conversion sent among the SOA23 in the second level wavelength shifter of SOA13 correspondence;
When the control switch of SOA13 disconnected, then the intermediate light signal of the wavelength 1 that obtains of SOA13 conversion sent in the 4th MEMS module in the wavelength shifter of the second level;
In like manner, each first order optical transponder unit intermediate light signal that self conversion can be obtained sends to the 4th MEMS module; Correspondingly, the 4th MEMS module obtains exporting light signal to the intermediate light signal allocation that the first order optical transponder unit that receives sends.
The method of the realization multi-channel relay that the embodiment of the invention provides, by being input to, the light signal of importing carries out wavelength conversion in first order wavelength shifter and the second level wavelength shifter respectively, obtain the light signal output of required wavelength, save the optical relay resource in the multi-channel relay device, reduced the whole cost of device; Further, by control switch is set, improved the use flexibility of method.
Referring to Fig. 8, the embodiment of the invention 5 provides a kind of device of realizing multi-channel relay, this device comprises: fill-in light generator, first order wavelength shifter and second level wavelength shifter, wherein, first order wavelength shifter comprises: first order light filter array, a first order optical transponder unit of supporting the multi-wavelength conversion;
First order light filter array is used to receive input optical signal, and input optical signal is carried out filtering, sends filtered input optical signal;
First order optical transponder unit, the first via optical auxiliary signal that input optical signal after being used to accept filter and fill-in light generator send, utilize the first via optical auxiliary signal that receives that filtered input optical signal is carried out wavelength conversion, obtain the intermediate light signal, and send the intermediate light signal;
Wherein, in the device that the embodiment of the invention provides, only there is a first order optical transponder unit in first order wavelength shifter, and this first order optical transponder unit is supported the multi-wavelength conversion, so the first order optical transponder unit that its performance requirement is compared among the embodiment 3 can be than higher.
Correspondingly, second level wavelength shifter comprises: second level light filter array, a second level optical transponder unit of supporting the multi-wavelength conversion, third level light filter array; Wherein,
Second level light filter array is used to receive the intermediate light signal, and middle light signal is carried out filtering, sends filtered intermediate light signal;
Second level optical transponder unit, the second road optical auxiliary signal that intermediate light signal after being used to accept filter and fill-in light generator send, utilize the second road optical auxiliary signal that receives that filtered intermediate light signal is carried out wavelength conversion, obtain the light signal after the conversion, and send the light signal after the conversion;
Wherein, in the device that the embodiment of the invention provides, only there is a second level optical transponder unit in second level wavelength shifter, and this second level optical transponder unit is supported the multi-wavelength conversion, so the second level optical transponder unit that its performance requirement is compared among the embodiment 3 can be higher.
Third level light filter array is used to receive the light signal that obtains after the optical transponder unit conversion of the second level, to the optical signal filtering after the conversion, obtains exporting light signal.
The device of the realization multi-channel relay that the embodiment of the invention provides, carry out wavelength conversion by light signal to input, obtain the light signal output of required wavelength, the multi-channel relay device that the embodiment of the invention provides has also carried out the light signal that filtering has obtained not having clutter respectively to input optical signal, intermediate light signal and output light signal.
Referring to Fig. 9, on the device basic that the foregoing description 5 provides, the embodiment of the invention 6 provides a kind of method that realizes multi-channel relay, sees for details as follows:
301: obtain first via optical auxiliary signal and input optical signal;
Wherein, first order wavelength shifter obtains first via optical auxiliary signal and input optical signal (wavelength 1, the wavelength 2 that the fill-in light generator produces ...);
Wherein, the fill-in light generator comprises the fill-in light generation unit and distributes array element; The fill-in light generation unit is used to produce optical auxiliary signal; Distribute array element, be used to receive the optical auxiliary signal that the fill-in light generation unit produces, produce the first via optical auxiliary signal and the second road optical auxiliary signal.The output of every road fill-in light is controlled by branch ligand array separately, and divides ligand array by being configured by central controller.
302: the input optical signal that obtains is carried out filtering, obtain filtered input optical signal;
Wherein, the first order light filter array in the first order wavelength shifter carries out filtering to the input optical signal that obtains, and mainly is the unnecessary veiling glare of filtering, can will not need to carry out the light signal filtering of conversion, thereby obtain filtered input optical signal.
303: utilize the first via optical auxiliary signal that obtains that filtered input optical signal is carried out wavelength conversion, obtain the intermediate light signal;
Wherein, input optical signal and first via optical auxiliary signal after first order optical transponder unit SOA1 accepts filter in the first order wavelength shifter, utilize first via optical auxiliary signal that the input optical signal that receives is carried out wavelength conversion, obtain the intermediate light signal, the first order optical transponder unit SOA1 that the embodiment of the invention provides supports a plurality of wavelength conversions, therefore, both can realize in this first order optical transponder unit SOA1 that to filtered wavelength be the intermediate light signal that 1 input optical signal conversion obtains wavelength 2, can realize again that to filtered wavelength be the intermediate light signal that 3 input optical signal conversion obtains wavelength 4.
304: obtain the second road optical auxiliary signal and intermediate light signal;
Wherein, second level wavelength shifter obtains the second road optical auxiliary signal of fill-in light generator transmission and the intermediate light signal that first order wavelength shifter sends.
305: the intermediate light signal that obtains is carried out filtering, obtain filtered intermediate light signal;
Wherein, the second level light filter array in the wavelength shifter of the second level carries out filtering to the intermediate light signal that receives, and obtains filtered intermediate light signal.
306: utilize the second road optical auxiliary signal obtain that filtered intermediate light signal is carried out wavelength conversion, obtain the light signal after the conversion;
Wherein, second level optical transponder unit SOA2 in the wavelength shifter of the second level supports a plurality of wavelength conversions, SOA2 utilizes the second road optical auxiliary signal of the fill-in light generator generation that receives that the filtered intermediate light signal of second level light filter array that receives is carried out wavelength conversion, thereby obtains the light signal after the conversion.
307: the light signal after the conversion is carried out filtering, obtain exporting light signal;
Wherein, the third level light filter array in the wavelength shifter of the second level receives the light signal after the SOA2 conversion, the light signal after this conversion is carried out filtering, thereby obtain exporting light signal.
The method that the embodiment of the invention provides, both can realize function to the wavelength conversion relaying, can realize that again wavelength keeps relay function, for example: after the light signal of supposition wavelength 1 installs through this, still the light signal that needs to obtain wavelength 1 at output, need at first become the light signal of wavelength 1 the intermediate light signal of wavelength 3 this moment in SOA1, again the intermediate light signal of wavelength 3 is become the light signal of wavelength 1 in SOA2, thereby realize that wavelength keeps function, the process of its specific implementation process and above-mentioned wavelength conversion is similar, repeats no more.
The method that the embodiment of the invention provides, also be applicable to simultaneously the situation that the light signal to a plurality of wavelength of different transmission directions carries out wavelength conversion, maintenance, promptly can be simultaneously the light signal of a plurality of different transmission directions be transformed to required wavelength through the two-stage wavelength shifter, method is similar, repeats no more.
Because the optical transponder unit in the wavelength shifters at different levels that the embodiment of the invention provides is supported the multichannel wavelength conversion, therefore, only need an optical transponder unit is set in wavelength shifters at different levels, thereby reduced the number of optical transponder unit, improved the service efficiency of optical transponder unit.
The method of the realization multi-channel relay that the embodiment of the invention provides, by input optical signal is carried out the two-stage wavelength conversion, realized that light signal to input carries out wavelength conversion or wavelength and keeps two kinds of functions, and input optical signal, intermediate light signal and output light signal have been carried out the light signal that filtering has obtained not having clutter respectively.
Referring to Figure 10, the embodiment of the invention 7 provides a kind of device of realizing multi-channel relay, this device comprises: fill-in light generator, first order wavelength shifter and second level wavelength shifter, and wherein, first order wavelength shifter comprises: dispersed modules, at least one first order optical transponder unit;
Dispersed modules, be used to receive input optical signal, input optical signal is carried out filtering, filtered input optical signal is disperseed, input optical signal after obtaining disperseing sends to the input optical signal after disperseing at least one first order optical transponder unit of appointment;
Wherein, above-mentioned dispersed modules can be passed through light filter array+AWG (Array Waveguide Grating when specific implementation, array waveguide grating) forms, wherein, the light filter array is used under the control of central controller the input optical signal that receives being carried out filtering, AWG is used under the control of central controller the filtered input optical signal of light filter array being disperseed, the input optical signal after obtaining disperseing.
Dispersed modules is under the control of central controller, and the input optical signal after will disperseing according to the order of central controller sends in the first order optical transponder unit of appointment.For example, central controller sends order to dispersed modules, the input optical signal of the wavelength 2 in the input optical signal after disperseing is sent among the first order optical transponder unit SOA12, and then first order optical transponder unit SOA12 receives the input optical signal of the wavelength 2 that is sent by dispersed modules.
First order optical transponder unit, be used to receive the first via optical auxiliary signal that input optical signal after the dispersion that dispersed modules sends and fill-in light generator send, utilize the first via optical auxiliary signal that receives that the input optical signal after disperseing is carried out wavelength conversion, obtain the intermediate light signal, and send the intermediate light signal.
Correspondingly, second level wavelength shifter comprises: MEMS module, at least one second level optical transponder unit, polymerization module; Wherein,
The MEMS module is used to receive the intermediate light signal, the intermediate light signal is sent at least one second level optical transponder unit of appointment;
Wherein, under the control of central controller, the intermediate light signal that receives is sent in the second level optical transponder unit of appointment during the MEMS module according to the order of central controller.For example, central controller sends order to the 3rd MEMS module, the light signal of the wavelength in the intermediate light signal 3 is sent among the optical transponder unit SOA23 of the second level, and then optical transponder unit SOA23 in the second level receives the light signal of the wavelength 3 that is sent by the 3rd MEMS module under the control of central controller;
Promptly, in view of the intermediate light signal that is sent by first order wavelength shifter is the light signal that has a plurality of wavelength, the MEMS module is under the control of central controller, with the order of the intermediate light signal of each wavelength, send to respectively in the second level optical transponder unit of second level wavelength shifter appointment according to central controller.
Second level optical transponder unit, be used to receive the intermediate light signal of MEMS module transmission and the second road optical auxiliary signal that the fill-in light generator sends, utilize the second road optical auxiliary signal that receives that the intermediate light signal that the MEMS module sends is carried out wavelength conversion, obtain the light signal after the conversion, and send the light signal after the conversion.
The polymerization module is used for the light signal after the receiving conversion, and the light signal after the conversion is carried out polymerization, and the light signal after the polymerization is carried out filtering, obtains exporting light signal;
Wherein, this polymerization module can be formed by AWG+ light filter array when specific implementation, and AWG is used for the light signal after the conversion that receives is carried out polymerization, and the light filter array is used for the light signal after the AWG polymerization is carried out filtering, thereby obtains exporting light signal.
Wherein, owing to comprised MEMS in the wavelength shifter of the second level in the device that the embodiment of the invention provides, this MEMS can realize under the control of central controller in the second level optical transponder unit that is assigned to appointment of the intermediate light signal that will receive, therefore, the number of at least one second level optical transponder unit of the number of at least one first order optical transponder unit of first order wavelength shifter and second level wavelength shifter can be different in the embodiment of the invention generator.
The device of the realization multi-channel relay that the embodiment of the invention provides, carry out wavelength conversion by light signal to input, obtain the light signal output of required wavelength, optical relay resource in the multi-channel relay device that the while embodiment of the invention provides can be used simultaneously for the light signal of a plurality of passages, saved the optical relay resource in the multi-channel relay device, reduced the whole cost of device, and between the two-stage wavelength shifter, introduced the MEMS module, realized calling flexibly two-stage SOA.
Referring to Figure 11, on the device basic that the foregoing description 7 provides, the embodiment of the invention 8 provides a kind of method that realizes multi-channel relay, sees for details as follows:
401: obtain first via optical auxiliary signal and input optical signal;
Wherein, first order wavelength shifter obtains first via optical auxiliary signal and input optical signal (wavelength 1, the wavelength 2 that the fill-in light generator produces ...);
Wherein, the fill-in light generator comprises the fill-in light generation unit and distributes array element; The fill-in light generation unit is used to produce optical auxiliary signal; Distribute array element, be used to receive the optical auxiliary signal that the fill-in light generation unit produces, produce the first via optical auxiliary signal and the second road optical auxiliary signal.The output of every road fill-in light is controlled by branch ligand array separately, and divides ligand array by being configured by central controller.
402: input optical signal is carried out filtering disperse, obtain the input optical signal after filtering disperses;
Wherein, the dispersed modules in the first order wavelength shifter is carried out the filtering dispersion to the input optical signal that receives, and obtains the input optical signal after filtering disperses; This dispersed modules can be passed through light filter array+array waveguide grating AWG and form when specific implementation, wherein, the light filter array is used under the control of central controller the input optical signal that receives being carried out filtering, AWG is used under the control of central controller the filtered input optical signal of light filter array being disperseed, the input optical signal after obtaining disperseing.
403: utilize the input optical signal after the first via optical auxiliary signal that obtains disperses filtering to carry out wavelength conversion, obtain the intermediate light signal;
Wherein, suppose that it is 2 input optical signal that first order optical transponder unit SOA12 in the first order wavelength shifter receives wavelength that dispersed modules sends, and receive the first via optical auxiliary signal 1 that the fill-in light generator sends, then to utilize 1 pair of wavelength of first via optical auxiliary signal be that 2 input optical signal carries out wavelength conversion to SOA12, obtain the intermediate light signal of wavelength 1, in like manner, each first order optical transponder unit wavelength conversion of the input optical signal received that can achieve a butt joint in the first order wavelength shifter, method is similar, repeats no more.
404: obtain the second road optical auxiliary signal and intermediate light signal;
Wherein, second level wavelength shifter obtains the second road optical auxiliary signal of fill-in light generator transmission and the intermediate light signal that first order wavelength shifter sends.
405: the intermediate light signal that obtains is distributed the intermediate light signal that obtains distributing;
Wherein, the MEMS module in the wavelength shifter of the second level is distributed this intermediate light signal that obtains after receiving the intermediate light signal of first order wavelength shifter transmission, thus the intermediate light signal that obtains distributing.
406: utilize the second road optical auxiliary signal obtain that the intermediate light signal that distributes is carried out wavelength conversion, obtain the light signal after the conversion;
Wherein, suppose that the second level optical transponder unit SOA23 in the wavelength shifter of the second level receives the intermediate light signal of MEMS module assigned wavelength 1 under the control of central controller, and receive the second road fill-in light 2 that the fill-in light generator sends, utilize the intermediate light signal of 2 pairs of wavelength 1 of the second road fill-in light to carry out wavelength conversion, obtain the light signal after the conversion of wavelength 2.In like manner, each second level optical transponder unit wavelength conversion of the intermediate light signal received that can achieve a butt joint in the wavelength shifter of the second level, method is similar, repeats no more.
407: the light signal after the conversion is carried out polymerization filtering, obtain exporting light signal;
Wherein, after light signal after the conversion that polymerization module in the wavelength shifter of the second level sends each second level optical transponder unit that receives carries out polymerization filtering, obtain exporting light signal, this polymerization module can be formed by AWG+ light filter array when specific implementation, AWG is used for the light signal after the conversion that receives is carried out polymerization, the light filter array is used for the light signal after the AWG polymerization is carried out filtering, thereby obtains exporting light signal.
Wherein, because the embodiment of the invention provides in the wavelength shifter of the second level and has comprised MEMS, this MEMS can realize under the control of central controller in the second level optical transponder unit that is assigned to appointment of the intermediate light signal that will receive, therefore, the number of a plurality of second level optical transponder unit of the number of a plurality of first order optical transponder units of first order wavelength shifter and second level wavelength shifter can be different in the embodiment of the invention generator.
The mode that the invention described above embodiment provides has realized the wavelength of the input optical signal of wavelength 2 is kept function, and in like manner as can be known, the method that the embodiment of the invention provides can also realize the function of wavelength conversion, and method is similar, repeats no more.The method that the embodiment of the invention provides also is applicable to the situation of simultaneously light signal of a plurality of different transmission directions being carried out wavelength maintenance, conversion, and method is similar, repeats no more.
The method that the embodiment of the invention provides, by input optical signal is carried out the two-stage wavelength conversion, realized the light signal of input is carried out wavelength conversion, two kinds of functions of wavelength maintenance, and between two-stage SOA, introduced MEMS, save the optical relay resource in the multi-channel relay device, reduced the whole cost of device.
The embodiment of the invention can utilize software to realize that corresponding software programs can be stored in the storage medium that can read, and calculates in hard disk, buffer memory or the CD of machine.
The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. a device of realizing multi-channel relay is characterized in that, described device comprises: fill-in light generator, first order wavelength shifter and second level wavelength shifter; Wherein,
Described fill-in light generator is used to produce the first via optical auxiliary signal and the second road optical auxiliary signal, and sends described first via optical auxiliary signal and described the second road optical auxiliary signal;
Described first order wavelength shifter is used to receive the described first via optical auxiliary signal that input optical signal and described fill-in light generator send; Utilize described first via optical auxiliary signal that described input optical signal is carried out wavelength conversion, obtain the intermediate light signal; And send described intermediate light signal;
Described second level wavelength shifter is used to receive the second road optical auxiliary signal that described intermediate light signal and described fill-in light generator send; Utilize described the second road optical auxiliary signal that described intermediate light signal is carried out wavelength conversion, obtain exporting light signal.
2. device as claimed in claim 1 is characterized in that, described first order wavelength shifter comprises: a MEMS module, the 2nd MEMS module, and at least one first order optical transponder unit, wherein,
A described MEMS module is used to receive the first via optical auxiliary signal that described fill-in light generator sends, and described first via optical auxiliary signal is sent at least one first order optical transponder unit;
Described the 2nd MEMS module is used to receive input optical signal, and described input optical signal is sent in described at least one first order optical transponder unit;
Described first order optical transponder unit, be used to receive the first via optical auxiliary signal of described MEMS module transmission and the input optical signal that described the 2nd MEMS module sends, utilize the described first via optical auxiliary signal that receives that the input optical signal that receives is carried out wavelength conversion, obtain the intermediate light signal; And send described intermediate light signal;
Correspondingly, described second level wavelength shifter comprises: the 3rd MEMS module, the 4th MEMS module, and at least one second level optical transponder unit, and the number of described at least one first order optical transponder unit is identical with the number of described at least one second level optical transponder unit, wherein
Described the 3rd MEMS module is used to receive the second road optical auxiliary signal that described fill-in light generator sends, and described the second road optical auxiliary signal is sent in described at least one second level optical transponder unit;
Described second level optical transponder unit, be used to receive the intermediate light signal of corresponding first order optical transponder unit transmission and the second road optical auxiliary signal that described the 3rd MEMS module sends, utilize the second road optical auxiliary signal that receives that the intermediate light signal that receives is carried out wavelength conversion, obtain the light signal after the conversion, and send the light signal after the described conversion;
Described the 4th MEMS module is used to receive the light signal after the conversion that described at least one second level optical transponder unit sends, and the light signal after the described conversion that receives is distributed, and obtains exporting light signal.
3. device as claimed in claim 1 is characterized in that, described first order wavelength shifter comprises: first order light filter array, a first order optical transponder unit of supporting the multi-wavelength conversion; Wherein,
Described first order light filter array is used to receive described input optical signal, and described input optical signal is carried out filtering, sends described filtered input optical signal;
Described first order optical transponder unit, be used to receive the first via optical auxiliary signal of described filtered input optical signal and the transmission of described fill-in light generator, utilize the described first via optical auxiliary signal that receives that described filtered input optical signal is carried out wavelength conversion, obtain the intermediate light signal, and send described intermediate light signal;
Correspondingly, described second level wavelength shifter comprises: second level light filter array, a second level optical transponder unit of supporting the multi-wavelength conversion, third level light filter array; Wherein,
Described second level light filter array is used to receive described intermediate light signal, and described intermediate light signal is carried out filtering, sends filtered intermediate light signal;
Described second level optical transponder unit, the second road optical auxiliary signal that intermediate light signal after being used to accept filter and described fill-in light generator send, utilize described the second road optical auxiliary signal that receives that described filtered intermediate light signal is carried out wavelength conversion, obtain the light signal after the conversion, and send the light signal after the described conversion;
Described third level light filter array is used to receive the light signal that obtains after the optical transponder unit conversion of the described second level, to the optical signal filtering after the described conversion, obtains exporting light signal.
4. device as claimed in claim 1 is characterized in that, described first order wavelength shifter comprises: dispersed modules, at least one first order optical transponder unit; Wherein,
Described dispersed modules, be used to receive described input optical signal, described input optical signal is carried out filtering, described filtered input optical signal is disperseed, input optical signal after obtaining disperseing sends to the input optical signal after the described dispersion in described at least one first order optical transponder unit;
Described first order optical transponder unit, be used to receive the first via optical auxiliary signal that input optical signal after the dispersion that described dispersed modules sends and described fill-in light generator send, the input optical signal of the described first via optical auxiliary signal that utilize to receive after to described dispersion carries out wavelength conversion, obtain the intermediate light signal, and send described intermediate light signal;
Correspondingly, described second level wavelength shifter comprises: MEMS module, at least one second level optical transponder unit, polymerization module; Wherein,
Described MEMS module is used to receive described intermediate light signal, and described intermediate light signal is sent in described at least one second level optical transponder unit;
Described second level optical transponder unit, be used to receive the intermediate light signal of described MEMS module transmission and the second road optical auxiliary signal that described fill-in light generator sends, utilize described the second road optical auxiliary signal that receives that the intermediate light signal that described MEMS module sends is carried out wavelength conversion, obtain the light signal after the conversion, and send the light signal after the described conversion;
Described polymerization module is used to receive the light signal after the described conversion, and the light signal after the described conversion is carried out polymerization, and the light signal after the described polymerization is carried out filtering, obtains exporting light signal.
5. device as claimed in claim 1 is characterized in that, described fill-in light generator comprises: fill-in light generation unit and distribution array element; Wherein,
Described fill-in light generation unit is used to produce optical auxiliary signal;
Described distribution array element is used to receive the optical auxiliary signal that described fill-in light generation unit produces, and produces the first via optical auxiliary signal and the second road optical auxiliary signal.
6. a method that realizes multi-channel relay is characterized in that, described method comprises:
Obtain first via optical auxiliary signal and input optical signal;
Utilize described first via optical auxiliary signal that described input optical signal is carried out wavelength conversion, obtain the intermediate light signal;
Obtain the second road optical auxiliary signal and described intermediate light signal;
Utilize described the second road optical auxiliary signal that described intermediate light signal is carried out wavelength conversion, obtain exporting light signal.
7. method as claimed in claim 6 is characterized in that, describedly utilizes described first via optical auxiliary signal that described input optical signal is carried out wavelength conversion, obtains the intermediate light signal, comprising:
Respectively described first via optical auxiliary signal, the input optical signal that obtains distributed the first via optical auxiliary signal that obtains distributing and the input optical signal of distribution;
The first via optical auxiliary signal that utilizes described distribution carries out wavelength conversion to the input optical signal of described distribution, obtains the intermediate light signal;
Correspondingly, describedly utilize described the second road optical auxiliary signal that described intermediate light signal is carried out wavelength conversion, obtain exporting light signal, comprising:
Described the second road optical auxiliary signal that obtains is distributed the second road optical auxiliary signal that obtains distributing;
Utilize the second road optical auxiliary signal of described distribution that the described intermediate light signal that obtains is carried out wavelength conversion, obtain the light signal after the conversion;
Light signal after the described conversion is distributed, obtain exporting light signal.
8. method as claimed in claim 6 is characterized in that, describedly utilizes described first via optical auxiliary signal that described input optical signal is carried out wavelength conversion, obtains the intermediate light signal, comprising:
The described input optical signal that obtains is carried out filtering, obtain filtered input optical signal;
Utilize the described first via optical auxiliary signal that obtains that described filtered input optical signal is carried out wavelength conversion, obtain the intermediate light signal;
Correspondingly, describedly utilize described the second road optical auxiliary signal that described intermediate light signal is carried out wavelength conversion, obtain exporting light signal, comprising:
The described intermediate light signal that obtains is carried out filtering, obtain filtered intermediate light signal;
Utilize described the second road optical auxiliary signal that obtains that described filtered intermediate light signal is carried out wavelength conversion, obtain the light signal after the conversion;
Light signal after the described conversion is carried out filtering, obtain exporting light signal.
9. method as claimed in claim 6 is characterized in that, describedly utilizes described first via optical auxiliary signal that described input optical signal is carried out wavelength conversion, obtains the intermediate light signal, comprising:
Described input optical signal is carried out filtering disperse, obtain the input optical signal after filtering disperses;
Utilize the input optical signal after the described first via optical auxiliary signal that obtains disperses described filtering to carry out wavelength conversion, obtain the intermediate light signal;
Correspondingly, describedly utilize described the second road optical auxiliary signal that described intermediate light signal is carried out wavelength conversion, obtain exporting light signal, comprising:
The described intermediate light signal that obtains is distributed the intermediate light signal that obtains distributing;
Utilize described the second road optical auxiliary signal that obtains that the intermediate light signal of described distribution is carried out wavelength conversion, obtain the light signal after the conversion;
Light signal after the described conversion is carried out polymerization filtering, obtain exporting light signal.
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| CN107078812A (en) * | 2014-10-01 | 2017-08-18 | 日本电气株式会社 | Node device and the method for control node equipment |
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