CN108923242A - A kind of soliton generation system based on black phosphorus saturable absorber - Google Patents
A kind of soliton generation system based on black phosphorus saturable absorber Download PDFInfo
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- CN108923242A CN108923242A CN201810888722.3A CN201810888722A CN108923242A CN 108923242 A CN108923242 A CN 108923242A CN 201810888722 A CN201810888722 A CN 201810888722A CN 108923242 A CN108923242 A CN 108923242A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/13—Stabilisation of laser output parameters, e.g. frequency or amplitude
- H01S3/1305—Feedback control systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/0405—Conductive cooling, e.g. by heat sinks or thermo-electric elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
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Abstract
A kind of soliton generation system based on black phosphorus saturable absorber of the invention belongs to photoelectronic device technical field.Its primary structure has Polarization Controller (1), 1 × N photoswitch (2), optical fiber group (3), 1 × N photo-coupler (4), saturable absorber (5), center wavelength tuning device (6) etc..The present invention can generate a variety of different types of solitons, easy to use, and when environmental parameter changes, the soliton sufficient center wavelength accuracy of output.
Description
Technical field
The invention belongs to photoelectronic device technical field, in particular to a kind of soliton based on black phosphorus saturable absorber
Generation system.
Background technique
Soliton is a kind of ultrashort light pulse of special shape, its shape, amplitude and speed during propagation are all tieed up
It holds constant.The characteristics of soliton, determines that it has a wide range of applications in the communications field, first it message capacity it is big：It passes
Defeated code rate generally up to 20Gb/s, reaches as high as 100Gb/s or more, and secondly bit error rate is low, strong antijamming capability：Soliton is passing
It is remained unchanged during defeated and the insulating characteristics of soliton determines that the bit error rate of Propagation of Soliton is significantly less than conventional fiber and leads to
Letter, or even can realize that the bit error rate is lower than the zero defect fiber optic communication of 10-12, relay station can not had to again：As long as being damaged to optical fiber
Consumption carries out gain compensation, can transmit undistortedly optical signal extremely at a distance, to eliminate, photoelectric conversion, shaping is put again
Greatly, error code, electro-optic conversion are checked, the complex processes such as retransmits again.It is well known that the light of soliton generation system output
Orphan's central wavelength is easy to be influenced by external conditions such as environment temperatures, and in practical applications, central wavelength is as soliton
Most important parameter, stability directly determines the quality of soliton, when soliton being especially applied to communication, middle cardiac wave
The long unstable stability etc. that will influence whether communication, and then influence communication quality.
It is that this seminar applies for a kind of " Erbium doped fiber laser on June 7th, 2014 with the immediate prior art of the present invention
The soliton pulses generator that device is constituted " (application No. is 2014102507203), the patent control single mode optical fiber by photoswitch
Length, realize the purpose that same device generates different type soliton.But the patent and other solitons that generate show
Have the shortcomings that the equally generally existing central wavelength of technology is unstable.Therefore, the existing technology for generating soliton is also needed into one
It walks perfect.
Summary of the invention
In order to which the central wavelength for the soliton for overcoming existing soliton generation system to generate is led vulnerable to environmental parameter influence
The defect for causing central wavelength unstable, the present invention provide a kind of soliton generation system of sufficient center wavelength accuracy, work as environmental condition
It changes when the central wavelength of soliton being caused to shift, the shadow that the present invention inhibits external environment to generate using compensation circuit
The central wavelength for the soliton for ringing, and then generating system remains unchanged, to improve the stability of soliton central wavelength.
The purpose of the present invention is achieved through the following technical solutions：
A kind of soliton generation system based on black phosphorus saturable absorber, structure have, and the output end of optoisolator 7 is logical
It crosses Er-doped fiber 8 to be connected with the common end of light wavelength division multiplexing 9, the end 980nm of light wavelength division multiplexing 9 is defeated with pump light source 10
Outlet is connected, and the end 1550nm of light wavelength division multiplexing 9 is connected with the input terminal of the first photo-coupler 11, the first photo-coupler 11
90% output end is connected with the input terminal of Polarization Controller 1, and the output end of Polarization Controller 1 is public defeated with 1 × N photoswitch 2
Enter end to be connected, N number of output end of 1 × N photoswitch 2 passes through the different single mode optical fibers and 1 × N optocoupler of the N item in optical fiber group 3 respectively
N number of input terminal of clutch 4 is connected, and the optical fiber group 3 is made of the different single mode optical fiber of N length, N be 2~8 it is whole
Number, the public output of 1 × N photo-coupler 4 are connected with one end of black phosphorus saturable absorber 5；
It is characterized in that, structure in addition, the other end and the center wavelength tuning device 6 of black phosphorus saturable absorber 5 it is defeated
Enter end to be connected, the output end of center wavelength tuning device 6 is connected with the input terminal of optoisolator 7；First photo-coupler 11
10% output end is connected with the input terminal of the second photo-coupler 12, and 10% output end of the second photo-coupler 12 is as of the invention
Final output, 90% output end of the second photo-coupler 12 are connected with an input terminal of third photo-coupler 13, third optocoupler
One output end of clutch 13 is connected with the second faraday rotation mirror 16, the another output and winding of third photo-coupler 13
One end of optical fiber on piezoelectric ceramics 14 is connected, the other end of the optical fiber on piezoelectric ceramics 14 and the first faraday rotation mirror 15
Input terminal be connected, the input terminal of photoelectric conversion circuit 17 is connected with another input terminal of third photo-coupler 13, photoelectricity turn
The input terminal for changing the output end and function translation circuit 18 of circuit 17 is connected, the output end of functional transformation circuit 18 and adaptive width
The signal input part for spending normalizing circuit 19 is connected, the signal output end and phase-comparison circuit 20 of adaptive amplitude normalizing circuit 19
An input terminal be connected, the reference voltage input terminal of the output end of reference voltage circuit 25 and adaptive amplitude normalizing circuit 19
It is connected, the output end of adaptive amplitude normalizing circuit 19 is connected with an input terminal of phase-comparison circuit 20, phase bit comparison electricity
The output end on road 20 is connected with single-chip microcontroller 21, and single-chip microcontroller 21 is connected with the input control end in controllable frequency source 23, controllable frequency source
23 sinusoidal signal output end is connected with another input terminal of phase-comparison circuit 20, also with driver circuit for piezoelectric ceramics 24
Input terminal is connected, and the output end of driver circuit for piezoelectric ceramics 24 is connected with the control terminal of piezoelectric ceramics 14, single-chip microcontroller 21 and temperature
The temperature setting end of control circuit 22 is connected, in the current output terminal and center wavelength tuning device 6 of temperature-control circuit 22
Semiconductor heat electric refrigerator 64 is connected, the thermistor input terminal of temperature-control circuit 22 and the heat of center wavelength tuning device 6
Quick resistance 63 is connected；
The structure of the center wavelength tuning device 6 is, aluminium block 61 lower surface and cooling fin 65 upper surface it
Between accompany semiconductor heat electric refrigerator 64；Thermistor 63 and Bragg grating 62 are attached to the upper surface of aluminium block 61；Thermistor
63 are connected with the thermistor input terminal of temperature-control circuit 22；The electricity of semiconductor heat electric refrigerator 64 and temperature-control circuit 22
Output end is flowed to be connected；One end of Bragg grating 62 is connected with the second port of optical circulator 66, the first end of optical circulator 66
The input terminal of wave length tuning device 6, is connected with the black phosphorus saturable absorber 5 centered on mouthful, and the of optical circulator 66
The output end of wave length tuning device 6 is connected with the input terminal of the optoisolator 7 centered on three ports；
The structure of the functional transformation circuit 18 is, one end of capacitor C3 and the pin 12 of trigonometric function converter U1 and
One end of resistance R2 is connected, and input terminal of the other end of capacitor C3 as functional transformation circuit 20 is denoted as port ACOS_in, with
The output end of photoelectric conversion circuit 17 is connected；The other end of resistance R2 is grounded；The pin 2 of trigonometric function converter U1,3,4,5,
8,11,13 ground connection, pin 9,10 are connected with one end of capacitor C2 and -12V power supply, the other end ground connection of capacitor C2；Trigonometric function
The pin 6 of converter U1 is connected with pin 7, and pin 16 is connected with one end of+12V power supply and capacitor C1, the other end of capacitor C1
Ground connection；The pin 1 of trigonometric function converter U1 is connected with the sliding end of slide rheostat W1, one end of slide rheostat W1 and electricity
The one end for hindering R1 is connected, and the other end of resistance R1 is connected with the pin 14 of trigonometric function converter U1, the cunning of slide rheostat W1
Output end of the moved end as functional transformation circuit 18, is denoted as port ACOS_out, the signal with adaptive amplitude normalizing circuit 19
Input terminal is connected；The model AD639 of the trigonometric function converter U1；
The structure of the adaptive amplitude normalizing circuit 19 is one end of capacitor C1 and one end of resistance R21 and chip
The pin 3 of U2 is connected, the other end ground connection of resistance R21, letter of the other end of capacitor C1 as adaptive amplitude normalizing circuit 19
Number input terminal, is denoted as port ADAPT_in, and the port ACOS_out of and function translation circuit 18 is connected；Pin 1, the pipe of chip U2
Foot 7, pin 8, pin 14 are grounded, and pin 2 is connected with+5V power supply with pin 4, and pin 11 is connected with pin 12 and and capacitor
One end of C5 and+5V power supply are connected, the other end ground connection of capacitor C5；The pin 13 of chip U2 is connected with one end of capacitor C4, electricity
Hold the other end ground connection of C4；The pin 9 of chip U2 is connected with one end of capacitor C6, the other end ground connection of capacitor C6；Chip U2's
Pin 5 is connected with one end of resistance R20 and resistance R19, the other end ground connection of resistance R20, the other end and amplifier U8 of resistance R19
Output end and one end of resistance R17 be connected, the positive power source terminal 7 of amplifier U8 connects+5V power supply, negative power end ground connection；Resistance R17's
The other end is connected with one end of one end of resistance R15 and resistance R16, and is connected to the inverting input terminal of amplifier U8；Amplifier U8's is same
Phase input terminal is connected with one end of resistance R18, and the other end of resistance R18 is connected with+2.5V power supply；The other end of resistance R15 with
One end of capacitor C10 is connected, and is connected to the output end of amplifier U7；Positive supply termination+5V the power supply of amplifier U7, negative supply termination
Ground；The other end of capacitor C10 is connected with one end of slide rheostat W3 and sliding end, and is connected to the inverting input terminal of amplifier U7；
The non-inverting input terminal of amplifier U7 is connected with one end of resistance R14, and the other end of resistance R14 is connected with+2.5V power supply；Slide variable resistance
The other end of device W3 is connected with one end of resistance R13；The other end of resistance R16 and the sliding end of slide rheostat W2 and amplifier U6
Output end be connected, one end of slide rheostat W2 is connected with one end of resistance R11；The other end of resistance R11 is with resistance R10's
One end is connected, and is connected to the inverting input terminal of amplifier U6；Positive supply termination+5V the power supply of amplifier U6, negative power end ground connection；Amplifier
The non-inverting input terminal of U6 is connected with one end of resistance R12, and the other end of resistance R12 is connected with+2.5V power supply；Resistance R10's is another
One end is connected with one end of the other end of resistance R13 and resistance R7, and is connected to the output end of amplifier U5；The other end of resistance R7 with
One end of resistance R6 is connected, and is connected to the inverting input terminal of amplifier U5；The output end of another termination amplifier U4 of resistance R6, amplifier
Positive supply termination+5V the power supply of U5, negative power end ground connection；One end of resistance R8 is connected with one end of resistance R9, and is connected to amplifier
The other end of the non-inverting input terminal of U5, resistance R9 is connected with+2.5V power supply；The other end of resistance R8 is as adaptive amplitude normalizing
The reference voltage input terminal of circuit 19 is connected with the reference voltage output terminal of reference voltage circuit 25；The pin 10 of chip U2 is made
For the signal output end of adaptive amplitude normalizing circuit 19, it is denoted as port ADAPT_out, it is defeated with one of phase-comparison circuit 20
Enter end to be connected；The pin 10 of chip U2 is connected with one end of capacitor C7, the other end of capacitor C7 and one end of resistance R22 and amplifier
The non-inverting input terminal of U3 is connected, the other end ground connection of resistance R22；One end of resistance R3 and one end of capacitor C8 and diode D1's
Anode is connected, and is connected to the inverting input terminal of amplifier U3, and the substrate (i.e. pin 8) of amplifier U3 is connected to the anti-phase input of amplifier U3
End；Positive supply termination+5V the power supply of amplifier U3, negative supply termination -5V power supply；The other end of capacitor C8 and the cathode of diode D1
And the anode of diode D2 is connected, and is connected to the output end of amplifier U3；The other end of resistance R3 and one end of resistance R4 and amplifier
The inverting input terminal of U4 is connected, and the other end of resistance R4 is connected with the grid of the cathode of diode D2 and field-effect tube Q1, field effect
Should the source electrode of pipe Q1 be connected with one end of one end of capacitor C9 and resistance R5, the other end phase of the other end and resistance R5 of capacitor C9
Connect and is grounded；The source electrode of field-effect tube Q1 is connected with the drain electrode of field-effect tube Q1, and is connected to the non-inverting input terminal of amplifier U4；Amplifier
The inverting input terminal of U4 is connected with the output end of the substrate of amplifier U4 and amplifier U4；Positive supply termination+5V the power supply of amplifier U3 is born
Power supply termination -5V power supply；The chip U2 is variable gain amplifier chip, and model is AD8367；
The structure of the phase-comparison circuit 20 is one end of capacitor C10 and the non-inverting input terminal and resistance of amplifier U5
One end of R13 is connected, and an input terminal of the other end of capacitor C10 as phase-comparison circuit 20 is denoted as port PHASE_
In1 is connected with the port ADAPT_out of adaptive amplitude normalizing circuit 19；The other end of resistance R13 is grounded；Amplifier U5 is just
Power supply termination+5V power supply, negative power end ground connection, reverse inter-input-ing ending grounding, the end CLK of output termination d type flip flop U6A；D type flip flop
The port D of U6A is grounded；The one end capacitor C11 ground connection, the end PR of another termination d type flip flop U6A；Resistance R14 mono- terminates d type flip flop
The end PR of U6A, the end Q of another termination d type flip flop U6A；CLR termination+5V the power supply of d type flip flop U6A, the Q of d type flip flop U6A are non-
Terminate the end PR of d type flip flop U8A；One end of capacitor C12 is connected with one end of the non-inverting input terminal of amplifier U7 and resistance R15, electricity
Hold another input terminal of the other end of C12 as phase-comparison circuit 20, port PHASE_in2 is denoted as, with controllable frequency source
23 port SineM_out is connected；The other end of resistance R15 is grounded；Positive supply termination+5V the power supply of amplifier U7, negative power end
Ground connection, reverse inter-input-ing ending grounding, the end CLK of output termination d type flip flop U6B；The port D of d type flip flop U6B is grounded；Capacitor C13 mono-
End ground connection, the end PR of another termination d type flip flop U6B；Resistance R16 mono- terminates the end PR of d type flip flop U6B, another termination d type flip flop
The end Q of U6B；CLR termination+5V the power supply of d type flip flop U6B, the end CLR of the Q non-terminated d type flip flop U8A of d type flip flop U6B；D touching
The end D and the end CLK for sending out device U8A are grounded, and output end of the end Q as phase-comparison circuit 20 is denoted as port PHASE_out, with
Single-chip microcontroller 21 is connected；
The structure of the reference voltage circuit 25 is a termination+5V power supply of resistance R27, another termination amplifier U13's
Non-inverting input terminal, the plus earth of zener diode D3, cathode connect amplifier U13 non-inverting input terminal, the inverting input terminal of amplifier U13
It is connected with output end, positive supply termination+5V power supply, negative power end ground connection, output end is+2.5V power supply ,+the 2.5V in each module
Power supply is provided by the output end；A termination+2.5V power supply of slide rheostat W4, other end ground connection, sliding termination amplifier U14
Non-inverting input terminal；The anti-phase input of amplifier U14 terminates its output end, and positive supply termination+5V power supply, negative power end is grounded, defeated
Output end of the outlet as reference voltage circuit 25, is denoted as port Vref, the reference voltage with adaptive amplitude normalizing circuit 19
Input terminal is connected；
The structure in the controllable frequency source 23 is a termination+12V power supply of slide rheostat W5, the other end and sliding
Terminate the base stage of triode Q2；The base stage of a termination triode Q2 of capacitor C16, other end ground connection；A termination three of resistance R28
The base stage of pole pipe Q2, other end ground connection；A termination+12V power supply of resistance R29, the collector of another termination triode Q2；Resistance
The emitter of a termination triode Q2 of R30, other end ground connection；The emitter of a termination triode Q2 of capacitor C17, the other end
Connect the collector of triode Q2；The emitter of a termination triode Q2 of capacitor C18, other end ground connection；The current collection of triode Q2
Output end of the pole as controllable frequency source 23, is denoted as port SineM_out, the port PHASE_in2 with phase-comparison circuit 20
And the input terminal of driver circuit for piezoelectric ceramics 24 is connected；The collector of a termination triode Q2 of capacitor C19, the other end and capacitor
One end of C20 and one end of inductance L1 are connected, another termination varactor D4 cathode of capacitor C20, varactor D4's
Plus earth, the other end ground connection of inductance L1；One end of capacitor C21 is grounded, input terminal of the other end as controllable frequency source 23,
It is denoted as port SineM_in；One end of resistance R31 is connected with port SineM_in, the cathode phase of the other end and varactor
Even.
The preferred 980nm laser light source of pump light source 10.
First photo-coupler 11 and the preferred splitting ratio of the second photo-coupler 12 is 10：90 1 × 2 photo-coupler.
The preferred splitting ratio of third photo-coupler 13 is 50：50 2 × 2 photo-couplers.
The temperature-control circuit 22 is the prior art, and specific structure can be found in this seminar Shen on July 27th, 2007
Patent of invention " high-stability thermostatic controller " (application number please：2007100559129).
The driver circuit for piezoelectric ceramics 24 is the prior art, and specific structure can be found in this seminar July 11 in 2007
Patent of invention filed in day " driver circuit for piezoelectric ceramics adjusted for fiber stress " (application number：2007100558658).
The photoelectric conversion circuit 17 is the prior art, is the circuit that can convert optical signals into electric signal.
Beneficial effect：
1, invention introduces the center wavelength tuning devices that can actively adjust, can be right when environmental condition changes
Compensating action is played in the offset of central wavelength caused by environment, effectively increases the sufficient center wavelength accuracy of the soliton of system output
Degree.
2, this invention takes adaptive amplitude normalizing circuits, and the output signal of functional transformation circuit is carried out amplitude normalizing
Change, provides the signal of high quality for subsequent phase-comparison circuit, improve the accuracy of phase-comparison circuit.
Detailed description of the invention：
Fig. 1 is overall structure block diagram of the invention.
Fig. 2 is the center wavelength tuning apparatus structure block diagram that the present invention uses.
Fig. 3 is the functional transformation circuit theory circuit diagram that the present invention uses.
Fig. 4 is the basic circuit diagram for the adaptive amplitude normalizing circuit that the present invention uses.
Fig. 5 is the basic circuit diagram for the phase-comparison circuit that the present invention uses.
Fig. 6 is reference voltage circuit figure of the invention.
Fig. 7 is the basic circuit diagram in the controllable frequency source that the present invention uses.
Specific embodiment
The working principle of the invention is further illustrated with reference to the accompanying drawing, it should be appreciated that the component marked in attached drawing
Parameter is the preferred parameter that following embodiment uses, rather than limiting of its scope.
The overall structure of the invention of embodiment 1
As shown in Figure 1, overall structure of the invention has, (the HFPC-11- of OZ-OPTICS company production of Polarization Controller 1
1064-S-9/125-3U complete optical fiber polarization controller) input terminal and the first photo-coupler 11 (OZ-OPTICS company produces, type
Number be FUSED-12-1064-7/125-90/10-3U-3mm, splitting ratio 90:10) 90% output end is connected, Polarization Control
(the model MFOS-12-9/125-S-1060-3U's of OZ-OPTICS company production is complete with 1 × N photoswitch 2 for the output end of device 1
Fiber-optical switch) public input terminal be connected, it is different that N number of output end of 1 × N photoswitch 2 passes through the N item in optical fiber group 3 respectively
Single mode optical fiber (the SM1500 type general single mode fiber of FIBERCORE company) and (the OZ-OPTICS company of 1 × N photo-coupler 4
The fiber coupler of the model FUSED-12-1060-7/125-50/50-3U-3mm of production) N number of input terminal be connected, it is described
Optical fiber group 3 be to be made of the different general single mode fiber of N length, N is 2~8 integer, the public affairs of 1 × N photo-coupler 4
Output end is connected with one end of black phosphorus saturable absorber 5 (saturable absorber made of black phosphorus material) altogether, and black phosphorus can satisfy
Be connected with the other end of absorber 5 with the input terminal of center wavelength tuning device 6, the output end of center wavelength tuning device 6 with
The input terminal of optoisolator 7 (THORLABS company IO-H-1064B single mode optoisolator) is connected, and the output end of optoisolator 7 is logical
Cross Er-doped fiber 8 (the SM-ESF-7/125 Er-doped fiber of Nufern company of U.S. production) and 9 (COMCORE of light wavelength division multiplexing
Company 980/1550nm single mode optical fiber wavelength division multiplexer) common end be connected, the end 980nm of light wavelength division multiplexing 9 and pump light
(the LC962U type pumping source of OCLARO company, central wavelength 980nm, maximum single-mode output optical power are defeated for 750mW's) in source 10
Outlet is connected, and the end 1550nm of light wavelength division multiplexing 9 is connected with the input terminal of the first photo-coupler 11；First photo-coupler 11
10% output end is connected with the input terminal of the second photo-coupler 12, the second photo-coupler 12 (production of OZ-OPTICS company, model
For FUSED-12-1064-7/125-90/10-3U-3mm, splitting ratio 90:10) 10% output end is as of the invention final
Output, 90% output end of the second photo-coupler 12 are connected with an input terminal of third photo-coupler 13, third photo-coupler
13 (1 × 2 standard single mode photo-coupler, splitting ratios 50：50) an output end and the second faraday rotation mirror 16
The MFI-1310 of production (THORLABS company) is connected, and the another output of third photo-coupler 13 and is wrapped in piezoelectric ceramics
One end of optical fiber on 14 (cylindrical piezoelectric ceramics, outer diameter 50mm, internal diameter 40mm, high 50mm) is connected, on piezoelectric ceramics 14
The other end of optical fiber is connected with the input terminal of the first faraday rotation mirror 15 (MFI-1310 of THORLABS company production), photoelectricity
The input terminal of conversion circuit 17 is connected with another input terminal of third photo-coupler 13, the output end of photoelectric conversion circuit 17 with
The input terminal of functional transformation circuit 18 is connected, the signal of the output end of functional transformation circuit 18 and adaptive amplitude normalizing circuit 19
Input terminal is connected, and the signal output end of adaptive amplitude normalizing circuit 19 is connected with an input terminal of phase-comparison circuit 20,
The output end of reference voltage circuit 25 is connected with the reference voltage input terminal of adaptive amplitude normalizing circuit 19, and adaptive amplitude is returned
The output end of one circuit 19 is connected with an input terminal of phase-comparison circuit 20, the output end and monolithic of phase-comparison circuit 20
Machine 21 (STC89C51) is connected, and single-chip microcontroller 21 is connected with the input control end in controllable frequency source 23, the sine in controllable frequency source 23
Signal output end is connected with another input terminal of phase-comparison circuit 20, also with 24 (this seminar of driver circuit for piezoelectric ceramics
Homemade device, specific structure are shown in patent ZL200710055865.8) input terminal be connected, driver circuit for piezoelectric ceramics 24 it is defeated
Outlet is connected with the control terminal of piezoelectric ceramics 14, and single-chip microcontroller 21 is connected with the temperature setting end of temperature-control circuit 22, temperature control
The current output terminal of circuit 22 processed is connected with the semiconductor heat electric refrigerator 64 in center wavelength tuning device 6, temperature control electricity
The thermistor input terminal on road 22 is connected with the thermistor 63 of center wavelength tuning device 6.
2 center wavelength tuning device of embodiment
As shown in Fig. 2, the structure of the center wavelength tuning device 6 is, lower surface and cooling fin 65 in aluminium block 61
Upper surface between accompany semiconductor heat electric refrigerator 64 (TEC12705)；Thermistor 63 (25 ° of 10k Ω@) and Prague light
Grid 62 (JH-FGA-A101) are attached to the upper surface of aluminium block 61；The thermistor of thermistor 63 and temperature-control circuit 22 inputs
End is connected；Semiconductor heat electric refrigerator 64 is connected with the current output terminal of temperature-control circuit 22；One end of Bragg grating 62
It is connected with the second port of the optical circulator 66 PIOC3-15 optical circulator of production (THORLABS company), the of optical circulator 66
The input terminal of wave length tuning device 6 centered on Single port is connected with the black phosphorus saturable absorber 5, optical circulator 66
Third port centered on the output end of wave length tuning device 6 be connected with the input terminal of the optoisolator 7.When system is examined
When measuring the soliton central wavelength of output and changing, can reversely it be adjusted by center wavelength tuning device 6, Jin Erwen
Surely the central wavelength of soliton is exported.
3 functional transformation circuit of embodiment
The structure of the functional transformation circuit 18 is, one end of capacitor C3 and the pin 12 of trigonometric function converter U1 and
One end of resistance R2 is connected, and input terminal of the other end of capacitor C3 as functional transformation circuit 20 is denoted as port ACOS_in, with
The output end of photoelectric conversion circuit 17 is connected；The other end of resistance R2 is grounded；The pin 2 of trigonometric function converter U1,3,4,5,
8,11,13 ground connection, pin 9,10 are connected with one end of capacitor C2 and -12V power supply, the other end ground connection of capacitor C2；Trigonometric function
The pin 6 of converter U1 is connected with pin 7, and pin 16 is connected with one end of+12V power supply and capacitor C1, the other end of capacitor C1
Ground connection；The pin 1 of trigonometric function converter U1 is connected with the sliding end of slide rheostat W1, one end of slide rheostat W1 and electricity
The one end for hindering R1 is connected, and the other end of resistance R1 is connected with the pin 14 of trigonometric function converter U1, the cunning of slide rheostat W1
Output end of the moved end as functional transformation circuit 18, is denoted as port ACOS_out, the signal with adaptive amplitude normalizing circuit 19
Input terminal is connected；The model AD639 of the trigonometric function converter U1.The circuit has the function of anti-cosine transform, to light
The signal that power conversion circuit 17 exports carries out anticosine processing.
The adaptive amplitude normalizing circuit of embodiment 4
Since the signal amplitude that the functional transformation circuit 18 described at different conditions exports is also different, when it is big when it is small, because
This is handled in order to facilitate phase-comparison circuit 20, improves the precision of phase bit comparison, and adaptive amplitude has also been devised in the present invention
Normalizing circuit 19, specific structure as shown in figure 4, one end of capacitor C1 is connected with the pin 3 of one end of resistance R21 and chip U2,
The other end of resistance R21 is grounded, and signal input part of the other end of capacitor C1 as adaptive amplitude normalizing circuit 19 is denoted as end
The port ACOS_out of mouth ADAPT_in, and function translation circuit 18 are connected；Pin 1, pin 7, the pin 8, pin of chip U2
14 are grounded, and pin 2 is connected with+5V power supply with pin 4, pin 11 be connected with pin 12 and with one end of capacitor C5 and+5V
Power supply is connected, the other end ground connection of capacitor C5；The pin 13 of chip U2 is connected with one end of capacitor C4, another termination of capacitor C4
Ground；The pin 9 of chip U2 is connected with one end of capacitor C6, the other end ground connection of capacitor C6；The pin 5 and resistance R20 of chip U2
And one end of resistance R19 is connected, the other end ground connection of resistance R20, the other end of resistance R19 and the output end and resistance of amplifier U8
One end of R17 is connected, and the positive power source terminal 7 of amplifier U8 connects+5V power supply, negative power end ground connection；The other end and resistance of resistance R17
One end of R15 and one end of resistance R16 are connected, and are connected to the inverting input terminal of amplifier U8；The non-inverting input terminal and electricity of amplifier U8
The one end for hindering R18 is connected, and the other end of resistance R18 is connected with+2.5V power supply；The other end of resistance R15 and one end of capacitor C10
It is connected, and is connected to the output end of amplifier U7；Positive supply termination+5V the power supply of amplifier U7, negative power end ground connection；Capacitor C10's is another
One end is connected with one end of slide rheostat W3 and sliding end, and is connected to the inverting input terminal of amplifier U7；Amplifier U7's is same mutually defeated
Enter end to be connected with one end of resistance R14, the other end of resistance R14 is connected with+2.5V power supply；The other end of slide rheostat W3 with
One end of resistance R13 is connected；The other end of resistance R16 is connected with the output end of the sliding end of slide rheostat W2 and amplifier U6,
One end of slide rheostat W2 is connected with one end of resistance R11；The other end of resistance R11 is connected with one end of resistance R10, and connects
To the inverting input terminal of amplifier U6；Positive supply termination+5V the power supply of amplifier U6, negative power end ground connection；The homophase input of amplifier U6
End is connected with one end of resistance R12, and the other end of resistance R12 is connected with+2.5V power supply；The other end and resistance R13 of resistance R10
The other end and one end of resistance R7 be connected, and be connected to the output end of amplifier U5；The other end of resistance R7 and one end of resistance R6
It is connected, and is connected to the inverting input terminal of amplifier U5；The output end of another termination amplifier U4 of resistance R6, the positive power source terminal of amplifier U5
Connect+5V power supply, negative power end ground connection；One end of resistance R8 is connected with one end of resistance R9, and is connected to the homophase input of amplifier U5
End, the other end of resistance R9 are connected with+2.5V power supply；Reference of the other end of resistance R8 as adaptive amplitude normalizing circuit 19
Voltage input end is connected with the reference voltage output terminal of reference voltage circuit 25；The pin 10 of chip U2 is used as adaptive amplitude
The signal output end of normalizing circuit 19 is denoted as port ADAPT_out, is connected with an input terminal of phase-comparison circuit 20；Core
The pin 10 of piece U2 is connected with one end of capacitor C7, and the other end of capacitor C7 and one end of resistance R22 and amplifier U3's is same mutually defeated
Enter end to be connected, the other end ground connection of resistance R22；One end of resistance R3 is connected with the anode of one end of capacitor C8 and diode D1,
And it is connected to the inverting input terminal of amplifier U3, the substrate (i.e. pin 8) of amplifier U3 is connected to the inverting input terminal of amplifier U3；Amplifier U3's
Positive supply termination+5V power supply, negative supply termination -5V power supply；The other end of capacitor C8 and the cathode of diode D1 and diode D2
Anode be connected, and be connected to the output end of amplifier U3；The other end of resistance R3 and one end of resistance R4 and the reverse phase of amplifier U4 are defeated
Enter end to be connected, the other end of resistance R4 is connected with the grid of the cathode of diode D2 and field-effect tube Q1 (2N4117), field-effect
The source electrode of pipe Q1 is connected with one end of one end of capacitor C9 and resistance R5, and the other end of capacitor C9 is connected with the other end of resistance R5
And it is grounded；The source electrode of field-effect tube Q1 is connected with the drain electrode of field-effect tube Q1, and is connected to the non-inverting input terminal of amplifier U4；Amplifier U4
Inverting input terminal be connected with the output end of the substrate of amplifier U4 and amplifier U4；Positive supply termination+5V the power supply of amplifier U3, negative electricity
Source connects -5V power supply；The chip U2 is variable gain amplifier chip, and model is AD8367.The circuit is by functional transformation
The signal amplitude that circuit 18 exports is unified into moderate size (frequency, phase invariant), to be suitble to phase-comparison circuit 20 to handle, mentions
The precision that high phase compares.
5 phase-comparison circuit of embodiment
The structure of the phase-comparison circuit 20 is one end of capacitor C10 and the non-inverting input terminal and resistance of amplifier U5
One end of R13 is connected, and an input terminal of the other end of capacitor C10 as phase-comparison circuit 20 is denoted as port PHASE_
In1 is connected with the port ADAPT_out of adaptive amplitude normalizing circuit 19；The other end of resistance R13 is grounded；Amplifier U5 is just
Power supply termination+5V power supply, negative power end ground connection, reverse inter-input-ing ending grounding, the end CLK of output termination d type flip flop U6A；D type flip flop
The port D of U6A is grounded；The one end capacitor C11 ground connection, the end PR of another termination d type flip flop U6A；Resistance R14 mono- terminates d type flip flop
The end PR of U6A, the end Q of another termination d type flip flop U6A；CLR termination+5V the power supply of d type flip flop U6A, the Q of d type flip flop U6A are non-
Terminate the end PR of d type flip flop U8A；One end of capacitor C12 is connected with one end of the non-inverting input terminal of amplifier U7 and resistance R15, electricity
Hold another input terminal of the other end of C12 as phase-comparison circuit 20, port PHASE_in2 is denoted as, with controllable frequency source
23 port SineM_out is connected；The other end of resistance R15 is grounded；Positive supply termination+5V the power supply of amplifier U7, negative power end
Ground connection, reverse inter-input-ing ending grounding, the end CLK of output termination d type flip flop U6B；The port D of d type flip flop U6B is grounded；Capacitor C13 mono-
End ground connection, the end PR of another termination d type flip flop U6B；Resistance R16 mono- terminates the end PR of d type flip flop U6B, another termination d type flip flop
The end Q of U6B；CLR termination+5V the power supply of d type flip flop U6B, the end CLR of the Q non-terminated d type flip flop U8A of d type flip flop U6B；D touching
The end D and the end CLK for sending out device U8A are grounded, and output end of the end Q as phase-comparison circuit 20 is denoted as port PHASE_out, with
Single-chip microcontroller 21 is connected；The circuit exports the standard sine wave that controllable frequency source 23 exports and adaptive amplitude normalizing circuit 19
Sine wave carries out phase bit comparison, and comparison result is to single-chip microcontroller.
6 reference voltage circuit of embodiment
The structure of the reference voltage circuit 25 is a termination+5V power supply of resistance R27, another termination amplifier U13's
Non-inverting input terminal, the plus earth of zener diode D3, cathode connect amplifier U13 non-inverting input terminal, the inverting input terminal of amplifier U13
It is connected with output end, positive supply termination+5V power supply, negative power end ground connection, output end is+2.5V power supply, adaptive amplitude normalizing
+ 2.5V power supply in circuit 19 is provided by the output end；A termination+2.5V power supply of slide rheostat W4, other end ground connection are sliding
Moved end connects the non-inverting input terminal of amplifier U14；The anti-phase input of amplifier U14 terminates its output end, and positive supply termination+5V power supply is born
Power end ground connection, output end of the output end as reference voltage circuit 25 is denoted as port Vref, with adaptive amplitude normalizing circuit
19 reference voltage input terminal is connected；The circuit is that adaptive amplitude normalizing circuit 19 provides reference voltage and+2.5V voltage.
7 controllable frequency source of embodiment
The structure in the controllable frequency source 23 is a termination+12V power supply of slide rheostat W5, the other end and sliding
Terminate the base stage of triode Q2；The base stage of a termination triode Q2 of capacitor C16, other end ground connection；A termination three of resistance R28
The base stage of pole pipe Q2, other end ground connection；A termination+12V power supply of resistance R29, the collector of another termination triode Q2；Resistance
The emitter of a termination triode Q2 of R30, other end ground connection；The emitter of a termination triode Q2 of capacitor C17, the other end
Connect the collector of triode Q2；The emitter of a termination triode Q2 of capacitor C18, other end ground connection；The current collection of triode Q2
Output end of the pole as controllable frequency source 23, is denoted as port SineM_out, the port PHASE_in2 with phase-comparison circuit 20
And the input terminal of driver circuit for piezoelectric ceramics 24 is connected；The collector of a termination triode Q2 of capacitor C19, the other end and capacitor
One end of C20 and one end of inductance L1 are connected, another termination varactor D4 cathode of capacitor C20, varactor D4's
Plus earth, the other end ground connection of inductance L1；One end of capacitor C21 is grounded, input terminal of the other end as controllable frequency source 23,
It is denoted as port SineM_in；One end of resistance R31 is connected with port SineM_in, the cathode phase of the other end and varactor
Even.The adjustable standard sine wave of module output frequency provides required modulated signal for driver circuit for piezoelectric ceramics 24, simultaneously
Reference phase reference is provided for phase-comparison circuit 20.
8 the working principle of the invention of embodiment
In conjunction with the various embodiments described above and each attached drawing, illustrate the working principle of the invention.
In entire block diagram shown in Fig. 1, by Polarization Controller 1,1 × N photoswitch 2,3~the first photo-coupler of optical fiber group
11 are configured to generate the fundamental resonance chamber of soliton, when by 1 × N photoswitch 2 and 1 × N photo-coupler 4 from optical fiber group 3
When selecting the optical fiber of different length, resonant cavity can generate different types of soliton, and generated a part of signal of soliton is logical
The second photo-coupler 12 is crossed to enter by third photo-coupler 13, piezoelectric ceramics 14,24, first farads of driver circuit for piezoelectric ceramics
The Michelson's interferometer that revolving mirror 15, the second faraday rotation mirror 16 are constituted is interfered, while controllable frequency source 23 is
Michelson's interferometer provides a control signal sin (ω t), and the signal is in interferometer by the shadow of soliton central wavelength
It rings, then is converted into electric signal through photoelectric conversion circuit 17 and sin (ω is obtained by the anti-cosine transform of functional transformation circuit 18 later
T+ Δ θ), which is adjusted to a fixed size by adaptive 19 amplitude of amplitude normalizing circuit, signal at this time
Compared with controllable frequency source 23 generates sinusoidal signal sin (ω t), phase is changed, by phase-comparison circuit 20 by two
The phase difference detection of person comes out and is sent into single-chip microcontroller 21, the central wavelength of phase difference soliton as caused by fundamental resonance chamber
It is determined, when single-chip microcontroller 21 detects central wavelength and preset central wavelength changes, can be controlled by temperature
The temperature of the Bragg grating in central wavelength tuner 6 is adjusted in circuit 22, to adversely affect in fundamental resonance chamber
The central wavelength of soliton, and then realize the purpose for stablizing central wavelength, final soliton signal is from the second photo-coupler 12
10% output end exported.
Claims (3)
1. a kind of soliton generation system based on black phosphorus saturable absorber, structure have, the output end of optoisolator (7) is logical
It crosses Er-doped fiber (8) to be connected with the common end of light wavelength division multiplexing (9), the end 980nm of light wavelength division multiplexing (9) and pump light source
(10) output end is connected, and the end 1550nm of light wavelength division multiplexing (9) is connected with the input terminal of the first photo-coupler (11), and first
90% output end of photo-coupler (11) is connected with the input terminal of Polarization Controller (1), the output end and 1 of Polarization Controller (1)
The public input terminal of × N photoswitch (2) is connected, and N number of output end of 1 × N photoswitch (2) passes through the N item in optical fiber group (3) respectively
Different single mode optical fibers is connected with N number of input terminal of 1 × N photo-coupler (4), and the optical fiber group (3) is by N length difference
Single mode optical fiber constitute, N is 2~8 integer, the public output and black phosphorus saturable absorber of 1 × N photo-coupler (4)
(5) one end is connected；
It is characterized in that, structure in addition, the other end and the center wavelength tuning device (6) of black phosphorus saturable absorber (5) it is defeated
Enter end to be connected, the output end of center wavelength tuning device (6) is connected with the input terminal of optoisolator (7), the first photo-coupler
(11) 10% output end is connected with the input terminal of the second photo-coupler (12), and 10% output end of the second photo-coupler (12) is made
For final output of the invention, 90% output end of the second photo-coupler (12) and an input terminal of third photo-coupler (13)
It is connected, an output end of third photo-coupler (13) is connected with the second faraday rotation mirror (16), third photo-coupler (13)
Another output be connected with the one end for the optical fiber being wrapped on piezoelectric ceramics (14), the optical fiber on piezoelectric ceramics (14) it is another
One end is connected with the input terminal of the first faraday rotation mirror (15), the input terminal and third photo-coupler of photoelectric conversion circuit (17)
(13) another input terminal is connected, the input terminal phase of the output end and function translation circuit (18) of photoelectric conversion circuit (17)
Even, the output end of functional transformation circuit (18) is connected with the signal input part of adaptive amplitude normalizing circuit (19), adaptive width
The signal output end of degree normalizing circuit (19) is connected with an input terminal of phase-comparison circuit (20), reference voltage circuit (25)
Output end be connected with the reference voltage input terminal of adaptive amplitude normalizing circuit (19), adaptive amplitude normalizing circuit (19)
Output end is connected with an input terminal of phase-comparison circuit (20), the output end of phase-comparison circuit (20) and single-chip microcontroller (21)
It is connected, single-chip microcontroller (21) is connected with the input control end of controllable frequency source (23), the sinusoidal signal output of controllable frequency source (23)
End is connected with another input terminal of phase-comparison circuit (20), is also connected with the input terminal of driver circuit for piezoelectric ceramics (24),
The output end of driver circuit for piezoelectric ceramics (24) is connected with the control terminal of piezoelectric ceramics (14), single-chip microcontroller (21) and temperature control electricity
The temperature setting end on road (22) is connected, in the current output terminal of temperature-control circuit (22) and center wavelength tuning device (6)
Semiconductor heat electric refrigerator (64) is connected, the thermistor input terminal and center wavelength tuning device of temperature-control circuit (22)
(6) thermistor (63) is connected；
The structure of the center wavelength tuning device (6) is, in the lower surface of aluminium block (61) and the upper surface of cooling fin (65)
Between accompany semiconductor heat electric refrigerator (64)；Thermistor (63) and Bragg grating (62) are attached to the upper table of aluminium block (61)
Face；Thermistor (63) is connected with the thermistor input terminal of temperature-control circuit (22)；Semiconductor heat electric refrigerator (64) with
The current output terminal of temperature-control circuit (22) is connected；One end of Bragg grating (62) and the second port of optical circulator (66)
It is connected, the input terminal of wave length tuning device (6) centered on the first port of optical circulator (66), with the saturable absorption
Body (5) is connected, the output end of wave length tuning device (6) and the optical isolation centered on the third port of optical circulator (66)
The input terminal of device (7) is connected；
The structure of the functional transformation circuit (18) is one end of capacitor C3 and the pin 12 and electricity of trigonometric function converter U1
The one end for hindering R2 is connected, and input terminal of the other end of capacitor C3 as functional transformation circuit (20) is denoted as port ACOS_in, with
The output end of photoelectric conversion circuit (17) is connected；The other end of resistance R2 is grounded；The pin 2 of trigonometric function converter U1,3,4,
5,8,11,13 ground connection, pin 9,10 are connected with one end of capacitor C2 and -12V power supply, the other end ground connection of capacitor C2；Triangle letter
The pin 6 of number converter U1 is connected with pin 7, and pin 16 is connected with one end of+12V power supply and capacitor C1, and capacitor C1's is another
End ground connection；The pin 1 of trigonometric function converter U1 is connected with the sliding end of slide rheostat W1, one end of slide rheostat W1 with
One end of resistance R1 is connected, and the other end of resistance R1 is connected with the pin 14 of trigonometric function converter U1, slide rheostat W1's
Output end of the sliding end as functional transformation circuit (18), is denoted as port ACOS_out, with adaptive amplitude normalizing circuit (19)
Signal input part be connected；The model AD639 of the trigonometric function converter U1；
The structure of the adaptive amplitude normalizing circuit (19) is one end of capacitor C1 and one end of resistance R21 and chip U2
Pin 3 be connected, the other end of resistance R21 ground connection, letter of the other end of capacitor C1 as adaptive amplitude normalizing circuit (19)
Number input terminal, is denoted as port ADAPT_in, and the port ACOS_out of and function translation circuit (18) is connected；The pin 1 of chip U2,
Pin 7, pin 8, pin 14 are grounded, and pin 2 is connected with+5V power supply with pin 4, pin 11 be connected with pin 12 and with electricity
The one end and+5V power supply for holding C5 are connected, the other end ground connection of capacitor C5；The pin 13 of chip U2 is connected with one end of capacitor C4,
The other end of capacitor C4 is grounded；The pin 9 of chip U2 is connected with one end of capacitor C6, the other end ground connection of capacitor C6；Chip U2
Pin 5 be connected with one end of resistance R20 and resistance R19, the other end of resistance R20 ground connection, the other end and amplifier of resistance R19
The output end of U8 and one end of resistance R17 are connected, and the positive power source terminal 7 of amplifier U8 connects+5V power supply, negative power end ground connection；Resistance R17
The other end be connected with one end of one end of resistance R15 and resistance R16, and be connected to the inverting input terminal of amplifier U8；Amplifier U8's
Non-inverting input terminal is connected with one end of resistance R18, and the other end of resistance R18 is connected with+2.5V power supply；The other end of resistance R15
It is connected with one end of capacitor C10, and is connected to the output end of amplifier U7；Positive supply termination+5V the power supply of amplifier U7, negative supply termination
Ground；The other end of capacitor C10 is connected with one end of slide rheostat W3 and sliding end, and is connected to the inverting input terminal of amplifier U7；
The non-inverting input terminal of amplifier U7 is connected with one end of resistance R14, and the other end of resistance R14 is connected with+2.5V power supply；Slide variable resistance
The other end of device W3 is connected with one end of resistance R13；The other end of resistance R16 and the sliding end of slide rheostat W2 and amplifier U6
Output end be connected, one end of slide rheostat W2 is connected with one end of resistance R11；The other end of resistance R11 is with resistance R10's
One end is connected, and is connected to the inverting input terminal of amplifier U6；Positive supply termination+5V the power supply of amplifier U6, negative power end ground connection；Amplifier
The non-inverting input terminal of U6 is connected with one end of resistance R12, and the other end of resistance R12 is connected with+2.5V power supply；Resistance R10's is another
One end is connected with one end of the other end of resistance R13 and resistance R7, and is connected to the output end of amplifier U5；The other end of resistance R7 with
One end of resistance R6 is connected, and is connected to the inverting input terminal of amplifier U5；The output end of another termination amplifier U4 of resistance R6, amplifier
Positive supply termination+5V the power supply of U5, negative power end ground connection；One end of resistance R8 is connected with one end of resistance R9, and is connected to amplifier
The other end of the non-inverting input terminal of U5, resistance R9 is connected with+2.5V power supply；The other end of resistance R8 is as adaptive amplitude normalizing
The reference voltage input terminal of circuit (19) is connected with the reference voltage output terminal of reference voltage circuit (25)；The pin of chip U2
10 signal output end as adaptive amplitude normalizing circuit (19) is denoted as port ADAPT_out, with phase-comparison circuit (20)
An input terminal be connected；The pin 10 of chip U2 is connected with one end of capacitor C7, the other end of capacitor C7 and the one of resistance R22
The non-inverting input terminal of end and amplifier U3 are connected, the other end ground connection of resistance R22；One end of resistance R3 and one end and two of capacitor C8
The anode of pole pipe D1 is connected, and is connected to the inverting input terminal of amplifier U3, and the substrate of amplifier U3 is connected to the inverting input terminal of amplifier U3；
Positive supply termination+5V the power supply of amplifier U3, negative supply termination -5V power supply；The other end of capacitor C8 and the cathode of diode D1 and
The anode of diode D2 is connected, and is connected to the output end of amplifier U3；The other end of resistance R3 and one end of resistance R4 and amplifier U4
Inverting input terminal be connected, the other end of resistance R4 is connected with the grid of the cathode of diode D2 and field-effect tube Q1, field-effect
The source electrode of pipe Q1 is connected with one end of one end of capacitor C9 and resistance R5, and the other end of capacitor C9 is connected with the other end of resistance R5
And it is grounded；The source electrode of field-effect tube Q1 is connected with the drain electrode of field-effect tube Q1, and is connected to the non-inverting input terminal of amplifier U4；Amplifier U4
Inverting input terminal be connected with the output end of the substrate of amplifier U4 and amplifier U4；Positive supply termination+5V the power supply of amplifier U3, negative electricity
Source connects -5V power supply；The chip U2 is variable gain amplifier chip, and model is AD8367；
The structure of the phase-comparison circuit (20) is one end of capacitor C10 and the non-inverting input terminal of amplifier U5 and resistance R13
One end be connected, an input terminal of the other end of capacitor C10 as phase-comparison circuit (20) is denoted as port PHASE_in1,
It is connected with the port ADAPT_out of adaptive amplitude normalizing circuit (19)；The other end of resistance R13 is grounded；The positive electricity of amplifier U5
Source connects+5V power supply, negative power end ground connection, reverse inter-input-ing ending grounding, the end CLK of output termination d type flip flop U6A；D type flip flop
The port D of U6A is grounded；The one end capacitor C11 ground connection, the end PR of another termination d type flip flop U6A；Resistance R14 mono- terminates d type flip flop
The end PR of U6A, the end Q of another termination d type flip flop U6A；CLR termination+5V the power supply of d type flip flop U6A, the Q of d type flip flop U6A are non-
Terminate the end PR of d type flip flop U8A；One end of capacitor C12 is connected with one end of the non-inverting input terminal of amplifier U7 and resistance R15, electricity
Hold another input terminal of the other end of C12 as phase-comparison circuit (20), port PHASE_in2 is denoted as, with controllable frequency
The port SineM_out in source (23) is connected；The other end of resistance R15 is grounded；Positive supply termination+5V the power supply of amplifier U7, negative electricity
Source ground connection, reverse inter-input-ing ending grounding, the end CLK of output termination d type flip flop U6B；The port D of d type flip flop U6B is grounded；Capacitor
The one end C13 ground connection, the end PR of another termination d type flip flop U6B；Resistance R16 mono- terminates the end PR of d type flip flop U6B, another termination D
The end Q of trigger U6B；CLR termination+5V the power supply of d type flip flop U6B, the CLR of the Q non-terminated d type flip flop U8A of d type flip flop U6B
End；The end D and the end CLK of d type flip flop U8A is grounded, and output end of the end Q as phase-comparison circuit (20) is denoted as port
PHASE_out is connected with single-chip microcontroller (21)；
The structure of the reference voltage circuit (25) is a termination+5V power supply of resistance R27, and another termination amplifier U13's is same
Phase input terminal, the plus earth of zener diode D3, cathode connect amplifier U13 non-inverting input terminal, the inverting input terminal of amplifier U13 with
Output end is connected, positive supply termination+5V power supply, and negative power end ground connection, output end is+2.5V power supply ,+2.5V the electricity in each module
Source is provided by the output end；A termination+2.5V power supply of slide rheostat W4, other end ground connection, sliding termination amplifier U14's
Non-inverting input terminal；The anti-phase input of amplifier U14 terminates its output end, positive supply termination+5V power supply, negative power end ground connection, output
The output end as reference voltage circuit (25) is held, port Vref is denoted as, the reference electricity with adaptive amplitude normalizing circuit (19)
Input terminal is pressed to be connected；
The structure in the controllable frequency source (23) is a termination+12V power supply of slide rheostat W5, the other end and sliding end
Connect the base stage of triode Q2；The base stage of a termination triode Q2 of capacitor C16, other end ground connection；Three poles of termination of resistance R28
The base stage of pipe Q2, other end ground connection；A termination+12V power supply of resistance R29, the collector of another termination triode Q2；Resistance
The emitter of a termination triode Q2 of R30, other end ground connection；The emitter of a termination triode Q2 of capacitor C17, the other end
Connect the collector of triode Q2；The emitter of a termination triode Q2 of capacitor C18, other end ground connection；The current collection of triode Q2
Output end of the pole as controllable frequency source (23), is denoted as port SineM_out, the port PHASE_ with phase-comparison circuit (20)
The input terminal of in2 and driver circuit for piezoelectric ceramics (24) is connected；The collector of a termination triode Q2 of capacitor C19, the other end
It is connected with one end of one end of capacitor C20 and inductance L1, another termination varactor D4 cathode of capacitor C20, two pole of transfiguration
The plus earth of pipe D4, the other end ground connection of inductance L1；One end of capacitor C21 is grounded, and the other end is as controllable frequency source (23)
Input terminal, be denoted as port SineM_in；One end of resistance R31 is connected with port SineM_in, the other end and varactor
Cathode be connected.
2. a kind of soliton generation system based on black phosphorus saturable absorber according to claim 1, which is characterized in that
The pump light source (10) is 980nm laser light source.
3. a kind of soliton generation system based on black phosphorus saturable absorber according to claim 1, which is characterized in that
(12 be all splitting ratio be 10 for first photo-coupler (11) and the second photo-coupler：90 1 × 2 photo-coupler；Described
Third photo-coupler (13) is that splitting ratio is 50：50 2 × 2 photo-couplers.
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