CN108879306A - A kind of soliton generation system based on ytterbium-doping optical fiber laser - Google Patents
A kind of soliton generation system based on ytterbium-doping optical fiber laser Download PDFInfo
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- CN108879306A CN108879306A CN201810888799.0A CN201810888799A CN108879306A CN 108879306 A CN108879306 A CN 108879306A CN 201810888799 A CN201810888799 A CN 201810888799A CN 108879306 A CN108879306 A CN 108879306A
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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
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06716—Fibre compositions or doping with active 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
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06725—Fibre characterized by a specific dispersion, e.g. for pulse shaping in soliton lasers or for dispersion compensating [DCF]
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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
- H01S3/06754—Fibre amplifiers
- H01S3/06783—Amplifying coupler
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- Engineering & Computer Science (AREA)
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- Semiconductor Lasers (AREA)
- Lasers (AREA)
Abstract
A kind of soliton generation system based on ytterbium-doping optical fiber laser of the invention belongs to photoelectronic device technical field.Its primary structure has 1 × N photoswitch (1), optical fiber group (2), 1 × N photo-coupler (3), saturable absorber (4), dispersion compensating fiber (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 ytterbium-doping optical fiber laser produces
Raw 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 that " one kind is by dispersion compensation light on June 7th, 2014 with the immediate prior art of the present invention
The multiple types soliton system that fibre group is constituted " (application No. is 2014102507523), the patent control color by photoswitch
The length for dissipating compensated optical fiber realizes the purpose that the same device generates different type soliton.But the patent and other generations
The unstable disadvantage of the equally generally existing central wavelength of the prior art of soliton.Therefore, the existing technology for generating soliton
It also needs further 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 ytterbium-doping optical fiber laser, structure have, and the output end of optoisolator 7 passes through
Yb dosed optical fiber 8 is connected with the common end of light wavelength division multiplexing 9, the end 980nm of light wavelength division multiplexing 9 and the output of pump light source 10
End be connected, the end 1060nm of light wavelength division multiplexing 9 is connected with one end of tunable optical filter 11, tunable optical filter 11 it is another
End is connected with the public input terminal of the first photo-coupler 12,90% output end of the first photo-coupler 12 and 1 × N photoswitch 1
Public input terminal be connected, N number of output end of 1 × N photoswitch 1 pass through respectively the different single mode optical fiber of the N item in optical fiber group 2 with
N number of input terminal of 1 × N photo-coupler 3 is connected, and the optical fiber group 2 is made of the different single mode optical fiber of N length, and N is
The public output of 2~8 integer, 1 × N photo-coupler 3 is connected with one end of saturable absorber 4, saturable absorber 4
The other end is connected with one end of dispersion compensating fiber 5, which is characterized in that structure in addition, the other end of dispersion compensating fiber 5 in
The input terminal of heart wave length tuning device 6 is connected, and the output end of center wavelength tuning device 6 is connected with the input terminal of optoisolator 7；
10% output end of the first photo-coupler 12 is connected with the input terminal of the second photo-coupler 13, and the 10% of the second photo-coupler 13 is defeated
Outlet is as final output of the invention, 90% output end and the 14 input terminal phase of third photo-coupler of the second photo-coupler 13
Even, an output end of third photo-coupler 14 is connected with an input terminal of the 4th photo-coupler 16, third photo-coupler 14
Another output be connected with the one end for the optical fiber being wrapped on piezoelectric ceramics 15, be wrapped in the optical fiber on piezoelectric ceramics 15
The other end is connected with another input terminal of the 4th photo-coupler 16, the output end and photoelectric conversion circuit of the 4th photo-coupler 16
17 input terminal is connected, and the input terminal of the output end and function translation circuit 18 of photoelectric conversion circuit 17 is connected, functional transformation electricity
The output end on road 18 is connected with the input terminal of adaptive amplitude normalizing circuit 19, the output end of adaptive amplitude normalizing circuit 19 with
One input terminal of phase-comparison circuit 20 is connected, and the output end of phase-comparison circuit 20 is connected with single-chip microcontroller 21, controllable frequency
The frequency output terminal in source 23 is connected with single-chip microcontroller 21, sinusoidal signal output end and the phase-comparison circuit 20 in controllable frequency source 23
Another input terminal is connected, and is also connected with the input terminal of driver circuit for piezoelectric ceramics 24, the output of driver circuit for piezoelectric ceramics 24
End is connected with the control terminal of piezoelectric ceramics 15, 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 is connected with the semiconductor heat electric refrigerator 64 in center wavelength tuning device 6, temperature-control circuit
22 thermistor input terminal is connected with the thermistor 63 of center wavelength tuning device 6；
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 dispersion compensating fiber 5 centered on mouthful, the third end 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 mouthful；
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 18 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 input with adaptive amplitude normalizing circuit 19
End 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 C9 and one end of resistance R3 and chip U2
Pin 3 be connected, the other end of resistance R3 ground connection, input of the other end of capacitor C9 as adaptive amplitude normalizing circuit 19
End, is denoted as port ADAPT_in, and the port ACOS_out of and function translation circuit 18 is connected；Pin 1, pin 7, the pipe of chip U2
Foot 8, pin 14 are grounded, and pin 2 is connected with+5V power supply with pin 4, and pin 11 is connected and one with capacitor C5 with pin 12
End 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, capacitor C4's
Other end ground connection；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 of chip U2 with
One end of resistance R12 and resistance R11 are connected, the other end ground connection of resistance R12, the output of the other end and amplifier U4 of resistance R11
End and one end of capacitor C8 are connected, the positive supply termination+5V power supply of amplifier U8, negative power end ground connection；The other end of capacitor C8 with
One end of resistance R10 is connected, and the other end of resistance R10 is connected with the non-inverting input terminal of amplifier U4；The inverting input terminal of amplifier U4
It is connected with the sliding end of sliding variohm W3, one end of slide rheostat W3 is connected with+5V power supply, and slide rheostat W3's is another
One end ground connection；One end of capacitor C7 is connected with the non-inverting input terminal of one end of resistance R9 and amplifier U4, another termination of capacitor C7
The other end on ground, resistance R9 is connected with the output end of one end of resistance R7 and amplifier U3, and the other end of resistance R7 is with amplifier U3's
Inverting input terminal is connected；One end of resistance R8 is connected with the non-inverting input terminal of amplifier U3, other end ground connection；The positive supply of amplifier U3
Termination+5V power supply, negative power end ground connection；Output end of the pin 10 of chip U2 as adaptive amplitude normalizing circuit 19, is denoted as
Port ADAPT_out is connected with an input terminal of phase-comparison circuit 20；The pin 10 of chip U2 and the anode of diode D1
It is connected, the cathode of diode D1 is connected with one end of resistance R4, the other end of resistance R4 and one end of resistance R5 and amplifier U3's
Inverting input terminal is connected, and the other end of resistance R5 is connected with the anode of diode D2, the cathode and slide rheostat of diode D2
The sliding end of W2 is connected；One end of slide rheostat W2 is connected and is grounded with the cathode of diode D3, and slide rheostat W2's is another
One end is connected with the anode of one end of resistance R6 and diode D3, another termination -5V power supply of resistance R6；The chip U2 is
Variable gain amplifier chip, model are 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 in the controllable frequency source 23 is the non-inverting input terminal of a termination amplifier U9 of resistance R22, another termination
Ground；The non-inverting input terminal of a termination amplifier U9 of capacitor C18, sinusoidal signal output end of the other end as controllable frequency source 23,
Be denoted as port SinM_out, be connected with the port PHASE_in2 of phase-comparison circuit 20, also with driver circuit for piezoelectric ceramics 24
Input terminal is connected；The inverting input terminal of a termination amplifier U9 of resistance R21, other end ground connection；Positive supply termination+the 5V of amplifier U9
Power supply, negative power end ground connection, frequency output terminal of the output end as controllable frequency source 23 are denoted as port FrqM_out, with monolithic
Machine 21 is connected；A termination+12V power supply of resistance R17, the base stage of another termination triode Q1；A termination+12V electricity of resistance R19
Source, the collector of another termination triode Q1；The base stage of a termination triode Q1 of capacitor C17, another termination electrolytic capacitor C16
Cathode；The anode of electrolytic capacitor C16 connects the emitter of triode Q1；The base stage of a termination triode Q1 of resistance R18, it is another
End ground connection；Resistance R20 mono- terminates the emitter of triode Q1, other end ground connection；The transmitting of a termination triode Q1 of capacitor C14
Pole, other end ground connection；The anode of electrolytic capacitor C15 connects the collector of triode Q1, and cathode connects the emitter of triode Q1；It is adjustable
The collector of a termination triode Q1 of inductance L1, the cathode of another termination electrolytic capacitor C16；The collector of triode Q1 connects end
Mouth SinM_out.
The preferred 980nm laser light source of pump light source 10.
First photo-coupler 12 and the preferred splitting ratio of the second photo-coupler 13 is 10：90 1 × 2 photo-coupler.
The third photo-coupler 14 and the preferred splitting ratio of the 4th photo-coupler 16 is 50：50 1 × 2 photo-coupler.
The temperature-control circuit 21 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 23 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 16 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 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 model of OZ-OPTICS company production of 1 × N photoswitch 1
The all -fiber photoswitch of MFOS-12-9/125-S-1060-3U) 12 (OZ-OPTICS of public input terminal and 1 × 2 photo-coupler
Company's production, model FUSED-12-1064-7/125-90/10-3U-3mm, splitting ratio 90:10) 90% output end phase
Even, N number of output end of 1 × N photoswitch 1 passes through the different single mode optical fibers and 1 × N photo-coupler 3 of the N item in optical fiber group 2 respectively
(OZ-OPTICS company production model FUSED-12-1060-7/125-50/50-3U-3mm fiber coupler) it is N number of
Input terminal is connected, and the optical fiber group 2 is that (the SM1500 type of FIBERCORE company is common by the different single mode optical fiber of N length
Single mode optical fiber) constitute, the public output and (the German BATOP company SA- of saturable absorber 4 of 1 × N photo-coupler 3
1064-25-2ps-FC/PC saturable absorber) one end be connected, the other end of saturable absorber 4 and dispersion compensating fiber 5
The one end of (the DCF38 dispersion compensating fiber of THORLABS company, 6 meters) is connected, the other end of dispersion compensating fiber 5 and middle cardiac wave
The input terminal of long tuner 6 is connected, the output end and (the THORLABS company IO- of optoisolator 7 of center wavelength tuning device 6
H-1064B single mode optoisolator) input terminal be connected, the output end of optoisolator 7 passes through (the FIBERCORE company of Yb dosed optical fiber 8
DF1100 Yb dosed optical fiber, 0.5 meter) and light wavelength division multiplexing 9 (COMCORE company 980/1060nm single mode optical fiber wavelength division multiplexer)
Common end be connected, the end 980nm of light wavelength division multiplexing 9 and pump light source 10 (the LC962U type pumping source of OCLARO company, in
The long 980nm of cardiac wave, maximum single-mode output optical power be 750mW) output end be connected, the end 1060nm of light wavelength division multiplexing 9 with
One end phase of tunable optical filter 11 (production of Micron Optics company, model FFP-TF-1060-010G0200-2.0)
Even, the public input terminal of the other end of tunable optical filter 11 and the first photo-coupler 12 is connected, the first photo-coupler 12
(OZ-OPTICS company produces, model FUSED-12-1064-7/125-90/10- for 10% output end and the second photo-coupler 13
3U-3mm, splitting ratio 90:10) input terminal is connected, and 10% output end of the second photo-coupler 13 is as of the invention final
Output, (1 × 2 standard single mode photo-coupler, splitting ratio are 90% output end of the second photo-coupler 13 with third photo-coupler 14
50：50) input terminal is connected, 16 (1 × 2 standard single mode optocoupler of an output end and the 4th photo-coupler of third photo-coupler 14
Clutch, splitting ratio 50：50) a input terminal is connected, and the another output of third photo-coupler 14 and is wrapped in piezoelectricity
One end of optical fiber on ceramics 15 (cylindrical piezoelectric ceramics, outer diameter 50mm, internal diameter 40mm, high 50mm) is connected, and is wrapped in piezoelectricity
The other end of optical fiber on ceramics 15 is connected with another input terminal of the 4th photo-coupler 16, the output of the 4th photo-coupler 16
End is connected with the input terminal of photoelectric conversion circuit 17, the input terminal of the output end and function translation circuit 18 of photoelectric conversion circuit 17
It is connected, the output end of functional transformation circuit 18 is connected with an input terminal of adaptive amplitude normalizing circuit 19, adaptive amplitude
The output end of normalizing circuit 19 is connected with an input terminal of phase-comparison circuit 20, the output end and list of phase-comparison circuit 20
Piece machine 21 (STC89C51) is connected, and the frequency output terminal in controllable frequency source 23 is connected with single-chip microcontroller 21, and controllable frequency source 23 is just
String signal output end is connected with another input terminal of phase-comparison circuit 20, also with 24 (this project of driver circuit for piezoelectric ceramics
The homemade device of group, specific structure are shown in patent ZL200710055865.8) input terminal be connected, driver circuit for piezoelectric ceramics 24
Output end is connected with the control terminal of piezoelectric ceramics 15, and single-chip microcontroller 21 is connected with temperature-control circuit 22, temperature-control circuit 22
Current output terminal is connected with the semiconductor heat electric refrigerator 64 in center wavelength tuning device 6, the temperature-sensitive of temperature-control circuit 22
Resistance input terminal is connected with the thermistor 63 of center wavelength tuning device 6.
2 center wavelength tuning device of embodiment
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 (TEC12705)；Thermistor 63 (25 ° of 10k Ω@) and 62 (JH- of Bragg grating
FGA-A101) it is attached to the upper surface of aluminium block 61；Thermistor 63 is connected with the thermistor input terminal of temperature-control circuit 22；Half
Conductor thermoelectric cooling module 64 is connected with the current output terminal of temperature-control circuit 22；One end of Bragg grating 62 and optical circulator
The second port of 66 (the products C IR1064 of THORLABS company) is connected, wavelength centered on the first port of optical circulator 66
The input terminal of tuner 6 is connected with the dispersion compensating fiber 5, wavelength centered on the third port of optical circulator 66
The output end of tuner 6 is connected with the input terminal of the optoisolator 7.When system detection to the soliton center of output
It when wavelength changes, can reversely be adjusted by center wavelength tuning device 6, and then stablize the middle cardiac wave of output soliton
It is long.
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 18 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 input with adaptive amplitude normalizing circuit 19
End is connected；The model AD639 of the trigonometric function converter U1.The circuit has the function of anti-cosine transform, turns to photoelectricity
The signal for changing the output of circuit 17 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 is as shown in figure 4, one end of capacitor C9 is connected with the pin 3 of one end of resistance R3 and chip U2, electricity
The other end ground connection of R3 is hindered, input terminal of the other end of capacitor C9 as adaptive amplitude normalizing circuit 19 is denoted as port
The port ACOS_out of ADAPT_in, and function translation circuit 18 are connected；Pin 1, pin 7, pin 8, the pin 14 of chip U2
Be grounded, 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 electricity
Source 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 R12 of chip U2
And one end of resistance R11 is connected, the other end ground connection of resistance R12, the other end of resistance R11 and the output end and capacitor of amplifier U4
One end of C8 is connected, the positive supply termination+5V power supply of amplifier U8, negative power end ground connection；The other end of capacitor C8 is with resistance R10's
One end is connected, and the other end of resistance R10 is connected with the non-inverting input terminal of amplifier U4；The inverting input terminal and sliding power transformation of amplifier U4
The sliding end for hindering device W3 is connected, and one end of slide rheostat W3 is connected with+5V power supply, the other end ground connection of slide rheostat W3；
One end of capacitor C7 is connected with the non-inverting input terminal of one end of resistance R9 and amplifier U4, the other end ground connection of capacitor C7, resistance R9
The other end be connected with the output end of one end of resistance R7 and amplifier U3, the inverting input terminal of the other end of resistance R7 and amplifier U3
It is connected；One end of resistance R8 is connected with the non-inverting input terminal of amplifier U3, other end ground connection；Positive supply termination+5V the electricity of amplifier U3
Source, negative power end ground connection；Output end of the pin 10 of chip U2 as adaptive amplitude normalizing circuit 19, is denoted as port ADAPT_
Out is connected with an input terminal of phase-comparison circuit 20；The pin 10 of chip U2 is connected with the anode of diode D1, two poles
The cathode of pipe D1 is connected with one end of resistance R4, the inverting input terminal of the other end of resistance R4 and one end of resistance R5 and amplifier U3
It is connected, the other end of resistance R5 is connected with the anode of diode D2, the cathode of diode D2 and the sliding end of slide rheostat W2
It is connected；One end of slide rheostat W2 is connected and is grounded with the cathode of diode D3, the other end and resistance of slide rheostat W2
One end of R6 and the anode of diode D3 are connected, another termination -5V power supply of resistance R6；The chip U2 is that variable gain is put
Big device chip, model is AD8367.The signal amplitude that functional transformation circuit 18 exports is unified into moderate size (frequency by the circuit
Rate, phase invariant), to be suitble to phase-comparison circuit 20 to handle, improve the precision of phase bit comparison.
5 phase-comparison circuit of embodiment
The structure of the phase-comparison circuit 20 is as shown in figure 5, one end of capacitor C10 and the non-inverting input terminal of amplifier U5
And one end of resistance R13 is connected, 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
Positive supply termination+5V the power supply of U5, negative power end ground connection, reverse inter-input-ing ending grounding, the end CLK of output termination d type flip flop U6A；D
The port D of trigger 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
The end PR of trigger U6A, the end Q of another termination d type flip flop U6A；CLR termination+5V the power supply of d type flip flop U6A, d type flip flop U6A
Q non-terminated d type flip flop U8A the end PR；One end of capacitor C12 and the non-inverting input terminal of amplifier U7 and one end phase of resistance R15
Even, another input terminal of the other end of capacitor C12 as phase-comparison circuit 20 is denoted as port PHASE_in2, with controllable frequency
The port SineM_out in rate 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 the input terminal of single-chip microcontroller 21.The circuit returns the standard sine wave that controllable frequency source 23 exports with adaptive amplitude
The sine wave of one circuit 19 output carries out phase bit comparison, and comparison result is to single-chip microcontroller.
6 controllable frequency source of embodiment
The structure in the controllable frequency source 23 as shown in fig. 6, a termination amplifier U9 of resistance R22 non-inverting input terminal,
Other end ground connection；The non-inverting input terminal of a termination amplifier U9 of capacitor C18, sinusoidal signal of the other end as controllable frequency source 23
Output end is denoted as port SinM_out, is connected with the port PHASE_in2 of phase-comparison circuit 20；A termination fortune of resistance R21
Put the inverting input terminal of U9, other end ground connection；Positive supply termination+5V the power supply of amplifier U9, negative power end ground connection, output end conduct
The frequency detecting output end in controllable frequency source 23 is denoted as port FrqM_out and is connected with single-chip microcontroller 21；A termination of resistance R17+
12V power supply, the base stage of another termination triode Q1；A termination+12V power supply of resistance R19, the current collection of another termination triode Q1
Pole；The base stage of a termination triode Q1 of capacitor C17, the cathode of another termination electrolytic capacitor C16；The anode of electrolytic capacitor C16
Connect the emitter of triode Q1；The base stage of a termination triode Q1 of resistance R18, other end ground connection；Resistance R20 mono- terminates three poles
The emitter of pipe Q1, other end ground connection；The emitter of a termination triode Q1 of capacitor C14, other end ground connection；Electrolytic capacitor
The anode of C15 connects the collector of triode Q1, and cathode connects the emitter of triode Q1；A termination triode Q1 of controllable impedance L1
Collector, it is another termination electrolytic capacitor C16 cathode；The collector of triode Q1 meets port SinM_out.Module output
The adjustable standard sine wave of frequency provides required modulated signal for driver circuit for piezoelectric ceramics 24, while being phase bit comparison electricity
Road 20 provides reference phase reference.
7 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, it is configured to produce by 1 × N photoswitch 1,2~the first photo-coupler 12 of optical fiber group
The fundamental resonance chamber of third contact of a total solar or lunar eclipse orphan, when selecting different length from optical fiber group 2 by 1 × N photoswitch 1 and 1 × N photo-coupler 3
Optical fiber when, resonant cavity can generate different types of soliton, and generated a part of signal of soliton passes through the second optical coupling
Device 13 is entered to be made of third photo-coupler 14, piezoelectric ceramics 15, driver circuit for piezoelectric ceramics 24, the 4th photo-coupler 16
You are interfered at interferometer Mach Zehnder, while for Mach Zehnder, your interferometer provides a control signal in controllable frequency source 23
Sin (ω t), the signal are influenced in interferometer by soliton central wavelength, then are converted into telecommunications through photoelectric conversion circuit 17
Number and by obtaining sin (ω t+ Δ θ) after the anti-cosine transform of functional transformation circuit 18, which passes through adaptive amplitude normalizing
19 amplitude of circuit is adjusted to a fixed size, and signal and controllable frequency source 24 at this time generates sinusoidal signal sin (ω
T) it compares, phase is changed, the phase difference detection of the two is come out to by phase-comparison circuit 20 and is sent into single-chip microcontroller 21,
The central wavelength of phase difference soliton caused by fundamental resonance chamber determined, when single-chip microcontroller 21 detect central wavelength with
It, can be by temperature-control circuit 22 to the Bradley in central wavelength tuner 6 when preset central wavelength changes
The temperature of lattice grating is adjusted, and to adversely affect the central wavelength of soliton in fundamental resonance chamber, and then realizes and stablizes center
The purpose of wavelength, final soliton signal are exported from 10% output end of the second photo-coupler 13.
Claims (4)
1. a kind of soliton generation system based on ytterbium-doping optical fiber laser, structure have, the output end of optoisolator (7) passes through
Yb dosed optical fiber (8) is 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 1060nm of light wavelength division multiplexing (9) is connected with one end of tunable optical filter (11), tunable optical
The other end of filter (11) and the public input terminal of the first photo-coupler (12) are connected, and the 90% of the first photo-coupler (12) is defeated
Outlet and the public input terminal of 1 × N photoswitch (1) be connected, N number of output end of 1 × N photoswitch (1) passes through optical fiber group respectively
(2) the different single mode optical fiber of N item in is connected with N number of input terminal of 1 × N photo-coupler (3), and the optical fiber group (2) is by N
The different single mode optical fiber of length is constituted, and N is 2~8 integer, the public output and saturable of 1 × N photo-coupler (3)
One end of absorber (4) is connected, and the other end of saturable absorber (4) is connected with one end of dispersion compensating fiber (5), feature
It is, structure is in addition, the other end of dispersion compensating fiber (5) is connected with the input terminal of center wavelength tuning device (6), middle cardiac wave
The output end of long tuner (6) is connected with the input terminal of optoisolator (7)；10% output end of the first photo-coupler (12) with
The input terminal of second photo-coupler (13) is connected, and 10% output end of the second photo-coupler (13) is as of the invention final defeated
Out, 90% output end of the second photo-coupler (13) is connected with third photo-coupler (14) input terminal, third photo-coupler (14)
An output end be connected with an input terminal of the 4th photo-coupler (16), the another output of third photo-coupler (14)
It is connected with the one end for the optical fiber being wrapped on piezoelectric ceramics (15), is wrapped in the other end and of the optical fiber on piezoelectric ceramics (15)
Another input terminal of four photo-couplers (16) is connected, output end and photoelectric conversion circuit (17) of the 4th photo-coupler (16)
Input terminal is connected, and the input terminal of the output end and function translation circuit (18) of photoelectric conversion circuit (17) is connected, functional transformation electricity
The output end on road (18) is connected with the input terminal of adaptive amplitude normalizing circuit (19), adaptive amplitude normalizing circuit (19) it is defeated
Outlet is connected with an input terminal of phase-comparison circuit (20), output end and single-chip microcontroller (21) phase of phase-comparison circuit (20)
Even, the frequency output terminal of controllable frequency source (23) is connected with single-chip microcontroller (21), the sinusoidal signal output end of controllable frequency source (23)
It 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), presses
The output end of electroceramics driving circuit (24) is connected with the control terminal of piezoelectric ceramics (15), single-chip microcontroller (21) and temperature-control circuit
(22) temperature setting end is connected, the current output terminal of temperature-control circuit (22) and half in center wavelength tuning device (6)
Conductor thermoelectric cooling module (64) is connected, the thermistor input terminal of temperature-control circuit (22) and center wavelength tuning device (6)
Thermistor (63) be 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 dispersion compensation light
Fine (5) are 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 18 is denoted as port ACOS_in, with light
The output end of power 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, 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 C9 and one end of resistance R3 and chip U2's
Pin 3 is connected, the other end ground connection of resistance R3, input of the other end of capacitor C9 as adaptive amplitude normalizing circuit (19)
End, 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, and pin 11 is connected with pin 12 and with capacitor C5's
One end 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, capacitor C4
The other end ground connection；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 of chip U2
It is connected with one end of resistance R12 and resistance R11, the other end of resistance R12 ground connection, the other end of resistance R11 is defeated with amplifier U4's
One end of outlet and capacitor C8 are connected, the positive supply termination+5V power supply of amplifier U8, negative power end ground connection；The other end of capacitor C8
It is connected with one end of resistance R10, the other end of resistance R10 is connected with the non-inverting input terminal of amplifier U4；The anti-phase input of amplifier U4
It holds and is connected with the sliding end of sliding variohm W3, one end of slide rheostat W3 is connected with+5V power supply, slide rheostat W3's
Other end ground connection；One end of capacitor C7 is connected with the non-inverting input terminal of one end of resistance R9 and amplifier U4, the other end of capacitor C7
Ground connection, the other end of resistance R9 are connected with the output end of one end of resistance R7 and amplifier U3, the other end and amplifier U3 of resistance R7
Inverting input terminal be connected；One end of resistance R8 is connected with the non-inverting input terminal of amplifier U3, other end ground connection；The positive electricity of amplifier U3
Source connects+5V power supply, negative power end ground connection；Output end of the pin 10 of chip U2 as adaptive amplitude normalizing circuit (19),
It is denoted as port ADAPT_out, is connected with an input terminal of phase-comparison circuit (20)；The pin 10 and diode D1 of chip U2
Anode be connected, the cathode of diode D1 is connected with one end of resistance R4, the other end of resistance R4 and one end of resistance R5 and fortune
The inverting input terminal for putting U3 is connected, and the other end of resistance R5 is connected with the anode of diode D2, the cathode of diode D2 and sliding
The sliding end of rheostat W2 is connected；One end of slide rheostat W2 is connected and is grounded with the cathode of diode D3, slide rheostat
The other end of W2 is connected with the anode of one end of resistance R6 and diode D3, another termination -5V power supply of resistance R6；The core
Piece 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 in the controllable frequency source (23) is the non-inverting input terminal of a termination amplifier U9 of resistance R22, another termination
Ground；The non-inverting input terminal of a termination amplifier U9 of capacitor C18, the other end are exported as the sinusoidal signal of controllable frequency source (23)
End, is denoted as port SinM_out, is connected with the port PHASE_in2 of phase-comparison circuit (20), also electric with Piezoelectric Ceramic
The input terminal on road (24) is connected；The inverting input terminal of a termination amplifier U9 of resistance R21, other end ground connection；The positive electricity of amplifier U9
Source connects+5V power supply, negative power end ground connection, and frequency output terminal of the output end as controllable frequency source (23) is denoted as port FrqM_
O ut is connected with single-chip microcontroller (21)；A termination+12V power supply of resistance R17, the base stage of another termination triode Q1；Resistance R19
A termination+12V power supply, it is another termination triode Q1 collector；The base stage of a termination triode Q1 of capacitor C17, it is another
Terminate the cathode of electrolytic capacitor C16；The anode of electrolytic capacitor C16 connects the emitter of triode Q1；Three poles of termination of resistance R18
The base stage of pipe Q1, other end ground connection；Resistance R20 mono- terminates the emitter of triode Q1, other end ground connection；One end of capacitor C14
Connect the emitter of triode Q1, other end ground connection；The anode of electrolytic capacitor C15 connects the collector of triode Q1, and cathode connects three poles
The emitter of pipe Q1；The collector of a termination triode Q1 of controllable impedance L1, the cathode of another termination electrolytic capacitor C16；Three
The collector of pole pipe Q1 meets port SinM_out.
2. a kind of soliton generation device based on passive mode-locking ytterbium-doping optical fiber laser according to claim 1, special
Sign is that the pump light source (10) is 980nm laser light source.
3. a kind of soliton generation device based on passive mode-locking ytterbium-doping optical fiber laser according to claim 1, special
Sign is, it is 10 that the first photo-coupler (12) and the second photo-coupler (13), which are all splitting ratios,：90 1 × 2 photo-coupler.
4. a kind of soliton generation device based on passive mode-locking ytterbium-doping optical fiber laser according to claim 1, special
Sign is, it is 50 that third photo-coupler (14) and the 4th photo-coupler (16), which are all splitting ratios,：50 1 × 2 photo-coupler.
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