CN102262328B - All-optical wavelength/code type conversion device - Google Patents
All-optical wavelength/code type conversion device Download PDFInfo
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- CN102262328B CN102262328B CN201010185968.8A CN201010185968A CN102262328B CN 102262328 B CN102262328 B CN 102262328B CN 201010185968 A CN201010185968 A CN 201010185968A CN 102262328 B CN102262328 B CN 102262328B
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Abstract
The invention discloses an all-optical wavelength/code type conversion device, relates to the field of optical network communication, and realizes all-optical wavelength/code type conversion of various code type signals of polarization division multiplexing (PDM), orthogonal polarization and frequency division multiplexing (OPFDM), single polarization signals and the like. The device comprises a first pump light transmitting device, a second pump light transmitting device, a pump light controller and a polarization maintaining coupler, wherein the first pump light transmitting device transmits first pump light in an x polarization state; the second pump light transmitting device transmits second pump light in a y polarization state; the pump light controller adjusts the first pump light transmitting device and the second pump light transmitting device, so that the frequencies of the first and second pump light, the frequency of signal light to be converted and the frequency of conversion signal light of a target wavelength/code type meet a preset relationship; the first and second pump light are coupled by the polarization maintaining coupler and input into a nonlinear optical waveguide; and in the nonlinear optical waveguide, the signal light to be converted and dual pump light input by the polarization maintaining coupler are subjected to a four-wave mixing effect, and signal light with the target wavelength is generated. The device is mainly applied to an optical network.
Description
Technical field
The present invention relates to technical field of optical network communication, relate in particular to a kind of all-optical wavelength/code type conversion device.
Background technology
In fiber optic communication field, DWDM (Dense Wavelength Division Multiplexing, dense wave division multipurpose) network can provide large capacity, diversified wideband service, along with the continuous increase of user to the data transmission demand of large capacity and two-forty, DWDM network also becomes to take as the leading factor the trend of backbone network framework gradually.And All Optical Wave Converter is one of key device of realizing optical communication in DWDM network, it can realize information from light carrier the copying to another wavelength light carrier wave of a wavelength, can effectively reduce network blocking probability, the dirigibility and the expandability that improve optical-fiber network, realize the forwarding of light signal in open dwdm system.
D (Q) the PSK All Optical Wave Converter of a kind of 320Gbit/s based on Ti:PPLN (titanium diffusion periodically poled lithium niobate) is provided in prior art.This wavelength shifter has utilized the second order nonlinear effect of cascade frequency multiplication in Ti:PPLN optical waveguide and difference frequency to realize the wavelength conversion of D (Q) psk signal, yet the signal that Ti:PPLN optical waveguide only meets accurate phase-matching condition to single polarization state TM pattern is realized wavelength conversion, therefore, be difficult to realize advanced modulation form PDM-DQPSK (the Polarization DivisionMultiplexing-Differential Quadrature Phase Shift Keying under two-forty, palarization multiplexing-light difference quadrature phase shift keying), OPFDM-DQPSK signal (Orthogonal Polarization andFrequency Division Multiplexing-Differential Quadrature Phase ShiftKeying, cross polarization frequency division multiplexing-light difference quadrature phase shift keying) etc. wavelength conversion.
Summary of the invention
Embodiments of the invention provide a kind of all-optical wavelength/code type conversion device, have realized PDM, OPFDM, singly all-optical wave-length/pattern conversion of the multiple pattern flashlight such as the number of believing one side only.
For achieving the above object, embodiments of the invention adopt following technical scheme:
An all-optical wavelength/code type conversion device, for flashlight to be converted being converted to the flashlight of object wavelength/pattern, comprising: the first pump light emitter, the second pump light emitter, pump light controller, polarization-maintaining coupler and non-linear optical waveguide;
Described the first pump light emitter, for launching the first pump light of x polarization state;
Described the second pump light emitter, for launching the second pump light of y polarization state;
Described pump light controller is used for regulating described the first pump light emitter and described the second pump light emitter, makes described the first pumping light frequency, the second pumping light frequency and the carrier frequency of described flashlight to be converted, the wave frequency of carrying of the flashlight of described object wavelength/pattern meets predetermined relation;
Described polarization-maintaining coupler, for being coupled described the first pump light and described the second pump light be input to described non-linear optical waveguide;
In described non-linear optical waveguide, the double pumping action light generation four-wave mixing effect of flashlight to be converted and described polarization-maintaining coupler input, generates the flashlight of described object wavelength/pattern.
In the described embodiment of the present invention of technique scheme, the first pump light of the first pump light emitter transmitting x polarization state is to polarization-maintaining coupler, and the second pump light of the second pump light emitter transmitting y polarization state is to described polarization-maintaining coupler.Described polarization-maintaining coupler receives after the first pump light of described x polarization state and the second pump light of y polarization state, and the double pumping action optically-coupled of described input is entered to optical fiber and is input in described non-linear optical waveguide.
Before above-mentioned the first pump light emitter is launched the first pump light, by pump light controller, can regulate described the first pump light emitter to adjust the first pumping light frequency of its transmitting, by described pump light controller, also can regulate described the second pump light emitter to adjust the second pumping light frequency of its transmitting equally.
Due to what be input to non-linear optical waveguide and flashlight generation four-wave mixing effect to be converted in the all-optical wavelength/code type conversion device in the embodiment of the present invention, be double pumping action light, and two pump light emitters are under the adjusting of described pump light controller, the double pumping action light frequency of output can be adjusted accordingly according to different application demands, make the pumping light frequency of described the first pump light emitter transmitting, the pumping light frequency of described the second pump light emitter transmitting and the carrier frequency of flashlight to be converted, carrying between wave frequency of the flashlight of object wavelength/pattern meets some requirements, such as, two pumping light frequencies can equate or be unequal, or the difference between two pumping light frequencies can also meet predetermined condition.Thereby, when the pump light of different frequency is input to after described non-linear optical waveguide, with flashlight generation four-wave mixing effect to be converted, not only can realize in prior art the singly All Optical Wavelength Conversion of the number of believing one side only, can also realize All Optical Wavelength Conversion/pattern conversion of the flashlight of the form such as the advanced modulation such as PDM, OPFDM.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural drawing of all-optical wavelength/code type conversion device in embodiment 1;
Fig. 2 is the schematic diagram of the wavelength from OPFDM-DQPSK signal to PDM-DQPSK signal and pattern conversion in embodiment 2;
Fig. 3 is the first structural drawing of all-optical wavelength/code type conversion device in embodiment 2;
Fig. 4 is the second structural drawing of all-optical wavelength/code type conversion device in embodiment 2;
Fig. 5 is the third structural drawing of all-optical wavelength/code type conversion device in embodiment 2;
Fig. 6 realizes the schematic diagram of the All Optical Wavelength Conversion of PDM-DQPSK signal in embodiment 2;
Fig. 7 is the 4th kind of structural drawing of all-optical wavelength/code type conversion device in embodiment 2.
Embodiment
Along with the constantly lifting of optical-fiber network transfer rate, PDM-DQPSK that can transmission of large capacity and two kinds of patterns that OPFDM-DQPSK modulation format also becomes 100G network first-selection of future generation gradually.Yet full optical wavelength converting device major part of the prior art is as the wavelength conversion of the signals such as OOK, DPSK, the more difficult All Optical Wavelength Conversion that realizes PDM-DQPSK signal and OPFDM-DQPSK signal for traditional pattern.Thereby the embodiment of the present invention provides a kind of all-optical wavelength/code type conversion device, the double pumping action light wavelength that can input by adjusting realizes the All Optical Wavelength Conversion of above-mentioned PDM-DQPSK signal and OPFDM-DQPSK signal.
The all-optical wavelength/code type conversion device that embodiments of the invention provide is applied in optical-fiber network, the information reproduction carrying on the light carrier of a known wavelength can be carried to the light carrier of another one known wavelength, thereby realize the dynamic routing of optical wavelength.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
Embodiment 1:
The embodiment of the present invention provides a kind of all-optical wavelength/code type conversion device, to realize the flashlight that flashlight to be converted is converted to object wavelength/pattern, as shown in Figure 1, this device comprises: the first pump light emitter 14, the second pump light emitter 15, polarization-maintaining coupler 16, pump light controller 17 and non-linear optical waveguide 18.
Wherein, the first pump light emitter 14 is for launching the first pump light of x polarization state.The second pump light emitter 15 is for launching the second pump light of y polarization state.It should be noted that, x polarization state and the y polarization state in the embodiment of the present invention, mentioned are mutually orthogonal.
Before above-mentioned first pump light emitter 14 transmitting the first pump lights, by pump light controller 17, can regulate described the first pump light emitter 14, the first pumping light frequency of its transmitting is adjusted, by described pump light controller 17, also can regulate described the second pump light emitter 15 equally, the second pumping light frequency of its transmitting is adjusted.
Such as, by described pump light controller, above-mentioned two pump light emitters are regulated, thereby change above-mentioned two pumping light frequencies, make described the first pumping light frequency, described the second pumping light frequency and the carrier frequency of flashlight to be converted, the wave frequency of carrying of the flashlight of object wavelength/pattern meets predetermined relation.Such as, two pumping light frequencies can equate or be unequal, or the difference between two pumping light frequencies can also meet predetermined condition.
Two pump lights after the frequency adjustment obtaining after described pump light controller 17 regulates at above-mentioned two pump light laser instruments are input to after polarization-maintaining coupler 16, polarization-maintaining coupler 16 is coupled described the first pump light and described the second pump light to be input in described non-linear optical waveguide 18, with flashlight generation four-wave mixing effect to be converted, generate the switching signal light of above-mentioned purpose wavelength/pattern.Non-linear optical waveguide in the embodiment of the present invention can be integrated light guide, can be also non-integrated light guide.Preferably, adopt non-linear integrated optical waveguide.
Due to what be input to non-linear optical waveguide and flashlight generation four-wave mixing effect to be converted in the all-optical wavelength/code type conversion device in the embodiment of the present invention, be double pumping action light, and two pump light emitters are under the adjusting of described pump light controller, the double pumping action light frequency of output can be adjusted accordingly according to different application demands, therefore not only can realize in prior art the singly All Optical Wavelength Conversion of the number of believing one side only, can also realize such as PDM, the conversion of the All Optical Wavelength Conversion of the flashlight of the advanced modulation forms such as OPFDM/pattern, contribute to the dynamic routing of optical networks wavelength to select, make the mixed transport that same optical-fiber network can compatible multiple pattern simultaneously.
Embodiment 2:
The all-optical wavelength/code type conversion device that the embodiment of the present invention provides can be applied to OPFDM flashlight in the All Optical Wavelength Conversion and pattern transfer process of PDM flashlight.OPFDM flashlight includes two subcarriers that polarization state is mutually orthogonal, frequency is different, and two subcarriers raise the information that is shaped with carrying.PDM flashlight includes two subcarriers that polarization state is mutually orthogonal, frequency is identical, and two subcarriers raise the information that is shaped with carrying.
The concrete scene of the invention process example assumes application is to be f by sub-carrier frequencies
sa, f
sboPFDM-DQPSK flashlight to sub-carrier frequencies, be f
cthe All Optical Wavelength Conversion of PDM-DQPSK flashlight and pattern conversion, wherein, above-mentioned OPFDM-DQPSK signal light frequency is f
sasubcarrier be x polarization state, the frequency f of above-mentioned OPFDM-DQPSK flashlight
sbsubcarrier be y polarization state.
Describe in detail the process that adopts the all-optical wavelength/code type conversion device shown in Fig. 1 to realize the All Optical Wavelength Conversion from OPFDM-DQPSK flashlight to PDM-DQPSK flashlight in above-mentioned scene below.
The first pump light emitter 14 is for launching the first pump light of x polarization state; The second pump light emitter 15 is for launching the second pump light of y polarization state.
Described pump light controller 17, for regulating described the first pump light emitter and described the second pump light emitter, makes the frequency f of described the first pump light
pafrequency f with the second pump light
pbmeet following requirement:
f
pa＝0.5(f
c+f
sa)，f
pb＝0.5(f
c+f
sb)；
Wherein, f
safor the frequency of the subcarrier of the x polarization state of described OPFDM-DQPSK flashlight to be converted, f
sbfor the frequency of the subcarrier of the y polarization state of described OPFDM-DQPSK flashlight to be converted, Δ f is the frequency-splitting between the subcarrier of x polarization state of described OPFDM-DQPSK flashlight and the subcarrier of the y polarization state of described OPFDM-DQPSK flashlight, f
cthe wave frequency of carrying for the PDM-DQPSK flashlight of described object wavelength.
The pump light of the x polarization state of the first pump light emitter 14 transmittings after above-mentioned regulating frequency is to polarization-maintaining coupler.The pump light of the y polarization state of the second pump light emitter 15 transmittings after above-mentioned regulating frequency is to described polarization-maintaining coupler.Described polarization-maintaining coupler 16 receives the pump light of described x polarization state and the pump light coupled into optical fibres of y polarization state and is input in non-linear optical waveguide 18.
In non-linear optical waveguide, two subcarriers of OPFDM-DQPSK flashlight and by the double pumping action light generation four-wave mixing effect after described pump light controller adjusting wavelength, the principle of T.G Grammar light as shown in Figure 2, because the difference of the frequency of two subcarriers of described OPFDM-DQPSK flashlight is f
sa-f
sb=Δ f, according to four-wave mixing effect expression formula f
c=2
fp-f
s, wherein, f
cfor the signal light frequency obtaining after conversion, f
pfor pumping light frequency, f
sfor signal light frequency to be converted, when the difference of two pump light emitters double pumping action light frequency of output after above-mentioned pumping optical controller regulates is
time, can obtain two sub-carrier frequencies and be f
c(f
ccorresponding object wavelength) and the mutually orthogonal switching signal light of polarization state, thereby realized the conversion of all-optical wave-length, meanwhile, the switching signal light of generation is also just specially PDM-DQPSK signal.
Above-mentioned non-linear optical waveguide adopts the larger material of nonlinear factor to be made, such as arsenic sulfide wave guide, and the polymer waveguide of high nonlinear coefficient or highly nonlinear optical fiber etc.
Further, above-mentioned all-optical wavelength/code type conversion device can also comprise the device for generation of flashlight, and as shown in Figure 3, this all-optical wavelength/code type conversion device also comprises: first signal light emitting devices 11, secondary signal light emitting devices 12, polarization beam combiner 13.
Above-mentioned first signal light emitting devices 11 is for being f to the frequency of x polarization state
sasubcarrier carry out DQPSK modulation and obtain the DQPSK flashlight of x polarization state and inputed to polarization beam combiner.Secondary signal light emitting devices 12 is for being f to the frequency of y polarization state
sbsubcarrier carry out DQPSK modulation and obtain the DQPSK flashlight of y polarization state and inputed to described polarization beam combiner.Together with described polarization beam combiner 13 is multiplexing with the DQPSK of described y polarization state flashlight by the DQPSK flashlight of described x polarization state, obtains described OPFDM-DQPSK flashlight and be entered in above-mentioned non-linear optical waveguide 18.
Further, in order to improve the efficiency of polarization converted, optionally, as shown in Figure 4, in above-mentioned all-optical wavelength/code type conversion device, increase Polarization Controller 19, at described polarization-maintaining coupler, the double pumping action optically-coupled of described input is entered after optical fiber, before being input to non-linear optical waveguide, first by 19 pairs of double pump polarisation of light states of Polarization Controller, control, the polarization state of the flashlight that the pump light of the first pump light emitter 14 transmitting is corresponding with x polarization state subcarrier in described OPFDM-DQPSK flashlight is consistent, the polarization state of the flashlight that the pump light of the second pump light emitter 15 transmitting is corresponding with y polarization state subcarrier in described OPFDM-DQPSK flashlight is consistent.Because OPFDM is relevant with polarization to the conversion between PDM signal, thereby increase after this Polarization Controller, when can change, improve wavelength conversion efficiency between OPFDM and PDM signal.
As shown in Figure 5, the all-optical wavelength/code type conversion device that the embodiment of the present invention provides can further include an optical filter 110, for the flashlight of non-linear optical waveguide output is carried out to filtering, obtain the flashlight of object wavelength/pattern and be entered in optical fiber transmitting.This optical filter also can be in all-optical wavelength/code type conversion device, it can be positioned at the receiving end that the flashlight of non-linear optical waveguide output will arrive, at receiving end, separate before be in harmonious proportion surveying and complete the flashlight that the filtering of flashlight is obtained to above-mentioned purpose wavelength/pattern, and then be entered into corresponding receiver and separate and be in harmonious proportion detection.
In concrete application process, the all-optical wavelength/code type conversion device in the embodiment of the present invention, except realizing above-mentioned OPFDM flashlight to All Optical Wavelength Conversion and the pattern conversion of PDM flashlight, can also be realized the All Optical Wavelength Conversion of OPFDM/PDM flashlight.Lower mask body be take sub-carrier frequencies as f
spDM-DQPSK flashlight to sub-carrier frequencies, be f
cthe All Optical Wavelength Conversion of PDM-DQPSK flashlight be that example is introduced, as shown in Figure 6, concrete transfer process is as follows for the principle of work of conversion:
Described pump light controller regulates described the first pump light emitter and described the second pump light emitter, makes the frequency f of described the first pump light
pafrequency f with described the second pump light
pbmeet following requirement:
f
pa＝f
pb＝0.5(f
c+f
s)；
Wherein, f
cfor the flashlight of described object wavelength/pattern, carry wave frequency, f
sthe wave frequency of carrying for described flashlight to be converted.
Then, the pump light of described the first pump light emitter transmitting after above-mentioned regulating frequency is to described polarization-maintaining coupler, and the pump light that described the second pump light emitter is also launched after above-mentioned regulating frequency arrives described polarization-maintaining coupler.
The double pumping action light described polarization-maintaining coupler coupled into optical fibres of process that described frequency is equal also inputs in non-linear optical waveguide, with two subcarrier generation four-wave mixing effects of PDM-DQPSK flashlight, according to four-wave mixing effect expression formula f
c=2f
p-f
s, can obtain two sub-carrier frequencies and be f
c(f
ccorresponding object wavelength) and the mutually orthogonal switching signal light of polarization state.The switching signal light obtaining is still PDM-DQPSK signal, and only will originally be carried on frequency is f
sinformation transfer on subcarrier is f to frequency
con subcarrier, carry, also just realize All Optical Wavelength Conversion.
Further, in order to improve the efficiency of the All Optical Wavelength Conversion of PDM-DQPSK flashlight, at described polarization-maintaining coupler, the double pumping action optically-coupled of described input is entered after optical fiber, before being input to non-linear optical waveguide, first by 19 pairs of double pumping action polarisation of light states of Polarization Controller, control, the polarization state of the flashlight that the pump light of the first pump light emitter 14 transmitting is corresponding with x polarization state subcarrier in described PDM-DQPSK flashlight is consistent, the polarization state of the flashlight that the pump light of the second pump light emitter 15 transmitting is corresponding with y polarization state subcarrier in described PDM-DQPSK flashlight is consistent.Because the conversion of the all-optical wave-length of PDM signal is relevant to polarization, thereby increase after this Polarization Controller, can improve wavelength conversion efficiency.
The All Optical Wavelength Conversion process of OPFDM-DQPSK flashlight and the All Optical Wavelength Conversion process of above-mentioned PDM-DQPSK flashlight are similar, and it is f that lower mask body is introduced two sub-carrier frequencies
sa, f
sboPFDM-DQPSK flashlight to be transformed into two sub-carrier frequencies be f
ca, f
cbthe process of OPFDM-DQPSK flashlight.
Described pump light controller is used for regulating described the first pump light emitter and described the second pump light emitter, makes the frequency f of described the first pump light
pafrequency f with the second pump light
pbmeet following requirement:
f
pa＝0.5(f
ca+f
sa)，f
pb＝0.5(f
cb+f
sb)；
Wherein, f
safor the frequency of the subcarrier of the x polarization state of described OPFDM-DQPSK flashlight to be converted, f
sbfor the frequency of the subcarrier of the y polarization state of described OPFDM-DQPSK flashlight to be converted, f
cafor the frequency of the subcarrier of the x polarization state of the OPFDM-DQPSK flashlight of described object wavelength, f
cbfor the frequency of the subcarrier of the y polarization state of the OPFDM-DQPSK flashlight of described object wavelength, and f
cabe not equal to f
cb.
The double pumping action light described polarization-maintaining coupler coupled into optical fibres of process of two pump light emitter outputs after pump light controller regulates also inputs in non-linear optical waveguide, with two subcarrier generation four-wave mixing effects of OPFDM-DQPSK flashlight, T.G Grammar flashlight.This switching signal light is still OPFDM-DQPSK signal, but than conversion before OPFDM-DQPSK flashlight, having there is conversion in its subcarrier, has become frequency and be respectively f
ca, f
cbsubcarrier.
Further, in order to improve the efficiency of the All Optical Wavelength Conversion of OPFDM-DQPSK flashlight, at described polarization-maintaining coupler, the double pumping action optically-coupled of described input is entered after optical fiber, before being input to non-linear optical waveguide, first by 19 pairs of double pumping action polarisation of light states of Polarization Controller, control, the polarization state of the flashlight that the pump light of the first pump light emitter 14 transmitting is corresponding with x polarization state subcarrier in described OPFDM-DQPSK flashlight is consistent, the polarization state of the flashlight that the pump light of the second pump light emitter 15 transmitting is corresponding with y polarization state subcarrier in described OPFDM-DQPSK flashlight is consistent.Because the conversion of the all-optical wave-length of OPFDM signal is relevant to polarization, thereby increase after this Polarization Controller, can improve wavelength conversion efficiency.
In addition, adopt all-optical wavelength/code type conversion device in the embodiment of the present invention can also realize the singly number of believing one side only as, the All Optical Wavelength Conversion of OOK signal, phase shift keyed signal, quadrature amplitude modulation signal.As shown in Figure 7, now this all-optical wavelength/code type conversion device also comprises further: polarization state handover module 111, for the pump light of described the first pump light emitter transmitting is switched to y polarization state from x polarization state, or for the pump light of described the second pump light emitter transmitting is switched to x polarization state from y polarization state.In actual application, this polarization state handover module can adopt half-wave plate.
Introduce the wavelength-conversion process of single polarization state OOK signal/dpsk signal below.
The all-optical wavelength/code type conversion device that utilizes the embodiment of the present invention to provide, can realize the irrelevant All Optical Wavelength Conversion of described single polarization state OOK signal/dpsk signal polarisation of light, now, described pump light controller switches to the polarization state with described flashlight to be converted with identical polarization direction by controlling described polarization state handover module 111 by the pump light of described the first pump light emitter transmitting from x polarization state, the pump light of described the second pump light emitter transmitting is switched to the polarization state with described flashlight to be converted with identical polarization direction from y polarization state.As: when flashlight to be converted is x polarization state, the polarization state of the second pump light can be switched to x polarization state from y polarization state; When signal to be transferred light is y polarization state, the polarization state of the first pump light can be switched to y polarization state from x polarization state, that is to say the hand-off process of carrying out corresponding polarization state by polarization state handover module, make the polarization state of two pump lights all identical with the polarization state of flashlight to be converted.
Certainly, when pump light controller carries out corresponding polarization state switching except controlling polarization state handover module, can also regulate two pump light emitters, to adjust the pumping light frequency of output.If requiring carrier frequency is f
sthe carrier frequency that obtain flashlight of single polarization state flashlight after changing be f
c, pump light controller regulates two pump light emitters, can be so that two pumping light frequencies of output are 0.5 (f
c+ f
s).Certainly, pump light controller also can only regulate one of them pump light emitter, and the pumping light frequency that makes its output is 0.5 (f
c+ f
s).
In carrying out the transfer process of single polarization state flashlight, polarization state change-over switch also can not carried out the blocked operation of polarization state.As: when flashlight to be converted is x polarization state, can the second pump light be switched to y polarization state from x polarization state, still can there is with the first pump light of x polarization state the switching signal light that four-wave mixing effect generates object wavelength in flashlight to be converted in non-linear optical waveguide.
Then, in described non-linear optical waveguide, there is pump light and described OOK to be converted signal/dpsk signal light generation four-wave mixing effect of the polarization state of identical polarization direction with OOK signal/dpsk signal light to be converted, T.G Grammar light, thus realized the All Optical Wavelength Conversion of traditional pattern OOK signal/dpsk signal light.
When utilizing all-optical wavelength/code type conversion device that the embodiment of the present invention provides to realize the signal light wavelength conversion of above-mentioned single polarization state, further, flashlight because OOK signal/dpsk signal is single polarization state, is used a flashlight emitter in the input signal light time.In specific implementation process, can OOK signal/dpsk signal light be inputed to polarization beam combiner by described first signal light emitting devices, or, also can described OOK signal/dpsk signal light be inputed to described polarization beam combiner by described secondary signal light emitting devices.Or, directly the flashlight of first signal light emitting devices or the generation of secondary signal light emitting devices is directly inputted in described non-linear optical waveguide.
From the course of work of all-optical wavelength/code type conversion device described above, can find out, due to what be input to non-linear optical waveguide and flashlight generation four-wave mixing effect to be converted in the all-optical wavelength/code type conversion device in the embodiment of the present invention, be double pumping action light, and two pump light emitters are under the adjusting of described pump light controller, the double pumping action light frequency of output can be adjusted accordingly according to different application demands, therefore not only can realize in prior art the singly All Optical Wavelength Conversion of the number of believing one side only, can also realize such as PDM-DQPSK, the conversion of the All Optical Wavelength Conversion of the flashlight of the advanced modulation forms such as OPFDM-DQPSK/pattern.
The embodiment of the present invention is mainly used in optical communication network, can realize PDM, OPFDM, the singly all-optical wave-length of the multiple pattern flashlight such as the number of believing one side only/pattern conversion.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (9)
1. an all-optical wavelength/code type conversion device, for flashlight to be converted being converted to the flashlight of object wavelength/pattern, it is characterized in that, comprising: the first pump light emitter, the second pump light emitter, polarization state handover module, pump light controller, polarization-maintaining coupler and non-linear optical waveguide;
Described the first pump light emitter, for launching the first pump light of x polarization state;
Described the second pump light emitter, for launching the second pump light of y polarization state;
Described polarization state handover module, for described first pump light of described the first pump light emitter transmitting is switched to y polarization state from x polarization state, or for described second pump light of described the second pump light emitter transmitting is switched to x polarization state from y polarization state;
Described pump light controller is used for regulating described the first pump light emitter and described the second pump light emitter, makes described the first pumping light frequency, the second pumping light frequency and the carrier frequency of described flashlight to be converted, the wave frequency of carrying of the flashlight of described object wavelength/pattern meets predetermined relation;
Described polarization-maintaining coupler, for being coupled described the first pump light and described the second pump light be input to described non-linear optical waveguide;
In described non-linear optical waveguide, the double pumping action light generation four-wave mixing effect of described flashlight to be converted and described polarization-maintaining coupler input, generates the flashlight of described object wavelength/pattern.
2. all-optical wavelength/code type conversion device according to claim 1, is characterized in that, described non-linear optical waveguide adopts nonlinear material to be made.
3. all-optical wavelength/code type conversion device according to claim 1, it is characterized in that, this device further comprises: Polarization Controller, before being input to described non-linear optical waveguide for the double pumping action light in described polarization-maintaining coupler output, described double pumping action polarisation of light state is controlled.
4. all-optical wavelength/code type conversion device according to claim 1, is characterized in that, this device also comprises: optical filter, for the flashlight of described non-linear optical waveguide output is carried out to filtering, obtains the flashlight of described object wavelength/pattern.
5. according to the all-optical wavelength/code type conversion device described in arbitrary claim in claim 1 to 4, it is characterized in that, when described flashlight to be converted is cross polarization frequency division multiplexing OPFDM flashlight, and the flashlight of described object wavelength/pattern is while being specially palarization multiplexing PDM flashlight;
Described pump light controller is used for regulating described the first pump light emitter and described the second pump light emitter, makes the frequency f of described the first pump light
pafrequency f with the second pump light
pbmeet following requirement:
f
pa=0.5（f
c+f
sa），f
pb=0.5（f
c+f
sb），
Wherein, f
safor the frequency of the subcarrier of the x polarization state of described flashlight to be converted, f
sbfor the frequency of the subcarrier of the y polarization state of described flashlight to be converted, the frequency-splitting between the subcarrier of the x polarization state that Δ f is described flashlight to be converted and the subcarrier of the y polarization state of described flashlight to be converted, f
cthe wave frequency of carrying for the flashlight of described object wavelength/pattern.
6. according to the all-optical wavelength/code type conversion device described in arbitrary claim in claim 1 to 4, it is characterized in that, when described flashlight to be converted is specially cross polarization frequency division multiplexing OPFDM flashlight, and the flashlight of described object wavelength/pattern is while being also specially OPFDM flashlight;
Described pump light controller is used for regulating described the first pump light emitter and described the second pump light emitter, makes the frequency f of described the first pump light
pafrequency f with the second pump light
pbmeet following requirement:
f
pa=0.5（f
ca+f
sa），f
pb=0.5（f
cb+f
sb）；
Wherein, f
safor the frequency of the subcarrier of the x polarization state of described flashlight to be converted, f
sbfor the frequency of the subcarrier of the y polarization state of described flashlight to be converted, f
cafor the frequency of the subcarrier of the x polarization state of the flashlight of described object wavelength/pattern, f
cbfor the frequency of the subcarrier of the y polarization state of the flashlight of described object wavelength/pattern, and f
cabe not equal to f
cb.
7. according to the all-optical wavelength/code type conversion device described in arbitrary claim in claim 1 to 4, it is characterized in that, when described flashlight to be converted is specially palarization multiplexing PDM flashlight, when the flashlight of described object wavelength/pattern is specially PDM flashlight;
Described pump light controller is used for regulating described the first pump light emitter and described the second pump light emitter, makes the frequency f of described the first pump light
pafrequency f with described the second pump light
pbmeet following requirement:
f
pa=f
pb=0.5（f
c+f
s）；
Wherein, f
cfor the flashlight of described object wavelength/pattern, carry wave frequency, f
sthe wave frequency of carrying for described flashlight to be converted.
8. according to the all-optical wavelength/code type conversion device described in claim 1, it is characterized in that,
When described flashlight to be converted is that single polarization state is while being the flashlight of y polarization state, described pump light controller switches to the polarization state with described flashlight to be converted with identical polarization direction for controlling described polarization state handover module by described first pump light of described the first pump light emitter transmitting from x polarization state, or when described flashlight to be converted is that single polarization state is while being the flashlight of x polarization state, described second pump light of described the second pump light emitter transmitting is switched to the polarization state with described flashlight to be converted with identical polarization direction from y polarization state.
9. all-optical wavelength/code type conversion device according to claim 8, it is characterized in that, the flashlight that the flashlight that described single polarization state is x polarization state or described single polarization state are y polarization state comprises: on-off keying signal, phase shift keyed signal, quadrature amplitude modulation signal.
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| CN103955101A (en) * | 2014-03-20 | 2014-07-30 | 北京邮电大学 | Method of generating 16QAM (Quadrature Amplitude Modification) signal in twice four-wave mixing processes based on SOA (Semiconductor Optical Amplifier) |
| CN103825657A (en) * | 2014-03-20 | 2014-05-28 | 北京邮电大学 | Multi-channel signal multicasting method based on four-wave mixing theory |
| CN105393168B (en) * | 2014-04-24 | 2018-07-31 | 华为技术有限公司 | A kind of code conversion method and code pattern converter based on nonlinear effect |
| CN104052550A (en) * | 2014-06-19 | 2014-09-17 | 北京邮电大学 | Method for achieving 1-2 multicast of three paths of DPSK signals simultaneously |
| CN104252084A (en) * | 2014-09-18 | 2014-12-31 | 浙江大学 | Integrated planar waveguide type polarization insensitive all-optical wavelength conversion method and device |
| CN109581699B (en) * | 2019-01-14 | 2020-10-02 | 湖南师范大学 | OOFDM signal-based low-cost low-polarization-sensitivity wide-tunable wavelength conversion device and method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Non-Patent Citations (2)
| Title |
|---|
| Kyo Inoue.Polarization Independent Wavelength Conversion Using Fiber Four-Wave Mixing with Two Orthogonal Pump Lights of Different Frequencies.《JOURNAL OF LIGHTWAVE TECHNOLOGY》.1994,第12卷(第11期),第1916页左栏第2段到第1920页左栏第3段、图1-4. |
| Polarization Independent Wavelength Conversion Using Fiber Four-Wave Mixing with Two Orthogonal Pump Lights of Different Frequencies;Kyo Inoue;《JOURNAL OF LIGHTWAVE TECHNOLOGY》;19941130;第12卷(第11期);第1916页左栏第2段到第1920页左栏第3段、图1-4 * |
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