CN101546086A - Fabry-Perot cavity structure all-optical cache based on high-nonlinearity optical fiber - Google Patents
Fabry-Perot cavity structure all-optical cache based on high-nonlinearity optical fiber Download PDFInfo
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Abstract
The invention provides a Fabry-Perot cavity structure all-optical cache based on high-nonlinearity optical fiber, which can realize the function of reading, writing and erasing photonic data at random. The cache is characterized in that high-nonlinearity optical fiber is arranged inside a Fabry-Perot cavity; data is read in through the four-wave mixing action of control light and light signals (photonic data), and is subjected to reciprocating transmission in the cavity so as to be cached; in a caching process, the control light continuously provides gain for the photonic data to compensate the data for the loss in the cavity so as to guarantee caching time; the cached data can produce a four-wave mixing process again by utilizing the control light in another wavelength so as to read the data out; and when the control light disappears, the cache is emptied. The cache has the advantages that the cache is simple in structure, takes DC light as the control light, is convenient to control and fast to read/write, has no limit on the code rate of the photonic data and modulation formats, and can be extended to realize caching operation variable in data length.
Description
Technical field:
The present invention relates to a primary element in optical information processing and the all-optical network, particularly a kind of Fabry-Perot cavity configuration full optical buffer based on highly nonlinear optical fiber.Full optical buffer can the buffer memory light signal, and the signal of buffer writes and reads control and also finished by optical control signal, can realize data read at random as required.Can be used for fields such as optical fiber telecommunications system, full light signal processing.It mainly is the buffer memory that is used for the two-forty light signal.
Background technology:
Along with the development of information society, people grow with each passing day to the demand and the dependence of information.In visible future, be the appearance of future generation professional of representative and popularize and to make network combine, develop to voice, data and image to the multi-medium video-signal direction from traditional voice, data separating business with 3D online game, IPTV, videophone, tele-medicine, long-distance education, video conference, mobile TV etc.This makes the data volume sharp increase on the optical communication network.This in order to tackle " blast " formula increases, and promoting existing network bandwidth and exchange capacity has become an instant problem.Aspect the network bandwidth, the research of 40G optical transmission system and using just in like a raging fire carrying out, and utilize wavelength-division multiplex (WDM) technology to realize that on single-mode fiber the transmission bandwidth of T bit-level also has report, bandwidth no longer is the bottleneck of network.Aspect exchange, what still adopt at present is traditional circuit exchange mode, network switching node still carries out the conversion of light-electrical-optical to data, though electric router has very big development, but the limit decision of electron device response time and the bandwidth of node device own its limited development space, with future superfast Networks of Fiber Communications target incompatible.
Light packet switch OPS (Optical Packet Switching) technology is to solve bandwidth and a kind of effective scheme that exchanges contradiction, is a kind of preferential selection of network long term growth.OPS comes bearer service with the light unit of being grouped into, and can directly in the light territory data be transmitted and exchange, and has avoided the restriction of electric exchange.From in essence, OPS is a storage-repeating process based on full optical buffer.Full optical buffer can provide the processing time of node to header packet information, finishes the scheduling and the data forwarding of all-optical network, can also provide solution during to the passage contention at different user.Another more significant meaning be: constituted the basis of modern digital circuits as switch and storage, if optical storage technology is broken through, theoretically, the process of the function of digital circuit being transferred to the light territory has just strided forward major step, will bring dawn for " photon epoch ".But, because photon is a boson, there is not rest mass, so storing at random, realization light has suitable difficulty, to such an extent as to the light internal memory still is in the more original stage now, also there is not the appearance of light RAM, therefore imperative to the all-optical buffer Study on Technology.
Desirable full optical buffer is the conversion of a no light requirement-electrical-optical, the device that can be write and be read by light signal control optical data stream at random.In the world the research of full optical buffer is attached great importance to, also proposed a lot of schemes and experiment report.Utilizing the time-delay transmission of light signal in optical fiber is to be used for a kind of scheme that the light signal buffer memory also is the most approaching practicality the earliest.Common several implementations are:
1, delay line+photoswitch---utilize the time-delay characteristics of optical fiber to cooperate photoswitch to constitute.On the concrete form, can cooperate switch formation various combination to finish variable time-delay with different delay lines and also can adopt a plurality of fiber gratings (FBG) or chirped fiber grating (CFBG) to cooperate the fast tunable wavelength shifter to change amount of delay.This scheme is difficult to realize signal read/write at random, is not the full optical buffer of real meaning;
2, optical fiber structure Fabry-Perot-type cavity+photoswitch (being F-P chamber+photoswitch)---by adding the reflectivity adjustable mirror at the optical fiber two ends, making light signal survive in the chamber (buffer memory) and finish by the transmissivity that changes catoptron writes and reads, typical case's representative of this scheme proposes (Anjali Agarwal by Agarwal A., Lijun Wang, Yikai su and Prem Kumar. " All-opticalloadable and erasable storage buffer based on parametricnonlinearity in fiber " OFC 2001, ThH5-1,2001).Two optical fiber total reflective mirrors that are made of three-dB coupler constitute the F-P chamber, as inserting one section dispersion shifted optical fiber (DSF) in the fiber optic loop of Effect of Back-Cavity Mirror.Light signal is injected in the chamber back signal will between two optical fiber total reflective mirrors, transmit and obtain the buffer memory of delaying time, during the parameter amplification process of phase sensitive provide gain for signal.When needs were read, fiber optic loop and light signal generation cross-phase modulation (XPM) that the control light pulse is injected as Effect of Back-Cavity Mirror acted on, and change the transmissison characteristic of optical fiber total reflective mirror, and buffered signal is read.The more complicated of the structure of this scheme, the F-P cavity configuration is made of two optical fiber total reflective mirrors, and the length of storage signal is mainly determined by the length decision rather than chamber, the F-P chamber length of fiber optic loop.Read control light and must be with the optical clock pulse of Signal Matching and when the control need with the signal strict synchronism, the parameter amplification process of phase sensitive should be noted that the phase relation between pumping light and the signal in addition, inconvenience is implemented.
Another kind of scheme is found in number of patent application " 200510011883.7 ", and name is called " a kind of method of improving optical-fiber type complete optical buffer register characteristic ".F-P chamber+photoswitch all-optical buffer scheme that this patented claim is mentioned and above-mentioned similar, still two optical fiber total reflective mirrors that are made of three-dB coupler constitute the F-P chamber, the key distinction is to insert in the optical fiber total reflective mirror semiconductor optical amplifier (SOA) and is used to realize reading and writing control as the nonlinear phase shift device, and control principle is the transmissison characteristic complete operation that utilizes the XPM effect in SOA of control light and flashlight to change the phase place of one road flashlight and then change the optical fiber total reflective mirror.It is optical clock pulse with Signal Matching that the gating pulse of this scheme also needs, and SOA can produce cross-gain modulation (XGM) when producing XPM, makes the signal degradation of output.In addition, the speed of charge carrier release time of the SOA that uses will limit read-write operation speed, to data cached data transfer rate certain limitation.
3, fiber optic loop structure---will treat buffered signal introducing fiber optic loop by the switch switching, and data be detoured in ring finish buffer memory and can in ring, provide gain with the prolongation light signal time-to-live.When needs are read, by the switching of opening the light data to be drawn, wherein double-ring coupled full optical buffer is a kind of modular design (number of patent application " 02153429.2 ", a title " double-ring coupled full optical buffer ").This scheme has reasonable effect, but because two loops form is a kind of interferometer structure, the symmetry of two loops is had relatively high expectations, and variations such as environment temperature, vibration also can system performance impact.Be vulnerable to the influence of polarization variations or nonlinear phase shift, job stability maintain certain difficulty, the control signal of switch also often need pulse signal or with the buffered signal clock signal synchronous, the buffer memory of phase modulated signal is difficult for realizing.It seems that totally in these buffering schemes based on optical fiber structure, simple delay line+switch solution is not an all-optical buffer truly owing to do not possess read-write capability; Because the decay of signal, cache-time is limited easily not with the time-delay structure of gain; Time-delay combination or read/write scheme by electrooptical switching control finally can be limited by " electronic bottleneck ", can not reach the requirement of all-optical network.In recent years, utilize semiconductor microactuator ring structure and realize that by " slower rays " effect that reduces light signal group velocity in optical fiber the time-delay buffer memory of light signal has also attracted numerous researchers' attention.But two kinds of methods are owing on technology and the principle, still have long road to walk from real practicality.
Conclude existing scheme as can be seen, band gain feedback cavity structure by optically controlled optical switch control can guarantee enough cache-times, function such as realize reading and writing fast, wipe, be comparison near practical scheme, but also need improve in the stability of the dirigibility of on-off mode, convenience, work and aspect data modulation system, code check transparent.
Summary of the invention:
The present invention proposes a kind of and the diverse optical buffer of such scheme, a kind of Fabry-Perot cavity configuration full optical buffer based on highly nonlinear optical fiber, it is applicable to the light signal storage of Gb/s (p level second) to hundreds of Gb/s speed (inferior p level second), adopt direct current light to control light, without limits to the modulation format of signal as reading and writing.
Buffer of the present invention, by light load module 1, caching control unit 2, optical band pass filter 6 constitutes, it is characterized in that: control light and flashlight are combined into one the tunnel and inject caching control unit 2 by light load module 1, caching control unit 2 constitutes a Fabry-Perot cavity structure by front cavity mirror 3 and Effect of Back-Cavity Mirror 4, it is the F-P cavity configuration, highly nonlinear optical fiber 5 is placed in the chamber, utilize the control light and the four-wave mixing effect of flashlight in highly nonlinear optical fiber of different wave length, realize writing and reading of light signal, control light can provide gain for flashlight when buffer memory, optical band pass filter 6 is used to select to export the light signal that is read out.
In order to reach purpose of the present invention, concrete implementation step is as follows:
1) constitute light load module 1 with interleaver or photo-coupler, it will control light, flashlight is combined into one the tunnel and injects caching control unit 2.
2) utilize a pair of identical reflection frequency ω that has
1Fiber Bragg Grating FBG constitute a Fabry-Perot cavity configuration as front cavity mirror 3 and Effect of Back-Cavity Mirror 4, and highly nonlinear optical fiber 5 is placed in the chamber; Or by optical fiber total reflective mirror replace Fiber Bragg Grating FBG as front cavity mirror 3 and and reflection frequency be ω
1Fiber Bragg Grating FBG Effect of Back-Cavity Mirror 4 constitute Fabry one an amber cavity configuration, and highly nonlinear optical fiber 5 is placed in the chamber.Because Fiber Bragg Grating FBG is a frequency range ω to determining only
1Reflection and, therefore write control light and flashlight and can directly be injected into (or in the chamber, injecting) in the chamber to the optical transparency of other frequencies.
3) highly nonlinear optical fiber 5 places F-P cavity configuration inside, in order to realize the nonlinear interaction between control light and the flashlight, promptly realizes the four-wave mixing process, finish write, read operation.After control light and flashlight enter highly nonlinear optical fiber in the chamber,, realize wavelength conversion to flashlight owing to produce the four-wave mixing process.By selecting the control light wavelength, can make the light signal after changing aim at the reflection frequency of Fiber Bragg Grating FBG, flashlight will back and forth transmit in the chamber, realize buffer memory.
4) control light can be continuously buffered signal gain is provided before reading the control arrival, with the loss of compensated optical signal in the chamber, to guarantee enough cache-times.
5) when needs are read, the control light of reading of another wavelength enters caching control unit 2, read control light and produce new four-wave mixing process with the light signal that is buffered in highly nonlinear optical fiber, buffered signal is copied on the new wavelength, finishes signal reading in the chamber.
6) select suitable filters to leach the light signal of reading in the chamber, realize the final output of buffer.
7) after control light all disappears, because the loss effect in the chamber can make the signal attenuation that is buffered disappear, buffer is cleared.
Advantage of the present invention and good effect: (1), full optical buffer proposed by the invention are simple in structure, and memory capacity is big, can realize reading at random, and is practical; (2), aspect control, adopted the parametric process in the optical fiber, therefore have high response speed (f second-time), but the signal of buffer memory hundreds of Gb/s speed, to the modulation format of buffered signal without limits; (3), reading and writing of the present invention control light is direct current light, avoided other types reading and writing photoswitch to need clock light pulse and synchronous requirement; (4), during buffer memory, parametric process can provide gain for light signal, to obtain enough cache-times.Can replace with other high non-linearity media for highly nonlinear optical fiber, as high non-linear photon crystal optical fiber with similar characteristic.
Description of drawings:
Fig. 1 is the Fabry-Perot cavity configuration full optical buffer synoptic diagram that the present invention is based on highly nonlinear optical fiber.
Among the figure, 1 smooth load module, 2 caching control units, 6 optical band pass filters;
Wherein 2 caching control units are made of 3 front cavity mirrors, 4 Effect of Back-Cavity Mirror and 5 highly nonlinear optical fibers.
Fig. 2 Fiber Bragg Grating FBG is to the F-P cavity configuration full optical buffer synoptic diagram of structural type highly nonlinear optical fiber.
Among the figure, 1 smooth load module: constitute by 3 * 1 wavelength division multiplexer WDM or three-dB coupler, make the light load module, can be coupled as a tunnel with writing, read with flashlight;
2 caching control units;
3 front cavity mirrors: with optical fiber Bouguer grating is front cavity mirror;
4 Effect of Back-Cavity Mirror: with the centre frequency Fiber Bragg Grating FBG identical with front cavity mirror is Effect of Back-Cavity Mirror;
5 highly nonlinear optical fibers;
6 optical band pass filters;
Wherein: 3,4 chamber mirrors be Fiber Bragg Grating FBG to structure, 3,4 chamber mirrors are formed the F-P cavity configurations, caching control unit 2 by Fiber Bragg Grating FBG to 3,4 and highly nonlinear optical fiber 5 constitute.
The F-P cavity configuration full optical buffer synoptic diagram of Fig. 3 optical fiber total reflective mirror+Fiber Bragg Grating FBG structural type highly nonlinear optical fiber.
Among the figure, 1 smooth load module: constitute by wavelength division multiplexer and photo- coupler 9,2 caching control units, 3 front cavity mirrors: it is an optical fiber completely reflecting mirror, be that two output terminals by 3dB photo-coupler 7 are connected to form a loop 8 and an optical fiber completely reflecting mirror forming, 4 Effect of Back-Cavity Mirror: be made of 5 highly nonlinear optical fibers Fiber Bragg Grating FBG, 6 optical band pass filters, 9 photo-couplers;
Wherein, wavelength division multiplexer will control light and flashlight is combined into one tunnel formation light load module 1, and photo-coupler 9 is introduced the output of light load module 1 in the F-P chamber.Make front cavity mirror 3 and make Effect of Back-Cavity Mirror 4 composition F-P cavity configurations with the optical fiber total reflective mirror with Fiber Bragg Grating FBG.
The front cavity mirror 3 that caching control unit 2 is made of the optical fiber completely reflecting mirror, the Effect of Back-Cavity Mirror 4 that Fiber Bragg Grating FBG constitutes and highly nonlinear optical fiber 5 constitute.
Fig. 4 parameter is according to the highly nonlinear optical fiber F-P cavity configuration full optical buffer synoptic diagram of length type structure.
Among the figure, 1 smooth load module: constitute by N * 1 wavelength division multiplexer and coupling mechanism 9,2 caching control units, 3 front cavity mirrors: it is an optical fiber completely reflecting mirror, be that two output terminals by 3dB photo-coupler 7 are connected to form a loop 8 and an optical fiber total reflective mirror forming, 4 Effect of Back-Cavity Mirror: be in series 5 highly nonlinear optical fibers by n the different Bragg grating of centre frequency, 6 optical band pass filters, 9 photo-couplers;
Wherein, N * 1 wavelength division multiplexer will control light and flashlight is combined into one tunnel formation light load module 1, and photo-coupler 9 is introduced the output of light load module 1 in the F-P chamber.
Making front cavity mirror 3 and connect with n the different Fiber Bragg Grating FBG of centre frequency with the optical fiber completely reflecting mirror is 4 composition F-P cavity configurations; N represents the number of Fiber Bragg Grating FBG.
Effect of Back-Cavity Mirror 4 and highly nonlinear optical fiber 5 that n Fiber Bragg Grating FBG of the front cavity mirror 3 that caching control unit 2 is made of the optical fiber completely reflecting mirror, different frequency constitutes constitute.
Embodiment:
Below in conjunction with accompanying drawing technical scheme of the present invention is described further:
The buffer implementation comprises light load module 1, caching control unit 2 and a bandpass filter 6 as shown in Figure 1, and wherein bandpass filter 6 is the prior art parts.(frequency is ω to write control light
3) (frequency is ω with flashlight
2) can after the light input end coupling, enter caching control unit 2, two the chamber mirrors 3,4 in the caching control unit 2 constitute a Fabry-Perot cavity configuration, and can make frequency is ω
1Light signal in the chamber back and forth the transmission.The four-wave mixing process takes place in control light and the highly nonlinear optical fiber 5 of flashlight in the chamber and satisfy 2 ω
3-ω
2=ω
1The time, it is ω that the flashlight data will be replicated in frequency
1The four-wave mixing component on, latched by Fabry-Perot-type cavity.Write control light and continue to exist for buffered signal and provide gain, obtain enough cache-times with the loss of compensating signal in the chamber.When needs were read signal, frequency was ω
4The control light of reading after light input end coupling, enter buffer memory and control module and new four-wave mixing process take place with buffered signal, produce ω
5(2 ω
4-ω
1=ω
5) light signal, this light signal forms the read output signals output of buffers by bandpass filter 6 back, finally finishes light-operated random read-write caching.After all control light disappeared, the light signal in the chamber can be owing to dyingout, and buffer is cleared.It should be noted that the single signal transmission time that Fabry-Perot-type cavity provides should form clock oscillation to prevent buffered signal greater than 1/2nd of signal duration.
In the buffer of the present invention, light load module 1, caching control unit 2 have multiple assembled scheme, provide several below:
Embodiment 1: the Fabry-Perot cavity configuration full optical buffer of parametric process control, as shown in Figure 2, it utilizes one 3 * 1 wavelength division multiplexer (WDM) 1 (perhaps use coupling mechanism, WDM and coupling mechanism are the prior art parts) frequency can be respectively ω
3, ω
4And ω
2Write, read and be coupled as one the road with flashlight and constitute the light load module.2 ω are satisfied in the selection of light frequency
3-ω
2=ω
1With 2 ω
4-ω
1=ω
5Two conditions.The foveal reflex frequency is all ω
1Fiber Bragg Grating FBG to constituting a Fabry-Perot cavity configuration as chamber mirror 3 and 4, the Fiber Bragg Grating FBG that is adopted is the prior art parts.Write fashionablely when the needs signal, write control light and flashlight directly enters in the chamber by chamber mirror 3 and the four-wave mixing process takes place in highly nonlinear optical fiber 5.The four-wave mixing component that is produced has duplicated the information of flashlight and has repeatedly been reflected by two chamber mirrors of Fabry-Perot-type cavity, forms back and forth transmission, obtains the buffer memory of delaying time.Before needs are read, write control light and can be continuously buffered signal light and provide parametric gain to remedy the loss of flashlight in the chamber, obtain enough cache-times.After reading control light beam goes into Fabry-Perot-type cavity, buffered signal light produces new four-wave mixing process with reading control light, and signal is read in the chamber and by wave filter 6 back outputs.Turn-off all control light, not gain in the chamber, buffered signal can realize emptying of buffer owing to attenuation disappears.
Embodiment 2: the Fabry-Perot cavity configuration full optical buffer of parametric process control, as shown in Figure 3, the difference of it and Fig. 2 is: utilize two output terminals by 3dB photo-coupler 7 to be connected to form a loop 8 and form the optical fiber completely reflecting mirror.As front cavity mirror 3, it can be ω with a foveal reflex frequency with this optical fiber completely reflecting mirror
1Fiber Bragg Grating FBG 4 constitute one to frequencies omega
1Light signal is selected the Fabry-Perot cavity configuration of reflection.Controlling light and flashlight this moment needs a coupling mechanism 9 to introduce in the chamber.
Embodiment 3: parameter according to the full optical buffer of length as shown in Figure 4, it constitutes with Fig. 3 similar, this time load module realizes that by a N * 1 wavelength division multiplexer N * 1 wavelength division multiplexer is the prior art parts.The frequency of the arbitrary passage of wavelength division multiplexer is ω
i, ω wherein
4And ω
2Keep for and read control light and flashlight.Optical fiber completely reflecting mirror 3 and reflection frequency are respectively ω
jA series of Fiber Bragg Grating FBG 4a, 4b, 4c ... 4n constitutes one group and has the long Fabry-Perot-type cavity of different cavity.Here need 2 ω that satisfy condition
i-ω
2=ω
jAs required, appropriately choose and write the control optical frequency
i, flashlight can be replicated in corresponding four-wave mixing component ω
jGo up and buffer memory in the Fabry-Perot-type cavity of correspondence.In the time of need reading, ω
4The control light of reading to enter the generation frequency be 2 ω in the chamber in
4-ω
jThe four-wave mixing component, leach by tunable optic filter 6 and to obtain buffer output.
Claims (9)
1. Fabry-Perot cavity configuration full optical buffer based on highly nonlinear optical fiber, it comprises light load module (1), caching control unit (2) and a bandpass filter (6), it is characterized in that: light load module (1) will be controlled light and flashlight and be combined into one the tunnel and inject caching control unit (2); Caching control unit (2) comprises front cavity mirror (3), Effect of Back-Cavity Mirror (4) and highly nonlinear optical fiber (5), two chamber mirrors (3) and (4) mechanics Fabry-Perot-type cavity configuration, and highly nonlinear optical fiber places in the chamber; Bandpass filter (6) leaches the signal of reading from caching control unit (2).
2. the Fabry-Perot cavity configuration full optical buffer based on highly nonlinear optical fiber according to claim 1 is characterized in that: be all ω with the foveal reflex frequency
1Fiber Bragg Grating FBG to constituting a Fabry-Perot cavity configuration as chamber mirror (3) and (4).
3. Fabry-Perot cavity configuration full optical buffer according to claim 1 is characterized in that: constitute an optical fiber total reflective mirror as Fabry-Perot-type cavity front cavity mirror (3) with a 3dB fiber coupler, the foveal reflex frequency is ω
1Fiber Bragg Grating FBG as Fabry-Perot-type cavity Effect of Back-Cavity Mirror (4).
4. according to claim 1 or 2 or 3 described Fabry-Perot cavity configuration full optical buffers based on highly nonlinear optical fiber, it is characterized in that: highly nonlinear optical fiber (5) places Fabry-Perot-type cavity inside, in order to realize the nonlinear interaction (four-wave mixing process, parameter amplification process) between control light and the flashlight, finish writing, read, the gain compensation function.
5. according to claim 1 or 2 or 3 described Fabry-Perot cavity configuration full optical buffers based on highly nonlinear optical fiber, it is characterized in that: for frequency is ω
2Flashlight, can adopt a frequency is ω
3(2 ω
3-ω
2=ω
1) direct current light as writing control light, make flashlight and control light that the four-wave mixing process take place in highly nonlinear optical fiber, the generation frequency is ω
1Light signal and latched by Fabry-Perot-type cavity, realize that light signal writes.The employing frequency is ω
4Direct current light as reading control, with frequency be ω
1Light signal generating four-wave mixing process, the generation frequency is ω
5(2 ω
4-ω
1=ω
5) light signal, realize signal reading in the chamber.
6. according to claim 1 or 2 or 3 described Fabry-Perot cavity configuration full optical buffers based on highly nonlinear optical fiber, it is characterized in that: what continue to exist writes control light and can provide parametric gain for the light signal of buffer memory, with the loss of compensating signal in Fabry-Perot-type cavity.
7. according to claim 1 or 2 or 3 described Fabry-Perot cavity configuration full optical buffers based on highly nonlinear optical fiber, it is characterized in that: the light signal of reading in the chamber is ω by a centre frequency
5Optical band pass filter leach, obtain buffer output.
8. according to claim 1 or 2 or 3 described Fabry-Perot cavity configuration full optical buffers based on highly nonlinear optical fiber, it is characterized in that: when all control light disappearances, buffer will be cleared.
9. according to claim 1 or 2 or 3 described Fabry-Perot cavity configuration full optical buffers based on highly nonlinear optical fiber, it is characterized in that: adopt the multi-stage fiber Bragg grating of different reflection frequency to constitute Effect of Back-Cavity Mirror 4, can realize the light signal buffer memory of parameter by selecting to write the control light wavelength according to length.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103794976A (en) * | 2014-02-25 | 2014-05-14 | 厦门大学 | Laser with Fabry-Perot band-pass filter serving as laser resonant cavity output mirror |
| WO2015100838A1 (en) * | 2013-12-31 | 2015-07-09 | 华为技术有限公司 | Annular optical buffer and optical signal storage and reading method |
| US9709744B2 (en) | 2013-12-31 | 2017-07-18 | Huawei Technologies Co., Ltd. | Annular optical shifter and method for shifting optical signal |
| CN112491477A (en) * | 2020-11-18 | 2021-03-12 | 南京工程学院 | Device and method for realizing optical cache based on semiconductor optical amplifier controlled by optical signal |
| CN113724758A (en) * | 2021-09-01 | 2021-11-30 | 哈尔滨工程大学 | Multi-core optical fiber memristor and erasing, writing and reading scheme |
| WO2023219002A1 (en) * | 2022-05-12 | 2023-11-16 | 学校法人早稲田大学 | Quantum wavelength converter, heralded single photon source |
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2009
- 2009-04-23 CN CN2009101025289A patent/CN101546086B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015100838A1 (en) * | 2013-12-31 | 2015-07-09 | 华为技术有限公司 | Annular optical buffer and optical signal storage and reading method |
| US9709744B2 (en) | 2013-12-31 | 2017-07-18 | Huawei Technologies Co., Ltd. | Annular optical shifter and method for shifting optical signal |
| US9807478B2 (en) | 2013-12-31 | 2017-10-31 | Huawei Technologies Co., Ltd. | Optical buffer and methods for storing optical signal |
| CN103794976A (en) * | 2014-02-25 | 2014-05-14 | 厦门大学 | Laser with Fabry-Perot band-pass filter serving as laser resonant cavity output mirror |
| CN112491477A (en) * | 2020-11-18 | 2021-03-12 | 南京工程学院 | Device and method for realizing optical cache based on semiconductor optical amplifier controlled by optical signal |
| CN112491477B (en) * | 2020-11-18 | 2022-06-17 | 南京工程学院 | Device and method for realizing optical cache based on semiconductor optical amplifier controlled by optical signal |
| CN113724758A (en) * | 2021-09-01 | 2021-11-30 | 哈尔滨工程大学 | Multi-core optical fiber memristor and erasing, writing and reading scheme |
| CN113724758B (en) * | 2021-09-01 | 2023-07-14 | 哈尔滨工程大学 | Multicore fiber memristor device and scheme of erasing, writing and reading |
| WO2023219002A1 (en) * | 2022-05-12 | 2023-11-16 | 学校法人早稲田大学 | Quantum wavelength converter, heralded single photon source |
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| CN101546086B (en) | 2011-01-26 |
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