CN102185657A - Full-optical 3R regeneration device based on magnetically controlled optical fiber parameter oscillator - Google Patents
Full-optical 3R regeneration device based on magnetically controlled optical fiber parameter oscillator Download PDFInfo
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Abstract
The invention discloses a full-optical 3R regeneration device based on a magnetically controlled optical fiber parameter oscillator. The full-optical 3R regeneration device comprises an optical wavelength division multiplexer, a high-nonlinearity optical fiber or a magneto-optical high-nonlinearity optical fiber, an optical demultiplexer, an optical amplifier, an optical splitter and a magneto-optical control unit; a reference optical signal forms a high-power optical clock signal through the magnetically controlled optical fiber parameter oscillator; the reference optical signal and a synchronous multi-wavelength signal to be shaped generate four-wave mixing in the same high-nonlinearity optical fiber or magneto-optical high-nonlinearity optical fiber, so a magnetically controllable multi-wavelength 3R regeneration function can be realized; and the quality of a clock signal and a regeneration signal can be adjusted quickly and precisely in a magneto-optical control way. By the magnetically controlled multi-wavelength 3R regeneration device, clock extraction and nonlinearity optical gate regeneration are realized at the same time in a single parameter oscillation structure; compared with the conventional regeneration system with the independent clock extraction and the independent nonlinearity optical gate regeneration, the device has the advantages of greatly enhancing the systematic integration and reducing the cost; moreover, by the magneto-optical control function, the shortcoming that the conventional 3R regenerator cannot be configured intelligently can be overcome.
Description
Technical field
The present invention relates to full optical information processing technical field, be specifically related to a kind of full light 3R regenerating unit based on the Fiber-optic parameter oscillator with magnetic field controlled function.
Background technology
Full optical information processing technology can break through the speed bottleneck of light-electrical-optical conversion, and the ultrahigh speed information processing capability up to T bit magnitude is provided, and is one of key technology of following intelligent all-optical network.And full light 3R regeneration techniques is the core technology of full optical information processing, its have simultaneously again amplify, shaping feature regularly and more again, can the compensation power loss, reduce signal peak shake and timing jitter that noise causes.And full light 3R regeneration techniques can also provide the wavelength Conversion function, and this signal processing unit that has route and regeneration function simultaneously has broad application prospects in the ultrahigh speed ASON.
Research at present complete light 3 R regenerator is the most widely carried out at single wavelength.And the multi-wavelength transmission feature of wavelength-division multiplex system will cause a whole set of corresponding with it complete light 3 R regenerator of different wave length needs, and this has increased system cost greatly.And realization multi-wavelength 3R regeneration not only can be saved the equipment usage quantity in single device, can also improve the bit number that specific energy consumption is handled, and has the advantages that to improve device integration and energy utilization rate.
Because full light 3R regeneration techniques need be realized the Clock Extraction function and the optical gate regeneration function of signal simultaneously, so complete light 3 R regenerator comprises Clock Extraction unit and two parts of nonlinear optical gate cell.The technology that is used for the Clock Extraction unit at present mainly contains FP comb filtering, distributed feedback laser, Sagnac interferometer and parametric oscillator.And the various interference structures that the technology that realizes the nonlinear optical gate cell mainly contains cross-phase modulation (XPM) technology, four wave mixing (FWM) technology and utilizes nonlinear device to build.The single wavelength 3R regenerator that utilizes these technology to build can be realized the regeneration function that 100Gbps is above.And the 3R Study of Regeneration Technique of multi-wavelength is less, wherein the Central China University of Science and Technology a kind of cascade clock recovery unit has been proposed, based on the single nonlinear optical gate device of XPM effect and the multi-wavelength 3R regeneration scheme of comb filter.This scheme is similar to single wavelength 3R scheme, has all adopted clock recovery and shaping pulse cascade system independently mutually, has increased overhead, is unfavorable for improving the integrated level of system.
Utilization has devices such as optical isolator that the magneto-optical crystal of higher magneto optical effect/film realizes, revolving mirror, optical switch and is widely used in modern optical communication systems already, and the recent intrinsic magneto-optic Faraday effect that studies show that direct use single mode flint glass optical fiber can realize the control of high-speed light polarization state, and this has overcome the problem that mechanical type Polarization Controller response speed is slow, control precision is low.And in ultrahigh speed ASON of future generation, the control of the polarization state of light signal is one of important topic of research, and magneto optical effect is controlled fast, accurately and will be had broad application prospects the optical polarization attitude.
Summary of the invention
Problem to be solved by this invention is: how can overcome the separate low problem of level of integrated system that causes of conventional all-optical 3R regenerating unit Clock Extraction unit and nonlinear optical gate cell, can reduce simultaneously multi-wavelength regenerating unit in the wavelength-division multiplex system complexity, reduce cost.
Technical problem proposed by the invention is to solve like this: a kind of full light 3R regenerating unit based on magnetic control Fiber-optic parameter oscillator is provided, it is characterized in that:
1. comprise the light annular chamber that is in turn connected to form by light wavelength division multiplexing, highly nonlinear optical fiber or magneto-optic highly nonlinear optical fiber, optical demultiplexer, image intensifer and optical splitter at least;
2. the gain of described image intensifer must be satisfied the gain condition of the annular chamber starting of oscillation that is used for Clock Extraction: make the gain of light annular chamber ring a little less than the ring loss;
3. wavelength is λ
0, information rate is R
bThe RZ signal enter magnetic control Fiber-optic parameter oscillator as reference signal by described light wavelength division multiplexing, provide parametric gain by highly nonlinear optical fiber or magneto-optic highly nonlinear optical fiber for the clock signal of extracting, optical demultiplexer intercepts reference signal does not vibrate it in the light annular chamber; Wavelength is λ
1, λ
2... λ
nThe n road treat that reshaping signal also enters into the light annular chamber by light wavelength division multiplexing, described reshaping signal and the reference signal treated is synchronizing signal, directly utilizing the clock that is extracted by reference signal to treat reshaping signal carries out regularly again, light annular chamber internal clock signal power is higher as pump light, and treat that reshaping signal power is low as surveying light, enter highly nonlinear optical fiber or magneto-optic highly nonlinear optical fiber jointly, utilize the four-wave mixing in fiber effect to be respectively λ from the optical demultiplexer output wavelength
1', λ
2' ... λ
n' ideler frequency light be regenerated signal, regenerated signal is identical with reference signal, does not all vibrate in ring.
According to the full light 3R regenerating unit based on magnetic control Fiber-optic parameter oscillator provided by the present invention, it is characterized in that, magnetic control Fiber-optic parameter oscillator is the annular chamber of centralized magnetic field control, this annular chamber is by light wavelength division multiplexing, highly nonlinear optical fiber, optical demultiplexer, image intensifer, optical splitter, variable optical delay line, magneto-optic control unit and Polarization Controller are in turn connected to form, the magneto-optic control unit comprises magneto-optical crystal, solenoid and adjustable DC power supply, magneto-optical crystal adopts high yttrium iron garnet crystal or the films such as (YIG) of magneto-optic coefficient, the externally-applied magnetic field that provides magneto-optical crystal required is provided solenoid, adjustable DC power supply provides electric current for solenoid, makes it produce the continuously adjustable D.C. magnetic field of magnetic field intensity.
According to the full light 3R regenerating unit based on magnetic control Fiber-optic parameter oscillator provided by the present invention, it is characterized in that, magnetic control Fiber-optic parameter oscillator is the annular chamber of distributed magnetic field control, this annular chamber is to be in turn connected to form by light wavelength division multiplexing, magneto-optic highly nonlinear optical fiber, optical demultiplexer, image intensifer, optical splitter, variable optical delay line and Polarization Controller, described magneto-optic highly nonlinear optical fiber carries out the control of distributed magnetic field by torus for it provides axial magnetic field, and the electric current of torus is provided by adjustable DC power supply.
The present invention has utilized clock signal that magnetic control Fiber-optic parameter oscillation rings extracts from single wavelength as pump signal, with the input treat that the shaping multi-wavelength signals is together multiplexing, and in ring, realize the four wave mixing effect in the highly nonlinear optical fiber, realize full light 3R regeneration function by the ideler frequency light that obtains.Because the highly nonlinear optical fiber in the magnetic control Fiber-optic parameter oscillation rings provides needed parametric gain of Clock Extraction and the optical gate needed four wave mixing function of regenerating simultaneously, and the oscillating characteristic in the active annular chamber has improved clock signal power and need not it additionally to be amplified again, and has therefore realized two functions of Clock Extraction and non-linear optical gate regeneration in single structure simultaneously.And the magneto-optic control characteristic can be provided by dual mode, and a kind of mode is to insert centralized magneto-optic control unit to carry out magnetic field and control in ring, and this magneto-optic control unit is made of magneto-optic medium such as yig crystal/film and the adjustable solenoid of magnetic field intensity.Another kind of mode is directly to utilize the intrinsic magneto-optical property of highly nonlinear optical fiber in the ring, carries out distributed magnetic field control (highly nonlinear optical fiber that will be loaded with axial magnetic field is called the magneto-optic highly nonlinear optical fiber) by torus for optical fiber provides axial magnetic field.Because the existing intrinsic magneto-optic coefficient of silica-based optical fibers is less, the silica-based highly nonlinear optical fiber that therefore need twine hundreds of meters in torus just can obtain enough magneto-optic control characteristics.If adopt magneto-optic coefficient and the higher sulfide optical fiber of nonlinear system number average then can further shorten fiber lengths, improve the integrated level of device.
It is pointed out that and can use image intensifer to form the Active Optical Fiber parametric oscillator in the light annular chamber, this has greatly reduced the input reference signal power, but the clock signal wavelength-tunable of extracting is range limited in the gain ranging of image intensifer; Also can not use image intensifer to form the passive fiber parametric oscillator in the light annular chamber, this will increase clock signal wavelength-tunable scope, but the input reference signal power needs further to improve.
Description of drawings
Fig. 1 is a magnetic control Fiber-optic parameter oscillator schematic diagram of the present invention;
Fig. 2 is that magnetic control Fiber-optic parameter oscillator internal power develops schematic diagram;
Fig. 3 is the schematic diagram of magneto-optic unit to the control action of clock signal quality;
Fig. 4 is the Wavelength distribution schematic diagram after the multi-wavelength regeneration;
Fig. 5 is the Fiber-optic parameter oscillator schematic diagram of centralized magnetic field control;
Fig. 6 is the Fiber-optic parameter oscillator schematic diagram of distributed magnetic field control.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described:
The present invention comprises light wavelength division multiplexing, highly nonlinear optical fiber or magneto-optic highly nonlinear optical fiber, optical demultiplexer, image intensifer, optical splitter, magneto-optic control unit as shown in Figure 1.It is characterized in that, in single parametric oscillation structure, carry out the regeneration of Clock Extraction and non-linear optical gate simultaneously.Reference signal extracts clock signal by magnetic control Fiber-optic parameter oscillator, again with the simultaneous multiwavelength signal multiplexing magnetic control Active Optical Fiber parametric oscillator for the treatment of shaping in highly nonlinear optical fiber, realize non-linear optical gate regeneration based on four wave mixing.Clock signal and regenerated signal quality are then undertaken fast, are accurately regulated by the magneto-optic control mode.
The present invention utilizes the higher clock signal of magnetic control Fiber-optic parameter oscillator (MC-FOPO) internal power as pump light, with the simultaneous multiwavelength RZ signal of output by the non-linear optical gate of highly nonlinear optical fiber realization in the multiplexing MC-FOPO based on four wave mixing, to reach the purpose of multi-wavelength 3R regeneration, the meticulous adjusting of MC-FOPO is then finished by the magneto-optic control unit in the ring.Operation principle is described below:
1.MC-FOPO realize the principle of Clock Extraction:
The Clock Extraction that realizes single wavelength in the Fiber-optic parameter oscillator need satisfy two conditions: the gain of light annular chamber is a little less than the ring loss; The RZ signal rate of input is the integral multiple of oscillator fundamental frequency.When satisfying above-mentioned two conditions, just can be in ring filter center wavelength place formation parametric oscillation, and finally form clock signal.Except that the centre wavelength of input signal, the centre wavelength of clock signal can realize continuously adjustable, and limited adjustment range is the Amplifier Gain bandwidth in ring.(wavelength is λ and at light annular chamber internal clock signal
C) power is higher, (wavelength is λ when injecting signal power
0) fully can reach maximum power during loss, the parametric oscillation intracavity power develops schematic diagram as shown in Figure 2.And in experiment, the clock signal power in the light annular chamber can reach about 17dBm, and the pump signal that can be used as in the non-linear optical gate regeneration is used.
2.MC-FOPO realize the principle of magnetic field control:
In the MC-FOPO system, magnetic field control derives from magneto-optic control unit in the ring or the axial magnetic field that loads on highly nonlinear optical fiber, and two kinds of magneto-optic control modes have all been utilized magneto-optic Faraday effect.Magneto-optic Faraday effect can change the polarization state of light signal, and when linearly polarized light incided the YIG magneto-optical crystal, externally-applied magnetic field can be controlled the azimuth size of emergent ray polarised light.Therefore by regulating adjustable solenoid in the magneto-optic control unit or the outer torus electric current of magneto-optic highly nonlinear optical fiber in the MC-FOPO system, can play the effect of controlling magnetic field size, and then the polarization state of adjustable ring internal clock signal.Because in the Clock Extraction process, the parametric gain of highly nonlinear optical fiber is that polarization is relevant, therefore can regulate the gain size by the mode of magnetic control, to reach best Clock Extraction effect.
On the other hand, the equivalent theory of MC-FOPO studies show that, the effective cavity length h of parametric oscillator
EffFor:
Wherein, h is the parametric oscillator fiber lengths, κ
gBe the coupling coefficient of coupler, κ
p=V
BB is the magneto-optic coupling coefficient, V
BBe the Verdet constant of magnet-optical medium, B is a magnetic flux, and λ is a lambda1-wavelength, and n is an optical fibre refractivity.By changing the size of magnetic field B, can play the effect of adjustable parameter oscillator effective cavity length as can be seen, promptly realize the long regulatory function in chamber.Fig. 3 provides when using the magneto-optic control unit to carry out the magnetic field adjusting in the ring, and clock signal Peak Jitter that obtains in the experiment and phase jitter are with the variation relation of solenoid current i.As can be seen, by the solenoidal injection current of meticulous adjusting, can optimize the clock signal performance, when current i=2A, it is best that the clock signal quality reaches, and the clock signal eye pattern of this moment as shown in Figure 3.
3.MC-FOPO realize the principle of multi-wavelength regeneration:
MC-FOPO realizes that the regeneration of multi-wavelength optical gate mainly utilizes the four-wave mixing effect of highly nonlinear optical fiber.In four wave mixing, pump light is the clock pulse of extracting from reference signal, surveys light and treats shaping multi-wavelength RZ code data sequence for input.Because treat the shaping multi-wavelength signals and the reference signal of input are synchronizing signal, therefore can directly utilize the pumping clock signal to realize timing function again by the four wave mixing optical gate.The needed nonlinear dielectric of four wave mixing has then utilized the highly nonlinear optical fiber among the MC-FOPO once more, and the Wavelength distribution schematic diagram of highly nonlinear optical fiber exit end as shown in Figure 4.To treat the interference of reshaping signal in order reducing, to need to adjust the reference signal wavelength X on the one hand the Clock Extraction process
0With treat the reshaping signal wavelength X
nBetween the wavelength interval, increase the wavelength interval and can reduce influence Clock Extraction; On the other hand, treat reshaping signal after the highly nonlinear optical fiber outgoing, will be isolated, avoided treating reshaping signal vibration in ring, influence the Clock Extraction effect by the optical demultiplexer in the ring.
According to the difference of magnetic field control mode, the device that the present invention determines has two kinds: the Fiber-optic parameter oscillator (as shown in Figure 6) of the Fiber-optic parameter oscillator (as shown in Figure 5) of centralized magnetic field control and the control of distributed magnetic field.
Embodiment 1:
Adopt the Active Optical Fiber parametric oscillator of centralized magnetic field control, the system and device that carries out multi-wavelength 3R regeneration as shown in Figure 5.Wavelength is λ
0Reference signal by behind the amplifier, with wavelength be λ
1, λ
2... λ
nMultichannel treat that reshaping signal enters light wavelength division multiplexing, wherein the input port centre wavelength of light wavelength division multiplexing is respectively λ
0, λ
C, λ
1, λ
2... λ
n, λ
CBe the optical clock signal wavelength that extracts.Signal after multiplexing enters highly nonlinear optical fiber jointly.Highly nonlinear optical fiber can adopt silica-based highly nonlinear optical fiber, and its non linear coefficient γ is generally at 10W
-1/ km also can adopt sulfide optical fiber, bismuthates optical fiber, and the non linear coefficient of this class highly nonlinear optical fiber can be up to 1000W
-1More than/the km.The dispersion parameters of highly nonlinear optical fiber need be selected according to operation wavelength, and its zero dispersion point is in the operating wavelength range and the little highly nonlinear optical fiber of chromatic dispersion gradient helps improving the conversion efficiency of parameter amplification and four wave mixing.Behind highly nonlinear optical fiber, the multi-wavelength signals that parametric process and wavelength conversion process obtain enters optical demultiplexer jointly.The output port centre wavelength of optical demultiplexer is λ
C, λ
1', λ
2' ... λ
n', its medium wavelength is λ
CClock signal continue in MC-FOPO, to vibrate, and wavelength is λ
1', λ
2' ... λ
n' regenerated signal then by outside the optical demultiplexer output ring.
Clock signal continues to propagate in ring by isolator, and the effect of isolator is to guarantee that MC-FOPO is the one-way transmission ring.Clock signal further improves clock signal power by image intensifer in encircling, and the gain that image intensifer provides in the ring is used for the loss that each device is introduced in the compensated loop.Clock signal after the amplification is exported a part of clock signal by optical splitter as external clock.But therefore the loss of the splitting ratio of optical splitter influence ring is retained in most clock signal power in the MC-FOPO usually.Manually the effect of variable optical delay line is at the MC-FOPO work initial stage, and coarse adjustment ring length makes itself and input signal speed basically identical.
The control of centralized magnetic field is finished by the magneto-optic control unit, and it has the long feature of meticulous conditioning signal polarization state and chamber.This magneto-optic control unit is made up of following three parts: magneto-optical crystal, solenoid and adjustable DC power supply.Magneto-optical crystal can adopt magneto-optic coefficient high crystal or films such as YIG.YIG magneto-optical crystal or film have higher magneto-optic coefficient, the Verdet constant at its 1550nm wavelength place can only need provide hundreds of Gauss's magnetic field just can obtain the nearly 90 polarization state rotations of spending in the YIG film of millimeter magnitude up to 2260rad/Tm, thickness, and this has reduced the volume of magneto-optic unit greatly.Solenoid provides magneto-optical crystal required applying dc magnetic field, is that 3 centimetres solenoid is an example with internal diameter, in the magnetic field intensity that can produce under the 2A direct current more than 250 Gausses.Adjustable DC power supply provides electric current for solenoid, makes it produce the continuously adjustable D.C. magnetic field of magnetic field intensity.Wavelength is λ
CClock signal at last by reentering light wavelength division multiplexing behind the Polarization Controller, Polarization Controller is used for signal state of polarization in the MC-FOPO work initial stage coarse adjustment ring, to reach higher parametric gain.
Can reach optimal clock extraction, optical gate regeneration effect according to the manual variable delay line of said process coarse adjustment, Polarization Controller and accurate adjustment magneto-optic unit.Regenerated signal obtains from the optical demultiplexer output, the phase jitter of regenerated signal, Peak Jitter and extinction ratio will be improved significantly.
Embodiment 2:
Adopt the Active Optical Fiber parametric oscillator of distributed magnetic field control, the system and device that carries out multi-wavelength 3R regeneration as shown in Figure 6.Wavelength is λ
0Reference signal by behind the amplifier, with wavelength be λ
1, λ
2... λ
nMultichannel treat that reshaping signal enters light wavelength division multiplexing, wherein the input port centre wavelength of light wavelength division multiplexing is respectively λ
0, λ
C, λ
1, λ
2... λ
n, λ
CBe the optical clock signal wavelength that extracts.Signal after multiplexing enters the magneto-optic highly nonlinear optical fiber jointly.The magneto-optic highly nonlinear optical fiber also will utilize its intrinsic magneto optical effect except as the nonlinear dielectric, realize the control of distributed magnetic field under the effect of torus.The magneto-optic highly nonlinear optical fiber can adopt silica-based highly nonlinear optical fiber, but its magneto-optic coefficient is less, therefore needs hundreds of meters fiber lengths; Also can adopt sulfide optical fiber, it is except the non linear coefficient height, and its magneto-optic coefficient is also than high one to two order of magnitude of silica-based optical fibers.The dispersion parameters of magneto-optic highly nonlinear optical fiber also needs according to operation wavelength selected, and the zero dispersion point is in the operating wavelength range and the little magneto-optic highly nonlinear optical fiber of chromatic dispersion gradient helps improving the conversion efficiency of parameter amplification and four wave mixing.The electric current of torus is provided by adjustable DC power supply, and torus diameter influence ring internal magnetic field size is that 9 centimetres torus is an example with a diameter, can obtain the D.C. magnetic field of nearly 100Gs usually.Behind the magneto-optic highly nonlinear optical fiber, the multi-wavelength signals that parametric process and wavelength conversion process obtain enters optical demultiplexer jointly.The output port centre wavelength of optical demultiplexer is λ
C, λ
1', λ
2' ... λ
n', its medium wavelength is λ
CClock signal continue in MC-FOPO, to vibrate, and wavelength is λ
1', λ
2' ... λ
n' regenerated signal then by outside the demodulation multiplexer output ring.
Clock signal continues to propagate in ring by isolator, and the effect of isolator is to guarantee that MC-FOPO is the one-way transmission ring.Clock signal further improves clock signal power by amplifier in encircling, and the gain that amplifier provides in the ring is used for the loss that each device is introduced in the compensated loop.Clock signal after the amplification is exported a part of clock signal by optical splitter as external clock.But therefore the loss of the splitting ratio of optical splitter influence ring is retained in most clock signal power in the MC-FOPO usually.Manually the effect of variable optical delay line is at the MC-FOPO work initial stage, and coarse adjustment ring length makes itself and input signal speed basically identical.And Polarization Controller is used for signal state of polarization in the MC-FOPO work initial stage coarse adjustment ring, to reach higher parametric gain.
Claims (3)
1. full light 3R regenerating unit based on magnetic control Fiber-optic parameter oscillator is characterized in that:
1. comprise the light annular chamber that is in turn connected to form by light wavelength division multiplexing, highly nonlinear optical fiber or magneto-optic highly nonlinear optical fiber, optical demultiplexer, image intensifer and optical splitter at least;
2. the gain of described image intensifer must be satisfied the gain condition of the annular chamber starting of oscillation that is used for Clock Extraction: make the gain of ring of light an actor's rendering of an operatic tune ring a little less than the ring loss;
3. wavelength is λ
0, information rate is R
bThe RZ signal enter magnetic control Fiber-optic parameter oscillator as reference signal by described light wavelength division multiplexing, provide parametric gain by highly nonlinear optical fiber or magneto-optic highly nonlinear optical fiber for the clock signal of extracting, optical demultiplexer intercepts reference signal does not vibrate it in ring of light an actor's rendering of an operatic tune; Wavelength is λ
1, λ
2... λ
nThe n road treat that reshaping signal also enters into ring of light an actor's rendering of an operatic tune by light wavelength division multiplexing, described reshaping signal and the reference signal treated is synchronizing signal, directly utilizing the clock that is extracted by reference signal to treat reshaping signal carries out regularly again, ring of light an actor's rendering of an operatic tune internal clock signal power is higher as pump light, and treat that reshaping signal power is low as surveying light, enter highly nonlinear optical fiber or magneto-optic highly nonlinear optical fiber jointly, utilize the four-wave mixing in fiber effect to be respectively λ from the optical demultiplexer output wavelength
1', λ
2' ... λ
n' ideler frequency light be regenerated signal, regenerated signal is identical with reference signal, does not all vibrate in ring.
2. the full light 3R regenerating unit based on magnetic control Fiber-optic parameter oscillator according to claim 1, it is characterized in that, magnetic control Fiber-optic parameter oscillator is the annular chamber of centralized magnetic field control, this annular chamber is by light wavelength division multiplexing, highly nonlinear optical fiber, optical demultiplexer, image intensifer, optical splitter, variable optical delay line, magneto-optic control unit and Polarization Controller are in turn connected to form, the magneto-optic control unit comprises magneto-optical crystal, solenoid and adjustable DC power supply, magneto-optical crystal adopts high crystal or the films such as yttrium iron garnet of magneto-optic coefficient, the externally-applied magnetic field that provides magneto-optical crystal required is provided solenoid, adjustable DC power supply provides electric current for solenoid, makes it produce the continuously adjustable D.C. magnetic field of magnetic field intensity.
3. the full light 3R regenerating unit based on magnetic control Fiber-optic parameter oscillator according to claim 1, it is characterized in that, magnetic control Fiber-optic parameter oscillator is the annular chamber of distributed magnetic field control, this annular chamber is to be in turn connected to form by light wavelength division multiplexing, magneto-optic highly nonlinear optical fiber, optical demultiplexer, image intensifer, optical splitter, variable optical delay line and Polarization Controller, described magneto-optic highly nonlinear optical fiber carries out the control of distributed magnetic field by torus for it provides axial magnetic field, and the electric current of torus is provided by adjustable DC power supply.
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| CN104317139A (en) * | 2014-11-25 | 2015-01-28 | 电子科技大学 | Multi-wavelength all-optical 3R regenerative apparatus based on magnetic control optical fiber parametric oscillator |
| WO2018161428A1 (en) * | 2017-03-10 | 2018-09-13 | 电子科技大学 | Optically-controlled optical pam signal regeneration device |
| WO2019174117A1 (en) * | 2018-03-15 | 2019-09-19 | 电子科技大学 | Flexibly adjustable multi-level all-optical 2r regeneration apparatus |
| CN113991412A (en) * | 2021-09-15 | 2022-01-28 | 中国科学院福建物质结构研究所 | Intermediate infrared Q-switched laser based on YIG magneto-optical crystal |
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| CN101304284A (en) * | 2008-06-20 | 2008-11-12 | 华中科技大学 | Multichannel complete light 3R regenerator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104317139A (en) * | 2014-11-25 | 2015-01-28 | 电子科技大学 | Multi-wavelength all-optical 3R regenerative apparatus based on magnetic control optical fiber parametric oscillator |
| CN104317139B (en) * | 2014-11-25 | 2017-03-29 | 电子科技大学 | A kind of multi-wavelength all-optical 3R regeneration device based on magnetic control Fiber-optic parameter agitator |
| WO2018161428A1 (en) * | 2017-03-10 | 2018-09-13 | 电子科技大学 | Optically-controlled optical pam signal regeneration device |
| WO2019174117A1 (en) * | 2018-03-15 | 2019-09-19 | 电子科技大学 | Flexibly adjustable multi-level all-optical 2r regeneration apparatus |
| CN113991412A (en) * | 2021-09-15 | 2022-01-28 | 中国科学院福建物质结构研究所 | Intermediate infrared Q-switched laser based on YIG magneto-optical crystal |
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Application publication date: 20110914 |