CN107302399A - A kind of fiber phase compensator of modulus mixing control and compensation method - Google Patents
A kind of fiber phase compensator of modulus mixing control and compensation method Download PDFInfo
- Publication number
- CN107302399A CN107302399A CN201710658664.0A CN201710658664A CN107302399A CN 107302399 A CN107302399 A CN 107302399A CN 201710658664 A CN201710658664 A CN 201710658664A CN 107302399 A CN107302399 A CN 107302399A
- Authority
- CN
- China
- Prior art keywords
- modulators
- signal
- phase
- fiber
- microprocessor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
- H04B10/2543—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to fibre non-linearities, e.g. Kerr effect
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
- H04B10/505—Laser transmitters using external modulation
- H04B10/5057—Laser transmitters using external modulation using a feedback signal generated by analysing the optical output
- H04B10/50577—Laser transmitters using external modulation using a feedback signal generated by analysing the optical output to control the phase of the modulating signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/60—Receivers
- H04B10/61—Coherent receivers
- H04B10/616—Details of the electronic signal processing in coherent optical receivers
- H04B10/6163—Compensation of non-linear effects in the fiber optic link, e.g. self-phase modulation [SPM], cross-phase modulation [XPM], four wave mixing [FWM]
Abstract
The present invention mixes fiber phase compensator and the compensation method of control for a kind of modulus, the Michelson's interferometer phase difference output of 3 × 3 fiber couplers of this compensator is 2 beam laser signals of 2 π/3, access first and second photodetector, output signal access microprocessor；Another road analog electrical signal of first photodetector is added co- controlling A modulators to the control signal of A modulators with microprocessor.Microprocessor output signal controls B modulators.The analog signal of the photodetector of this compensation method first directly carries out phase compensation to A modulators；Microprocessor is obtained phase place change direction and the changing value of coherent signal by the output of two photodetectors, and drift value exceedes pi/2, and microprocessor digital control A modulators are compensated back within ± pi/2.Microprocessor regulation B modulators, make A recover 50% range during A modulators nearly full scale.Analog and digital signal of the present invention, which is combined, takes into account wide range and high-precision phase position compensation requirement.
Description
Technical field
The present invention relates to a kind of optical fiber transmission radio frequency coherent signal or the stabilized fiber phase transmission equipment of frequency stabilization signal, specifically relate to
And fiber phase compensator and the compensation method of a kind of modulus mixing control, optical fiber is prolonged with analog signal and data signal mixing
Slow phase jitter is accurately compensated.
Background technology
Fiber phase compensator is that a kind of stabilized fiber for transmitting radio frequency coherent signal or frequency stabilization signal applied to optical fiber is passed on from one to another
Transfer device, fiber phase compensator includes single longitudinal mode laser, fibre optic interferometer, photodetector, microprocessor, digital-to-analogue and mould
Number change-over circuit, wavelength division multiplexer and the fibre optic phase modulator based on emission type piezoelectric ceramics, receiving terminal install solution wavelength-division
The demultiplex point fiber termination box that multiplexer and fiber reflector are constituted, fibre optic phase modulator conciliates wavelength-division fiber termination box and is connected to biography
Fine two ends are lost, the common fiber phase jitter compensation for completing Transmission Fibers, and service signal on the transmission fiber saturating
Bright transmission.
Existing fiber phase compensator is to use analog control method, is become by detection fiber interferometer Output optical power
Change, judge phase compensation direction.The method requires that fiber phase drift compensation precision controlling is controlled within ± pi/2, that is, one
The leading edge portion in individual lightwave signal cycle or trailing edge part；Because feedback control reference point is only a power reference point,
When phase drift amount exceed above range, feedback control reference point then using the intermediate point in another light wave cycle as reference point,
Thus, when phase drift is more than one or during n light wave cycle, 2n π phase drift just can not be found and compensated, causes feedback
Control failure.Simultaneously as fiber phase compensator uses continuous wave laser as detectable signal, optical maser wavelength only has 1.55 μ
M, for the fibre optic phase modulator based on single PZT, the dynamic range typically effectively adjusted no more than 12bit, therefore it is existing
Fiber phase compensator compensation rate degree within 10.6ps, the fiber distance of its effective compensation only has hundreds of meters, it is impossible to
Meet the steady phase transmission requirement of more long-distance optical fiber.Therefore, for vibrating the violent and big use environment of temperature change, it can produce
Fiber phase compensator is frequently multiple caused by feedback control failure and compensation range are limited caused by the tracking failure of power reference point
The phenomenon of position, has a strong impact on and uses.
The effective compensation range of feedback control failure and increase fiber phase compensator is avoided, some schemes are to use bar
Line counting method relaxes phase drift detecting and compensation precision, is adjusted using two or more PZT fiber phases for winding optical fiber formation
Device processed carries out phase compensation, or simultaneously using adjustable optic fibre delay line (VOD) progress phase compensation, but be difficult to while taking into account mould
Intend the high-precision characteristic of control method.
The content of the invention
The purpose of the present invention is to overcome the phase compensation range of fiber phase compensator is small, operating environment requirements are high to lack
There is provided a kind of fiber phase compensator of modulus mixing control, Michael of the laser access based on 3 × 3 fiber couplers for point
Inferior interferometer, Michelson's interferometer phase difference output is two beam laser signals of 2 π/3, is respectively connected to the first photodetector
With the second photodetector, the analog electrical signal of two photodetector output accesses microprocessor through analog-to-digital conversion respectively, the
One photodetector another road output analog electrical signal access adder, while microprocessor output all the way to A modulate
The control signal of device (i.e. small-range fibre optic phase modulator) also accesses same adder after D/A converter module, into described
Two signal co- controlling A modulators of adder, another road of microprocessor output is to B modulators (i.e. wide range optical fiber phase
Position modulator) control signal after D/A converter module directly control B modulators, extend the phase of this fiber phase compensator
Compensate range.Data signal and analog signal mixing compensate control to phase drift.
Another object of the present invention is to provide a kind of compensation method of the fiber phase compensator of modulus mixing control, based on 3
The Michelson's interferometer phase difference output of × 3 fiber couplers for 2 π/3 two-way laser signal to the first photodetector and
Second photodetector, the analog electrical signal all the way of the first photodetector output is directly accessed the addition being connected with A modulators
Device, for carrying out feedback control phase compensation；Another road analog electrical signal and the second photoelectricity of first photodetector output are visited
The analog electrical signal for surveying device output is each through analog-to-digital conversion feeding microprocessor, and microprocessor, which is sentenced with double light path to method, obtains relevant letter
Number change direction, with Fringe-counting method detect coherent signal phase changing value, i.e. phase drift amount exceed pi/2 value, obtain
The digital controlled signal of phase compensation, is added through digital-to-analogue conversion feeding adder with the analog electrical signal of the first photodetector,
Co- controlling A modulators compensate back phase drift amount within ± pi/2；When A modulators regulated quantity is close to full scale, in order to keep away
Exempt from A modulators and exceed regulation range, microprocessor sends digital controlled signal and slowly adjusts B modulators in the same direction through digital-to-analogue conversion,
Until the phase adjusted numerical value of A modulators is returned near 50% range.Analog signal and data signal, which are combined, takes into account a large amount of
Journey and high-precision phase position compensation are required.
A kind of fiber phase compensator of present invention modulus mixing control includes single longitudinal mode laser, fibre optic interferometer, micro-
Processor, photodetector, D/A converting circuit, analog to digital conversion circuit, wavelength division multiplexer and based on emission type piezoelectric ceramics
Fibre optic phase modulator, fibre optic interferometer of the invention is the Michelson's interferometer based on 3 × 3 fiber couplers, Dan Zong
2nd port of 3 × 3 fiber couplers of mode laser access Michelson's interferometer, its 4th port is used as Michelson interference
The measuring arm of instrument, connects wavelength division multiplexer, and the business optical signal multiplex with inputting wavelength division multiplexer simultaneously, wavelength division multiplexer is public
End connects Transmission Fibers through A modulators and B modulators；The A modulators and B modulators of optical fiber series connection are output as this fiber phase
The output end of compensator.The port of 3 × 3 fiber coupler the 6th connects the fiber reflector of Michelson's interferometer as reference arm,
The two ways of optical signals reflected from the fiber reflector of Transmission Fibers and the 6th port returns to 3 × 3 through the 4th and the 6th port respectively
Fiber coupler, and it is respectively connected to the first and second photodetectors, the light of the 1st and the 3rd port output through the 1st and the 3rd port
Signal phase differs 2 π/3.5th port of 3 × 3 fiber couplers of the invention is vacant.
The analog electrical signal all the way exported after the first photodetector opto-electronic conversion is directly accessed adder, be used for into
Row feedback control phase compensation；Another road analog electrical signal of first photodetector output and the second photodetector photoelectricity turn
Change gained electric signal to be followed by into microprocessor through analog-to-digital conversion module, the first via control signal of microprocessor output turns through digital-to-analogue
Above-mentioned adder is accessed after changing, adder connection A modulators are visited after the digital controlled signal conversion of microprocessor with the first photoelectricity
The analog electrical signal for surveying device output is added co- controlling A modulators.Second tunnel control signal of microprocessor output turns through digital-to-analogue
Change the mold and B modulators are accessed after block.
The A modulators are small-range fibre optic phase modulator, and B modulators are wide range fibre optic phase modulator.A is modulated
Device is fibre optic phase modulator of the Optical Fiber Winding in tubulose emission type piezoelectric ceramics, and fiber phase is realized in piezoelectric ceramics electrostriction
Regulation.The B modulators are fibre optic phase modulator either continuously adjustabe of the Optical Fiber Winding in tubulose emission type piezoelectric ceramics
Fibre delay line.The maximal regulated range of B modulators is 10~100 times of A modulator maximal regulated ranges.
The A modulators are step-less adjustment, that is, the modulator continuously adjusted, the regulation step-length of B modulators is 10~100 λ,
λ is the laser signal wavelength that single longitudinal mode laser is exported.It is recommended as 10 λ.
The splitting ratio of 3 × 3 fiber coupler is 1:1:1, that is, assign to the optical signal power phase of 4,5,6 ports output
Deng.
Analog electrical signal obtained by the first photodetector opto-electronic conversion is after signal amplification circuit, and access all the way adds
Microprocessor is accessed in musical instruments used in a Buddhist or Taoist mass, another road through analog-to-digital conversion module；Simulation electricity obtained by the second photodetector opto-electronic conversion
Signal accesses microprocessor through analog-to-digital conversion module again after signal amplification circuit.Two signal amplification circuits are identical.
The adder accesses A modulators, the second tunnel control of the microprocessor output through a high voltage amplifier circuit
Signal accesses B modulators through a high voltage amplifier circuit again after D/A converter module.Two high voltage amplifier circuits are identical.
A kind of compensation method of the fiber phase compensator of modulus mixing control, its key step is as follows：
Ith, phase adjusted range is at 50% range
On A modulators and B modulators after electricity, acquiescence phase adjusted range is at 50%；
IIth, fiber phase drift value is in the range of ± pi/2, and analog signal directly controls A modulators
The detection Transmission Fibers phase jitter of first photodetector causes the changed power width of fibre optic interferometer output signal
Degree, when fiber phase drift value is in the range of ± pi/2, the detection performance number for choosing a proper phase point is analog feedback control
Reference point processed, according to the sinusoidal rising edge of phase place change or trailing edge choosing first, determining to use positive feedback or negative-feedback, with
The analog feedback controls analog feedback control phase of the reference point for basic point on feedback compensation direction within progress ± pi/2 to mend
Repay.Analog feedback signal carries out feedback control automatically without microprocessor intervention.The first photodetector feeds back under initial situation
The no-voltage control signal that exports of analog signal and microprocessor enter adder, control A modulators.
The maximum and minimum of the first photodetector detection power are recommended in the analog feedback control with reference to point selection
Average value.
IIIth, fiber phase drift value exceedes ± pi/2 scope, and data signal participates in control A modulators
When fiber phase drift value exceedes ± pi/2 scope, the analog feedback signal of the first photodetector will be in 2n π
Place, A modulators lose feedback control reference point.N be not equal to zero integer, positive number or negative.Microprocessor is according to two light
The signal of electric explorer is sentenced to method identification phase drift direction using double light path, and phase drift amount is detected using Fringe-counting method
Size, obtains the digital controlled signal to A modulators, through digital-to-analogue conversion, the analog electrical signal exported with the first photodetector
A modulators are accessed after being added in adder.A modulators had both been worked under analog feedback state of a control, and received micro- place simultaneously
Manage the intervention of device digital controlled signal.
Digital controlled signal intervenes A modulators compensation 2n π phase offset, phase drift amount is recovered to former feedback control
In the range of scope, i.e. ± pi/2；The signal of two photodetectors makes the digital control letter to A modulators that microprocessor is exported
Number voltage signal it is stable constant on current voltage, it is micro- until occurring fiber phase drift value next time more than ± pi/2 scope
Processor will intervene the phase compensation of A modulators with digital controlled signal again.
IVth, the range regulation of A modulators
When A modulators reach that it adjusts the 5% or 95% of range, i.e., when close to 0% or 100%, in order to avoid A is modulated
Device exceedes regulation range, and the digital controlled signal that microprocessor is sent slowly adjusts B modulators in the same direction through digital-to-analogue conversion, until A
The phase adjusted numerical value of modulator returns to 45% to 55% range.
Compared with prior art, a kind of fiber phase compensator of modulus mixing control of the invention and compensation method is beneficial
Effect is：1st, the high-precision analog feedback control of the optical fiber phase compensator when phase drift amount exceedes ± pi/2 scope is overcome
The problem of feedback reference point drift, the digital controlled signal that can compensate for feedback reference point phase drift is exported using microprocessor
The fibre optic phase modulator of small-range is acted on, the phase drift amount adjusted the need for the fibre optic phase modulator for making small-range is extensive
It is multiple to arrive within ± pi/2 scope；2nd, simulation control and digital control be combined have taken into account wide range and high-precision phase position compensation requirement,
Phase compensation precision reaches 0.39fs~3.9fs, and even more high precision, the fiber distance of effective compensation reaches 10km, realize it is long away from
Superhigh precision from optical fiber is surely mutually transmitted.
Brief description of the drawings
Fig. 1 is the fiber phase compensator example structure schematic diagram that this modulus mixes control.
Fig. 2 is the compensation method embodiment control flow chart for the fiber phase compensator that this modulus mixes control.
Embodiment
The fiber phase compensator embodiment of modulus mixing control
The fiber phase compensator embodiment of this modulus mixing control including single longitudinal mode laser, optical fiber as shown in figure 1, do
Interferometer, microprocessor, photodetector, D/A converting circuit, analog to digital conversion circuit, signal amplification circuit, high voltage amplifier circuit,
Wavelength division multiplexer and two fibre optic phase modulators based on emission type piezoelectric ceramics, the fibre optic interferometer of this example is based on 3
The Michelson's interferometer of × 3 fiber couplers, single longitudinal mode laser accesses 3 × 3 fiber couplers of Michelson's interferometer
The 2nd port, its 4th port be used as Michelson's interferometer measuring arm, connect wavelength division multiplexer, with simultaneously input wavelength-division answer
With the business optical signal multiplex of device, wavelength division multiplexer common port connects Transmission Fibers, optical fiber series connection through A modulators and B modulators
A modulators and B modulators be output as the output end of this fiber phase compensator.The port conduct of 3 × 3 fiber coupler the 6th
Reference arm connects the fiber reflector of Michelson's interferometer, is reflected from the fiber reflector of Transmission Fibers and the 6th port
Two ways of optical signals return to 3 × 3 fiber couplers through the 4th and the 6th port respectively, and be respectively connected to first through the 1st and the 3rd port
With the second photodetector, the optical signal phase of the 1st and the 3rd port output differs 2 π/3.5th port is vacant.
The analog electrical signal exported after this example the first photodetector opto-electronic conversion is after signal amplification circuit, all the way directly
Adder is accessed, another road is followed by into microprocessor through analog-to-digital conversion module；Telecommunications obtained by second photodetector opto-electronic conversion
Microprocessor is accessed through analog-to-digital conversion module number after another identical signal amplification circuit again.
The first via control signal of microprocessor output accesses above-mentioned adder after digital-to-analogue conversion, and adder is high through one
Press amplifying circuit connection A modulators, the simulation exported after the digital controlled signal conversion of microprocessor with the first photodetector
Electric signal is added co- controlling A modulators.Second tunnel control signal of microprocessor output is after D/A converter module again through another
One identical high voltage amplifier circuit accesses B modulators.
This example A modulators are small-range fibre optic phase modulator, and B modulators are wide range fibre optic phase modulator.This example
A, B modulator are fibre optic phase modulator of the Optical Fiber Winding in tubulose emission type piezoelectric ceramics.The maximum tune of this example B modulators
Section range is 100 times of A modulator maximal regulated ranges.
This example A modulators are the modulator continuously adjusted, and the regulation step-length of B modulators is 10 λ.
The splitting ratio of the fiber coupler of this example 3 × 3 is 1:1:1, that is, assign to the optical signal power phase of 4,5,6 ports output
Deng.
The compensation method embodiment of the fiber phase compensator of modulus mixing control
The compensation method embodiment flow chart of the fiber phase compensator of this modulus mixing control is as shown in Fig. 2 main step
It is rapid as follows：
Ith, phase adjusted range is at 50% range
On A modulators and B modulators after electricity, acquiescence phase adjusted range is at 50%；
IIth, fiber phase drift value is in the range of ± pi/2, and analog signal directly controls A modulators
The detection Transmission Fibers phase jitter of first photodetector causes the changed power width of fibre optic interferometer output signal
Degree, when fiber phase drift value is in the range of ± pi/2, chooses maximum and minimum that the first photodetector detects power
Average value as analog feedback control reference point, according to the sinusoidal rising edge of phase place change or trailing edge choosing first, really
Surely use positive feedback or negative-feedback, using the analog feedback control reference point as basic point on feedback compensation direction progress ± pi/2 with
Interior analog feedback control phase compensation.The analog signal that the first photodetector feeds back under initial situation is exported with microprocessor
No-voltage control signal enter adder, control A modulators.
IIIth, fiber phase drift value exceedes ± pi/2 scope, and data signal participates in control A modulators
When fiber phase drift value exceedes ± pi/2 scope, the analog feedback signal of the first photodetector will be in 2n π
Place, n be not equal to zero integer.Microprocessor is sentenced to method according to the signal of two photodetectors using double light path recognizes phase
Drift bearing, the size of phase drift amount is detected using Fringe-counting method, the digital controlled signal to A modulators is obtained, through number
Mould is changed, and the analog electrical signal exported with the first photodetector accesses A modulators after being added in adder.A modulators were both
Work under analog feedback state of a control, and receive the intervention of microprocessor digital control signal simultaneously.
Digital controlled signal intervenes A modulators compensation 2n π phase offset, phase drift amount is recovered to former feedback control
In the range of scope, i.e. ± pi/2；The signal of two photodetectors makes the digital control letter to A modulators that microprocessor is exported
Number voltage signal it is stable constant on current voltage, it is micro- until occurring fiber phase drift value next time more than ± pi/2 scope
Processor will intervene the phase compensation of A modulators with digital controlled signal again.
IVth, the range regulation of A modulators
When A modulators reach that it adjusts the 5% or 95% of range, i.e., when close to 0% or 100%, in order to avoid A is modulated
Device exceedes regulation range, and the digital controlled signal that microprocessor is sent slowly adjusts B modulators in the same direction through digital-to-analogue conversion, until A
The phase adjusted numerical value of modulator returns to 45% to 55% range.
Above-described embodiment, is only to the specific of the purpose of the present invention, technical scheme and beneficial effect further description
Individual example, the present invention is not limited to this.All any modifications made within the scope of disclosure of the invention, equivalent substitution, change
Enter, be all contained within protection scope of the present invention.
Claims (9)
1. a kind of fiber phase compensator of modulus mixing control, including single longitudinal mode laser, fibre optic interferometer, microprocessor,
Photodetector, D/A converting circuit, analog to digital conversion circuit, wavelength division multiplexer and the optical fiber phase based on emission type piezoelectric ceramics
Position modulator, it is characterised in that：
The fibre optic interferometer is the Michelson's interferometer based on 3 × 3 fiber couplers, single longitudinal mode laser access Michael
2nd port of 3 × 3 fiber couplers of inferior interferometer, its 4th port connects ripple as the measuring arm of Michelson's interferometer
Division multiplexer, the business optical signal multiplex with inputting wavelength division multiplexer simultaneously, wavelength division multiplexer common port is adjusted through A modulators and B
Device processed connects Transmission Fibers, and the A modulators and B modulators of optical fiber series connection are output as the output end of this fiber phase compensator；3
The port of × 3 fiber coupler the 6th connects the fiber reflector of Michelson's interferometer as reference arm, from Transmission Fibers and the 6th
The two ways of optical signals that the fiber reflector of port is reflected returns to 3 × 3 fiber couplers through the 4th and the 6th port respectively, and passes through
1st and the 3rd port is respectively connected to the first and second photodetectors, and 2 π of optical signal phase difference that the 1st and the 3rd port is exported/
3, the 5th port of 3 × 3 fiber coupler is vacant；
The analog electrical signal all the way of the first photodetector output is directly accessed adder；The output of first photodetector
Electric signal obtained by another road analog electrical signal and the second photodetector opto-electronic conversion is followed by into microprocessor through analog-to-digital conversion module
Device, the first via control signal of microprocessor output accesses above-mentioned adder after digital-to-analogue conversion, and adder connects A modulators,
The analog electrical signal exported after the digital controlled signal conversion of microprocessor with the first photodetector is added co- controlling A modulation
Device；Second tunnel control signal of microprocessor output accesses B modulators after D/A converter module；
The B modulators are wide range fibre optic phase modulator, and A modulators are small-range fibre optic phase modulator.
2. the fiber phase compensator of modulus mixing control according to claim 1, it is characterised in that：
The A modulators are fibre optic phase modulator of the Optical Fiber Winding in tubulose emission type piezoelectric ceramics；The B modulators are light
Fibre is wrapped in the fibre optic phase modulator either continuously adjustabe optical fiber delay line of tubulose emission type piezoelectric ceramics.
3. the fiber phase compensator of modulus mixing control according to claim 1, it is characterised in that：
The modulator that the A modulators are continuously adjusted；Regulation step-length 10~100 λ, λ of the B modulators are single longitudinal mode laser
The laser signal wavelength of device output.
4. the fiber phase compensator of modulus mixing control according to claim 1, it is characterised in that：
The modulator that the A modulators are continuously adjusted；Regulation step-length 10 λ, λ of the B modulators are that single longitudinal mode laser is defeated
The laser signal wavelength gone out.
5. the fiber phase compensator of modulus mixing control according to claim 1, it is characterised in that：
The maximal regulated range of the B modulators is 10~100 times of A modulator maximal regulated ranges.
6. the fiber phase compensator of modulus mixing control according to claim 1, it is characterised in that：
The splitting ratio of 3 × 3 fiber coupler is 1:1:1, that is, the optical signal power for assigning to the output of 4,5,6 ports is equal.
7. the fiber phase compensator of modulus mixing control according to claim 1, it is characterised in that：
The analog signal of described two photodetector outputs accesses analog-to-digital conversion mould again after identical signal amplification circuit
Block；And/or, the adder accesses A modulators, the second tunnel control of the microprocessor output through a high voltage amplifier circuit
Signal accesses B modulators, two high voltage amplifier circuit phases again after a high voltage amplifier circuit again after D/A converter module
Together.
8. the compensation method of the fiber phase compensator of modulus mixing control according to any one of claim 1 to 7, its
It is characterised by that its key step is as follows：
Ith, phase adjusted range is at 50% range
On A modulators and B modulators after electricity, acquiescence phase adjusted range is at 50%；
IIth, fiber phase drift value is in the range of ± pi/2, and analog signal directly controls A modulators
The detection Transmission Fibers phase jitter of first photodetector causes the changed power amplitude of fibre optic interferometer output signal, when
When fiber phase drift value is in the range of ± pi/2, chooses the detection performance number of a proper phase point and control ginseng for analog feedback
Examination point, according to the sinusoidal rising edge of phase place change or trailing edge choosing first, determining to use positive feedback or negative-feedback, with the mould
It is analog feedback control phase compensation of the basic point on feedback compensation direction within progress ± pi/2 to intend feedback control reference point；Just
The no-voltage control signal that the analog signal that the first photodetector feeds back in the case of beginning is exported with microprocessor enters adder,
Control A modulators；
IIIth, fiber phase drift value exceedes ± pi/2 scope, and data signal participates in control A modulators
When fiber phase drift value exceedes ± pi/2 scope, the analog feedback signal of the first photodetector will be at 2n π, and n is
It is not equal to zero integer；Microprocessor is sentenced to method according to the signal of two photodetectors using double light path recognizes phase drift side
To, the size of phase drift amount is detected using Fringe-counting method, the digital controlled signal to A modulators is obtained, through digital-to-analogue conversion,
The analog electrical signal exported with the first photodetector accesses A modulators after being added in adder；A modulators both work in mould
Intend under Feedback control, and receive the intervention of microprocessor digital control signal simultaneously；
Digital controlled signal intervenes A modulators compensation 2n π phase offset, phase drift amount is recovered to former feedback control model
Enclose, i.e., in the range of ± pi/2；The signal of two photodetectors makes the digital controlled signal to A modulators that microprocessor is exported
Voltage signal it is stable constant on current voltage, until occurring fiber phase drift value next time more than ± pi/2 scope, micro- place
Manage the phase compensation that device will intervene A modulators with digital controlled signal again；
IVth, the range regulation of A modulators
When A modulators reach that it adjusts the 5% or 95% of range, the digital controlled signal that microprocessor is sent is through digital-to-analogue conversion
It is slow in the same direction to adjust B modulators, until the phase adjusted numerical value of A modulators returns to 45% to 55% range.
9. the fiber phase compensator of modulus mixing control according to claim 7, it is characterised in that：
Analog feedback in the step II controls to refer to the maximum of the photodetector of point selection first detection power and minimum
The average value of value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710658664.0A CN107302399B (en) | 2017-08-04 | 2017-08-04 | Optical fiber phase compensator controlled by analog-digital mixing and compensation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710658664.0A CN107302399B (en) | 2017-08-04 | 2017-08-04 | Optical fiber phase compensator controlled by analog-digital mixing and compensation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107302399A true CN107302399A (en) | 2017-10-27 |
| CN107302399B CN107302399B (en) | 2023-05-12 |
Family
ID=60133284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710658664.0A Active CN107302399B (en) | 2017-08-04 | 2017-08-04 | Optical fiber phase compensator controlled by analog-digital mixing and compensation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107302399B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116886200A (en) * | 2023-07-27 | 2023-10-13 | 济南安迅科技有限公司 | Optical communication device, optical communication system and optical communication method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328637A (en) * | 1998-09-22 | 2001-12-26 | 英国国防部 | Optical phase detector |
| WO2006071971A2 (en) * | 2004-12-23 | 2006-07-06 | Massachusetts Institute Of Technology | Reconfigurable polarization independent interferometers and methods of stabilization |
| CN101498590A (en) * | 2009-02-19 | 2009-08-05 | 北京航空航天大学 | Interference type optical fiber sensor and its digital closed-loop method for controlling working point |
| CN102322880A (en) * | 2011-08-18 | 2012-01-18 | 天津大学 | Polarization sensitive distributive optical frequency domain reflection disturbance sensor and demodulation method |
| CN102420661A (en) * | 2011-12-15 | 2012-04-18 | 华中科技大学 | Device for compensating non-linear damage of optical fiber |
| CN103929250A (en) * | 2014-04-28 | 2014-07-16 | 中国电子科技集团公司第三十四研究所 | Optical fiber phase compensator and use method thereof |
| CN207010686U (en) * | 2017-08-04 | 2018-02-13 | 中国电子科技集团公司第三十四研究所 | A kind of fiber phase compensator of modulus mixing control |
-
2017
- 2017-08-04 CN CN201710658664.0A patent/CN107302399B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1328637A (en) * | 1998-09-22 | 2001-12-26 | 英国国防部 | Optical phase detector |
| WO2006071971A2 (en) * | 2004-12-23 | 2006-07-06 | Massachusetts Institute Of Technology | Reconfigurable polarization independent interferometers and methods of stabilization |
| CN101498590A (en) * | 2009-02-19 | 2009-08-05 | 北京航空航天大学 | Interference type optical fiber sensor and its digital closed-loop method for controlling working point |
| CN102322880A (en) * | 2011-08-18 | 2012-01-18 | 天津大学 | Polarization sensitive distributive optical frequency domain reflection disturbance sensor and demodulation method |
| CN102420661A (en) * | 2011-12-15 | 2012-04-18 | 华中科技大学 | Device for compensating non-linear damage of optical fiber |
| CN103929250A (en) * | 2014-04-28 | 2014-07-16 | 中国电子科技集团公司第三十四研究所 | Optical fiber phase compensator and use method thereof |
| CN207010686U (en) * | 2017-08-04 | 2018-02-13 | 中国电子科技集团公司第三十四研究所 | A kind of fiber phase compensator of modulus mixing control |
Non-Patent Citations (3)
| Title |
|---|
| DAN XU等: "Laser phase and frequency noise measurement by Michelson interferometer composed of a 3 × 3 optical fiber coupler" * |
| 何俊;肖浩;冯磊;李芳;张松伟;刘育梁;: "基于3×3耦合器的迈克耳孙干涉仪相位特性分析" * |
| 李敏;谢芳;陈志敏;: "高稳定的光纤3×3耦合器干涉位移测量系统" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116886200A (en) * | 2023-07-27 | 2023-10-13 | 济南安迅科技有限公司 | Optical communication device, optical communication system and optical communication method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107302399B (en) | 2023-05-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6671464B1 (en) | Polarization mode dispersion compensator and compensation method | |
| JP3913856B2 (en) | Optical pulse generation device, dispersion measurement device, dispersion compensation device, and dispersion measurement method | |
| US7206516B2 (en) | Apparatus and method for measuring the dispersion of a fiber span | |
| CN1084099C (en) | Optical system employing near-incoherent processing for distortion correction | |
| US20010009469A1 (en) | Optical pulse position detecting circuit and an optical pulse generating apparatus and their methods | |
| JPH11136186A (en) | Optical fiber dispersion compensation system for optical line | |
| CN108683459A (en) | A kind of fiber phase compensator based on Fiber-optic Mach-Zehnder Interferometer | |
| CN103929250A (en) | Optical fiber phase compensator and use method thereof | |
| US20080212962A1 (en) | Chirp measurement method, chirp measurement apparatus and their application | |
| CN101841368A (en) | All-optical dispersion monitor based on optical parameter amplifier | |
| CN103575408A (en) | Coherent light detection system and method for optical fiber delay line phase control | |
| CN104618024A (en) | Anonymous microwave signal long-distance optical fiber phase-stable transmission device eliminating coherent Rayleigh noise | |
| CN109639363A (en) | Any Bias point control device of MZ light intensity modulator and its control method | |
| US20040156038A1 (en) | Method and apparatus for providing real-time chromatic dispersion measurement | |
| CN102170307A (en) | Dynamic frequency offset correction method and coherence optical time-domain reflectometer system | |
| CN110752876B (en) | Long-distance distributed large dynamic microwave optical fiber phase-stabilizing transmission system and method | |
| CN107332611A (en) | A kind of fiber phase compensator of Digital Signals and compensation method | |
| CN107302399A (en) | A kind of fiber phase compensator of modulus mixing control and compensation method | |
| CN207010686U (en) | A kind of fiber phase compensator of modulus mixing control | |
| CN207010680U (en) | A kind of fiber phase compensator of Digital Signals | |
| CN107453836B (en) | Cascade optical fiber phase compensator and optical fiber transmission system | |
| US20220086538A1 (en) | Wavelength Monitoring Device and Controlling Method Thereof | |
| CN102957477B (en) | Signal detecting method and optical signal reception system | |
| CN1167212C (en) | Method and apparatus for removing non-linear distortion in optic transmitter | |
| CN203800941U (en) | Optical fiber phase compensator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |