CN107727367A - A kind of laser frequency noise measuring method and system - Google Patents
A kind of laser frequency noise measuring method and system Download PDFInfo
- Publication number
- CN107727367A CN107727367A CN201710946289.XA CN201710946289A CN107727367A CN 107727367 A CN107727367 A CN 107727367A CN 201710946289 A CN201710946289 A CN 201710946289A CN 107727367 A CN107727367 A CN 107727367A
- Authority
- CN
- China
- Prior art keywords
- output end
- phase noise
- microwave
- laser
- coupler
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
The invention discloses a kind of laser frequency noise measuring method and system, belong to field of optical measurements.Then this method measures the phase noise of rf oscillation signal in the optoelectronic hybrid oscillator using testing laser device as the light source based on the optoelectronic hybrid oscillator constructed by light comb modulator；The frequency noise of testing laser device is obtained according to the phase noise；Optoelectronic hybrid oscillator is the optoelectronic hybrid oscillator of a twin nuclei.This programme measures the frequency noise of laser indirectly by measuring the phase noise of rf oscillation signal, therefore can distinguish the frequency noise and intensity noise of laser, and has high measurement sensitivity.
Description
Technical field
The present invention relates to a kind of laser frequency noise measuring method and system.Light comb modulator is based on by building one
Optoelectronic hybrid oscillator, the light source using testing laser device as the optical-electronic oscillator, formed vibrate during, it is to be measured swash
The frequency noise of light device will be transferred to the phase noise of rf oscillation signal in optical-electronic oscillator up, then by measuring radio frequency
The phase noise of oscillator signal can draw the frequency noise of testing laser device, belong to field of optical measurements.
Background technology
Single-frequency, narrow linewidth laser are the critical components of numerous application systems, including laser radar, coherent light communication system
Optics atomic clock of system, high-precision optical sensing and high stability etc..In general, the line width of laser is to pass through measurement
The power spectral density of its frequency noise is weighed.In the last few years, with the development of narrow linewidth laser, highly sensitive narrow linewidth
Laser frequency noise testing seems more and more important.The scheme of traditional measurement laser frequency noise mainly includes four classes：The
One kind is to use delay from beat frequency method；It based on Mach-Zehnder modulator by the transfer of the frequency noise of laser is sharp that second class, which is,
Luminous power is shaken, so as to obtain the frequency noise of testing laser device；3rd class is to use optical resonator by the frequency of laser
Noise is converted into the shake of luminous power, and then measurement obtains the frequency noise of laser；4th class is that frequency noise is extremely low
Testing laser device and reference laser diode are carried out beat frequency, then obtain testing laser device by narrow linewidth laser as reference source
Frequency noise.
It is the e measurement technology and scheme of some existing laser frequency noises below：
Scheme 1 is document D.Derickson, Fiber Optic Test and Measurement (Prentice-
Hall, 1998) measurement scheme described by.The program utilizes a delay interferometer, by the way that the signal of testing laser device is entered
Line delay, time delayed signal and not the decorrelation operation of time delayed signal are reached after delay, it is finally straight with testing laser device
The optical signal for connecing output carries out beat frequency, so as to reach the purpose of measurement laser frequency noise.
Scheme 2 be Zhejiang University application publication, Publication No. CN 102183362.The program is by using Mach
Zehnder interferometer, complete to have reached the purpose of measurement laser frequency noise to the conversion of light intensity to the frequency noise of laser.
Scheme 3 be Zhejiang University application publication, Publication No. CN 102692314A.The program utilizes a light
Fine resonator, the frequency noise of laser is converted into the amplitude fluctuation of light field, so as to reach measurement laser frequency noise
Purpose.
Scheme 4 is the scheme for the sign narrow linewidth laser frequency noise that Paris, FRA observatory in 2017 proposes
(X.Xie,R.Bouchand,D.Nicolodi,M.Lours,C.Alexandre,and Y.L.Coq,“Phase noise
characterization of sub-hertz linewidth lasers via digital cross
correlation,”Opt.Lett.42(7),1217-1220(2017).).The program employs two pole narrow linewidths, very low frequencies
Testing laser device is carried out beat frequency with two reference laser diodes respectively, passes through measurement by the single-frequency laser of rate noise as reference
The phase noise of beat frequency electric signal, reach the purpose of the frequency noise of measurement testing laser device indirectly.
Method based on delay interferometer measurement laser frequency noise is when measuring pole narrow linewidth laser, it is necessary to be up to
Several kilometers even optical fiber of tens kilometers due to the introducing of long optical fibers, cause great light loss as delay line, and
The introducing of long optical fibers brings inevitable shot noise, reduces the sensitivity of frequency noise measuring system, and this
Method does not have the frequency noise and intensity noise for distinguishing laser；Based on the scheme of Mach zehnder modulators, it is limited to modulate
The frequency noise of device is to the relatively low limitation of intensity noise transformation ratio, it is difficult to realizes that more highly sensitive laser frequency noise is surveyed
Amount；Using the scheme of fiber resonance cavity, measuring system is easily disturbed by environment, reduces laser frequency noise testing
Stability；It is high using the scheme of low frequency noise, the reference laser diode of high stability, cost of implementation, it is difficult to measure any wavelength
The frequency noise of laser.
The content of the invention
For technical problem present in prior art, it is an object of the invention to provide a kind of laser frequency to make an uproar
The measuring method and system of sound.The present invention is applied to any wavelength, narrow linewidth, the frequency with extremely low frequency noise laser and made an uproar
Sound measurement, the measurement for the narrow linewidth laser frequency noise that is particularly suitable for use in.
The technical scheme is that：
A kind of laser frequency noise measuring method, it is characterised in that using testing laser device as being based on light comb modulator
The light source of constructed optoelectronic hybrid oscillator, the phase for then measuring rf oscillation signal in the optoelectronic hybrid oscillator are made an uproar
Sound；The frequency noise of testing laser device is obtained according to the phase noise.
Further, the optoelectronic hybrid oscillator is the optoelectronic hybrid oscillator of a twin nuclei, and it includes a light comb
Modulator, the output end of the light comb modulator are connected through a fiber amplifier with a photo-coupler, an output of the photo-coupler
One section of first single-mode fiber of end connection, the output signal of first single-mode fiber are converted to electric signal through one first photodetector
Input microwave power synthesizer；Another output end of the photo-coupler connects one section of second single-mode fiber, second single-mode fiber
Output signal be converted to electric signal through one second photodetector and input the microwave power synthesizer；The microwave power coupler
Output end successively after microwave phase shifter, the first low phase noise amplifier, electric bandpass filter input microwave directional couple
Device；One output end of the microwave directive coupler is used to connect phase noise tester, and another output end connects direct current biasing device
Ac voltage input mouth；The output port of the direct current biasing device is connected with the driving port of the light comb modulator.
Further, put between the electric bandpass filter and the microwave directive coupler provided with the second low phase noise
Big device, the 3rd low phase noise amplifier；The fiber lengths of first single-mode fiber are the optical fiber of second single-mode fiber
More than 10 times of length.
Further, the phase noise obtains the frequency noise of testing laser deviceIts
In, β is the modulation index of light comb modulator, and FSR is the Free Spectral Range of Fabry-Perot-type cavity in light comb modulator,H (f) is the transmission function of optoelectronic hybrid oscillator,Mixed for photoelectricity
The introduced additional phase noise of all kinds of photoelectric devices in oscillator, the frequency noise of testing laser device is to optoelectronic hybrid oscillator
The introduced additional phase noise of oscillator signal
Further, the optoelectronic hybrid oscillator is the optoelectronic hybrid oscillator of a polarization twin nuclei, and it includes one
Light comb modulator, the output end of the light comb modulator are connected through a fiber amplifier with a polarization beam apparatus, the polarization beam apparatus
An output end connect one section of first polarization maintaining optical fibre, the output signal of first polarization maintaining optical fibre changes through one first photodetector
For electric signal input polarization bundling device；Another output end of the polarization beam apparatus connects one section of second polarization maintaining optical fibre, second guarantor
The fine output signal of polarisation is converted to electric signal through one second photodetector and inputs the polarization beam combiner；The polarization beam combiner
Output end inputs microwave directive coupler after microwave phase shifter, the first low phase noise amplifier, electric bandpass filter successively；
One output end of the microwave directive coupler is used to connect phase noise tester, the friendship of another output end connection direct current biasing device
Flow control source port；The output port of the direct current biasing device is connected with the driving port of the light comb modulator.
Further, put between the electric bandpass filter and the microwave directive coupler provided with the second low phase noise
Big device, the 3rd low phase noise amplifier.
Further, the fiber lengths of first polarization maintaining optical fibre are 10 times of fiber lengths of second polarization maintaining optical fibre
More than.
A kind of laser frequency noise measurement system, it is characterised in that including a light comb modulator, the light comb modulator is used
It is modulated in the laser exported to laser to be measured, the output end of the light comb modulator is through a fiber amplifier and an optical coupling
Device connects, and an output end of the photo-coupler connects one section of first single-mode fiber, and the output signal of first single-mode fiber is through one
First photodetector is converted to electric signal input microwave power synthesizer；Another output end connection one section of the photo-coupler the
Two single-mode fibers, the output signal of second single-mode fiber are converted to electric signal through one second photodetector and input the microwave work(
Rate synthesizer；The output end of the microwave power coupler is successively through microwave phase shifter, the first low phase noise amplifier, electric band logical
Microwave directive coupler is inputted after wave filter；One output end of the microwave directive coupler is used to connect phase noise tester,
The ac voltage input mouth of another output end connection direct current biasing device；The output port of the direct current biasing device is modulated with the light comb
The driving port connection of device.
A kind of laser frequency noise measurement system, it is characterised in that including a light comb modulator, the light comb modulator is used
It is modulated in the laser exported to laser to be measured, the output end of the light comb modulator is through a fiber amplifier and a polarization point
Beam device connects, and an output end of the polarization beam apparatus connects one section of first polarization maintaining optical fibre, the output signal of first polarization maintaining optical fibre
Electric signal input polarization bundling device is converted to through one first photodetector；Another output end of the polarization beam apparatus connects one section
Second polarization maintaining optical fibre, the output signal of second polarization maintaining optical fibre are converted to electric signal through one second photodetector and input the polarization
Bundling device；The output end of the polarization beam combiner is successively through microwave phase shifter, the first low phase noise amplifier, electric bandpass filter
After input microwave directive coupler；One output end of the microwave directive coupler is used to connect phase noise tester, another defeated
Go out the ac voltage input mouth of end connection direct current biasing device；The drive of the output port of the direct current biasing device and the light comb modulator
Moved end mouth connection.
Further, put between the electric bandpass filter and the microwave directive coupler provided with the second low phase noise
Big device, the 3rd low phase noise amplifier.
This programme is that the optoelectronic hybrid oscillator based on light comb modulator realizes that the frequency noise of testing laser device measures
Method.The present invention, will by regarding testing laser device as the light source based on the optoelectronic hybrid oscillator constructed by light comb modulator
The frequency noise of testing laser device is transferred to the phase noise of rf oscillation signal in optoelectronic hybrid oscillator up, then passes through survey
The phase noise of amount rf oscillation signal can obtain the frequency noise of testing laser device.Systematic survey sensitivity is limited only in light
The Johnson noise of photodetector in electric mixer oscillator, the spontaneous emission noise of erbium-doped fiber amplifier and electric amplifier
Thermal noise and flicker noise etc., high laser frequency noise testing sensitivity can be realized.
Compared with prior art, the positive effect of the present invention：
1st, this programme is vibrated using the photoelectricity mixing of the light comb modulator based on the Fabry-Perot-type cavity with high-fineness
Device, the frequency noise of narrow linewidth laser to be measured is realized to the conversion of oscillator signal phase noise.Compared to delay interferometer
Method, it is not necessary to longer optical fiber, avoid caused by long optical fibers transmission loss, shot noise etc. frequency noise measurement spirit
The problem of sensitivity declines, the frequency noise of more narrow linewidth laser can be measured.In addition, this programme is shaken by measuring radio frequency
The phase noise for swinging signal measures the frequency noise of laser indirectly, therefore can distinguish the frequency noise and intensity of laser
Noise.
2nd, this programme, which employs the light comb modulator of the Fabry-Perot-type cavity with high-fineness, realizes the frequency of laser
The phase noise conversion of rate noise rf oscillation signal into optoelectronic hybrid oscillator, systematic survey sensitivity are limited only in photoelectricity
Device noise in oscillating loop, there is high measurement sensitivity.
3rd, this programme need not reduce system using the laser that line width is extremely narrow, frequency noise is extremely low as reference source
Complexity and cost.Meanwhile this method can measure the frequency noise of any long wavelength laser.
Brief description of the drawings
Fig. 1 is the present invention program schematic diagram；
Fig. 2 is the present invention program experimental result picture；
(a) it is A point spectral results figures in Fig. 1；
(b) it is B points electricity spectrum result figure in Fig. 1；
(c) it is B point phase noise result figures in Fig. 1；
(d) it is this programme laser frequency noise measurement and the contrast of commercial frequency noise-measuring instrument measured result
Figure.
Embodiment
The solution of the present invention is explained in further detail below in conjunction with the accompanying drawings.
The solution of the present invention principle is as shown in Figure 1.Testing laser device exports continuous wave laser, and is injected into light comb modulation
In device, the light comb modulator is made up of the electro-optic phase modulator both ends plating high-reflecting film of high bandwidth, the high-reflecting film shape at both ends
Into the Fabry-Perot-type cavity of a high-fineness.Because certain light loss be present in light comb modulator, it is therefore desirable to use and mix
The optical signal that doped fiber amplifier exports to light comb modulator is amplified.Optical signal after amplification is by the optocoupler of one 50%
Clutch is divided into two beams, and two-beam is fed in the standard single-mode fiber of different length, use two segment mark quasi-monomode fibers to be for
The photoelectricity mixing oscillating loop of twin nuclei is formed, is vibrated so as to suppress the secondary of oscillator signal in optoelectronic hybrid oscillator
Pattern, the length difference of two sections of optical fiber is bigger can more effectively to suppress spurious mode formula.General most long one section fiber lengths
No more than 10km, two sections of fiber lengths difference are typically more than 10 times.Two photodetectors will pass through standard single mode light respectively
Optical signal after fibre transmission is converted into electric signal, and the electric signal of two photodetector outputs is synthesized by 50% microwave power
Device carries out power combing.In addition to being divided into the twin nuclei that two-beam forms optoelectronic hybrid oscillator using fiber coupler,
Also realized using polarization twin nuclei, i.e., incident light is divided into by two polarization directions using fibre optic polarizing beam splitter, two partially
Shake direction polarization maintaining optical fibre of the light by two sections of different lengths and then by polarization beam combiner synthesis optical signal all the way, pass through
One photodetector can detect two paths of signals simultaneously, it is achieved thereby that the optoelectronic hybrid oscillator of twin nuclei, the knot
Structure visible document J.Wang, Y.Long, W.Tian, Z.Tai, and Y.Ze, " An Optical Domain Combined
Dual-Loop Optoelectronic Oscillator,”IEEE Photonics Technology Letters,19
(11),807-809,(2007).The microwave phase shifter of 50% microwave power synthesizer rear end can synthesize to 50% microwave power
The microwave signal of device output carries out phase shift.Due to photodetector output electric signal power it is smaller, therefore employ three it is low
The cascade of phase noise amplifier is amplified to it.Low phase noise amplifier has extremely low flicker noise, can reduce electricity
Influence of the amplifier to laser frequency noise testing sensitivity.Because the Fabry-Perot-type cavity presence in light comb modulator is more
Individual transmission peaks, so as to which the vibration of multiple patterns in photoelectricity mixing oscillating loop can be formed, therefore add in the loop one narrow
The electric bandpass filter of band suppresses to other oscillation modes.The output signal of low phase noise amplifier 3 enters one
Microwave directive coupler, microwave directive coupler have two output ports, and it is inclined that the microwave power of wherein most is used for direct current
The exchange input of device is put, microwave directive coupler separates sub-fraction microwave power and be used to measure its phase noise, and phase is made an uproar
The measurement of sound can be realized by the phase noise tester of commercialization.Direct current biasing device has two input ports and an output
Port, wherein input port include ac input end mouth and DC voltage port, and output port and the light comb of direct current biasing device are adjusted
The driving port of device processed is connected.The Dc bias that direct current biasing device is provided is as the electrooptic modulator in light comb modulator
Bias voltage, provided by additional adjustable direct-flow voltage regulation source.
After photoelectricity mixing oscillating loop, which is formed, to be vibrated, the output power single sideband phase noise of the radiofrequency signal of B points in structure chart 1
Power spectrum is represented by：
Wherein, H (f) is the transmission function of twin nuclei optoelectronic hybrid oscillator, and the form of embodying refers to document
H.Peng,C.Zhang,X.Xie,T.Sun,P.Guo,X.Zhu,L.Zhu,W.Hu,and Z.Chen,“Tunable DC-
60GHz RF Generation Utilizing a Dual-Loop Optoelectronic Oscillator Based on
Stimulated Brillouin Scattering,”Journal of Lightwave Technology,33(13),2707-
2715(2015)。WithIt is all kinds of photoelectric devices in laser frequency noise and photoelectricity mixing oscillating loop respectively
Introduced additional phase noise.The phase noise introduced discounting for image intensifer,Calculation formula represent such as
Under：
Wherein F is the noise coefficient sum of three low phase noise amplifiers, and k is Boltzmann constant, and T is room temperature, and e is
Electron charge, IphFor photodetector output photoelectric current, Z be amplifier impedance, NRINIntensity for testing laser device is made an uproar
Sound, b-1For the flicker noise coefficient sum of amplifier and photodetector, f is the frequency for deviateing oscillator signal carrier wave.
The introduced additional phase noise of oscillator signal of the frequency noise of laser to optoelectronic hybrid oscillator can represent
For：
WhereinIt is the modulation index of light comb modulator, V0It is the driving voltage of light comb modulator, this value is root
Determination when implementing according to specific experiment, VπIt is the half-wave voltage of light comb modulator, FSR is Fabry-Perot-type cavity in light comb modulator
Free Spectral Range.The light comb modulator used in this programme is Japanese firm OptoComb OptoComb WTEC-01-
25, according to the databook of official, during 10GHz modulating frequencies, its half-wave voltage modulated be 20V, Fabry during light comb is modulated-
The Free Spectral Range FSR of Perot cavity is 2.5GHz.Sv(f) it is the frequency noise of narrow linewidth laser to be measured.Work as optoelectronic oscillation
When the phase noise for the rf oscillation signal that device is formed is leading by the frequency noise of testing laser device, counter it can release to be measured sharp
The frequency noise of light device is：
In order to verify the validity of the program, experiment compares this programme and commodity laser frequency noise measuring instrument is surveyed
Measure the frequency noise measurement result of same testing laser device.In an experiment, the wavelength of testing laser device is 1550nm, and power is
17dBm, the radio-frequency driven power of light comb modulator are 17dBm, and the fiber lengths of use are respectively 500 meters and 2000 meters, electric band
The centre frequency of bandpass filter is 10GHz, and with a width of 1GHz, the gain of three low phase noise amplifiers is 15dB.Experiment
It is as shown in Figure 2 to test obtained result.Fig. 2 (a) illustrates the spectrum of A points in structure chart 1, and the spectrum is on testing laser device ripple
There is symmetrical optical sideband centered on length.Fig. 2 (b) illustrates the electricity spectrum of B points in structure chart 1, and the centre frequency of electricity spectrum is
10GHz.Fig. 2 (c) illustrates the phase noise result of B points rf oscillation signal in structure chart 1, and the frequency deviation range of measurement is
100Hz to 10MHz, meanwhile, the Johnson noise background of photodetector, the thermal noise of low phase noise amplifier are given in figure
The additional phase noise background of background and low phase noise amplifier.These Noise Backgrounds will limit the survey of the measurement scheme
Measure sensitivity.Dotted line in Fig. 2 (d) illustrates the frequency by the anti-testing laser device released of the phase noise surveyed in Fig. 2 (c)
Rate noise measurement, while curve shown in solid is illustrated and made an uproar using the commercial laser frequency of Japanese SYCAUTS companies
The frequency noise measurement result for the testing laser device that sounding measuring appratus obtains.The frequency of contrast this programme and commercial measuring instrument is made an uproar
Sound measurement result, it can be found that this programme can realize effective measurement to laser frequency noise.
Implement to be merely illustrative of the technical solution of the present invention rather than be limited above, the ordinary skill people of this area
Technical scheme can be modified by member or equivalent substitution, without departing from the spirit and scope of the present invention, this hair
Bright protection domain should be to be defined described in claims.
Claims (10)
1. a kind of laser frequency noise measuring method, it is characterised in that using testing laser device as being based on light comb modulator institute
The light source of the optoelectronic hybrid oscillator of structure, then measure the phase noise of rf oscillation signal in the optoelectronic hybrid oscillator；
The frequency noise of testing laser device is obtained according to the phase noise.
2. the method as described in claim 1, it is characterised in that the optoelectronic hybrid oscillator mixes for the photoelectricity of a twin nuclei
Co oscillation device, it includes a light comb modulator, and the output end of the light comb modulator connects through a fiber amplifier and a photo-coupler
Connect, an output end of the photo-coupler connects one section of first single-mode fiber, and the output signal of first single-mode fiber is through one first
Photodetector is converted to electric signal input microwave power synthesizer；Another output end of the photo-coupler connects one section of second list
Mode fiber, the output signal of second single-mode fiber are converted to electric signal through one second photodetector and input microwave power conjunction
Grow up to be a useful person；The output end of the microwave power coupler is successively through microwave phase shifter, the first low phase noise amplifier, electric bandpass filtering
Microwave directive coupler is inputted after device；One output end of the microwave directive coupler is used to connect phase noise tester, another
Output end connects the ac voltage input mouth of direct current biasing device；The output port of the direct current biasing device and the light comb modulator
Drive port connection.
3. method as claimed in claim 2, it is characterised in that the electric bandpass filter and the microwave directive coupler it
Between be provided with the second low phase noise amplifier, the 3rd low phase noise amplifier；The fiber lengths of first single-mode fiber are
More than 10 times of the fiber lengths of second single-mode fiber.
4. the method as described in claim 1, it is characterised in that the phase noise obtains the frequency noise of testing laser deviceWherein, β is the modulation index of light comb modulator, and FSR is method cloth in light comb modulator
In-Free Spectral Range of Perot cavity,H (f) is optoelectronic hybrid oscillator
Transmission function,For the introduced additional phase noise of all kinds of photoelectric devices in optoelectronic hybrid oscillator, testing laser device
The introduced additional phase noise of oscillator signal of the frequency noise to optoelectronic hybrid oscillator
5. the method as described in claim 1, it is characterised in that the optoelectronic hybrid oscillator is the light of a polarization twin nuclei
Electric mixer oscillator, it includes a light comb modulator, and the output end of the light comb modulator is through a fiber amplifier and a polarization point
Beam device connects, and an output end of the polarization beam apparatus connects one section of first polarization maintaining optical fibre, the output signal of first polarization maintaining optical fibre
Electric signal input polarization bundling device is converted to through one first photodetector；Another output end of the polarization beam apparatus connects one section
Second polarization maintaining optical fibre, the output signal of second polarization maintaining optical fibre are converted to electric signal through one second photodetector and input the polarization
Bundling device；The output end of the polarization beam combiner is successively through microwave phase shifter, the first low phase noise amplifier, electric bandpass filter
After input microwave directive coupler；One output end of the microwave directive coupler is used to connect phase noise tester, another defeated
Go out the ac voltage input mouth of end connection direct current biasing device；The drive of the output port of the direct current biasing device and the light comb modulator
Moved end mouth connection.
6. method as claimed in claim 5, it is characterised in that the electric bandpass filter and the microwave directive coupler it
Between be provided with the second low phase noise amplifier, the 3rd low phase noise amplifier.
7. the method as described in claim 5 or 6, it is characterised in that the fiber lengths of first polarization maintaining optical fibre are described the
More than 10 times of the fiber lengths of two polarization maintaining optical fibres.
8. a kind of laser frequency noise measurement system, it is characterised in that including a light comb modulator, the light comb modulator is used for
The laser of laser to be measured output is modulated, the output end of the light comb modulator is through a fiber amplifier and a photo-coupler
Connection, an output end of the photo-coupler connect one section of first single-mode fiber, and the output signal of first single-mode fiber is through one the
One photodetector is converted to electric signal input microwave power synthesizer；Another output end of the photo-coupler connects one section second
Single-mode fiber, the output signal of second single-mode fiber are converted to electric signal through one second photodetector and input the microwave power
Synthesizer；The output end of the microwave power coupler is filtered through microwave phase shifter, the first low phase noise amplifier, electric band logical successively
Microwave directive coupler is inputted after ripple device；One output end of the microwave directive coupler is used to connect phase noise tester, separately
One output end connects the ac voltage input mouth of direct current biasing device；The output port of the direct current biasing device and the light comb modulator
Driving port connection.
9. a kind of laser frequency noise measurement system, it is characterised in that including a light comb modulator, the light comb modulator is used for
The laser of laser to be measured output is modulated, the output end of the light comb modulator is through a fiber amplifier and a polarization beam splitting
Device connects, and an output end of the polarization beam apparatus connects one section of first polarization maintaining optical fibre, the output signal warp of first polarization maintaining optical fibre
One first photodetector is converted to electric signal input polarization bundling device；Another output end connection one section of the polarization beam apparatus the
Two polarization maintaining optical fibres, the output signal of second polarization maintaining optical fibre are converted to electric signal through one second photodetector and input polarization conjunction
Beam device；The output end of the polarization beam combiner is successively after microwave phase shifter, the first low phase noise amplifier, electric bandpass filter
Input microwave directive coupler；One output end of the microwave directive coupler is used to connect phase noise tester, another output
The ac voltage input mouth of end connection direct current biasing device；The driving of the output port of the direct current biasing device and the light comb modulator
Port connects.
10. system as claimed in claim 8 or 9, it is characterised in that the electric bandpass filter and the microwave directional couple
The second low phase noise amplifier, the 3rd low phase noise amplifier are provided between device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710946289.XA CN107727367B (en) | 2017-10-12 | 2017-10-12 | Laser frequency noise measurement method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710946289.XA CN107727367B (en) | 2017-10-12 | 2017-10-12 | Laser frequency noise measurement method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107727367A true CN107727367A (en) | 2018-02-23 |
| CN107727367B CN107727367B (en) | 2019-12-10 |
Family
ID=61210993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710946289.XA Active CN107727367B (en) | 2017-10-12 | 2017-10-12 | Laser frequency noise measurement method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107727367B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110034758A (en) * | 2019-03-11 | 2019-07-19 | 北京大学 | A kind of injection locking millimeter wave divider and its dividing method based on self-oscillation optical frequency com |
| CN110398292A (en) * | 2019-07-11 | 2019-11-01 | 北京大学 | A kind of the frequency comb clock shake measuring method and system of high sensitivity |
| CN111256955A (en) * | 2020-01-19 | 2020-06-09 | 北京理工大学 | Optical coherent system performance evaluation method based on laser frequency noise spectrum |
| CN111678583A (en) * | 2020-06-17 | 2020-09-18 | 珠海任驰光电科技有限公司 | Optical fiber vibration measuring device and method for improving light source noise |
| CN111786674A (en) * | 2020-07-09 | 2020-10-16 | 北京大学 | Analog bandwidth expansion method and system for analog-to-digital conversion system |
| CN113804283A (en) * | 2021-09-15 | 2021-12-17 | 中国人民解放军国防科技大学 | System and method for testing phase noise of interference type optical fiber hydrophone |
| CN118392326A (en) * | 2024-04-25 | 2024-07-26 | 北京大学长三角光电科学研究院 | Noise measuring device and method for single-frequency laser |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1701186A1 (en) * | 2005-03-08 | 2006-09-13 | Agilent Technologies, Inc. | Electro-optic delay line discriminator |
| CN101425655A (en) * | 2007-10-31 | 2009-05-06 | 中国科学院半导体研究所 | Apparatus for distributed feedback optical fiber laser frequency modulation and denoising |
| CN101483435A (en) * | 2008-01-08 | 2009-07-15 | 北京大学 | Dual circuit frequency synthesizer and tuning method thereof |
| CN102183362A (en) * | 2011-03-22 | 2011-09-14 | 浙江大学 | System and method for testing laser frequency noise power spectrum density based on Mach-Zehnder interferometer |
| CN102353963A (en) * | 2011-07-15 | 2012-02-15 | 于晋龙 | Distance measuring system for optical domain based dual-loop optoelectronic oscillators |
| CN102353523A (en) * | 2011-06-24 | 2012-02-15 | 中国科学院上海光学精密机械研究所 | Measuring device of noise characteristics of laser |
| CN102692314A (en) * | 2011-03-22 | 2012-09-26 | 浙江大学 | Apparatus and method for testing power spectral density of frequency noise of laser based on fiber resonator |
| CN103575511A (en) * | 2013-11-06 | 2014-02-12 | 湖南工学院 | Device and method for measuring relative intensity noise of laser |
| CN103983428A (en) * | 2014-06-05 | 2014-08-13 | 中国科学技术大学 | Method for measuring full-fiber pulsed laser ASE (amplified spontaneous emission) noise |
| US8885678B1 (en) * | 2012-05-24 | 2014-11-11 | Redfern Integrated Optics, Inc. | Ultra-low frequency noise external cavity semiconductor laser with integrated waveguide grating and modulation section electronically stabilized by dual frequency feedback control circuitry |
| CN104459360A (en) * | 2014-12-18 | 2015-03-25 | 南京航空航天大学 | Microwave source phase noise test method and device based on microwave photon mixing technology |
| CN104767562A (en) * | 2015-04-02 | 2015-07-08 | 南京航空航天大学 | Microwave source phase noise measuring device and method based on microwave photon technology |
| CN105259724A (en) * | 2015-11-09 | 2016-01-20 | 中国科学院上海光学精密机械研究所 | Optical frequency comb repetition frequency divider based on optical fiber interferometer |
| CN105651492A (en) * | 2016-02-29 | 2016-06-08 | 武汉理工大学 | Laser line width measuring system and method based on electro-optic modulator and adjustable radio source |
| CN106092520A (en) * | 2016-08-02 | 2016-11-09 | 中国电子科技集团公司第三十八研究所 | The measurement apparatus of Distributed Feedback Laser frequency noise and method |
| CN106159639A (en) * | 2015-04-13 | 2016-11-23 | 北京大学 | A kind of broad tuning optoelectronic hybrid oscillator and microwave signal generate method |
| CN106341182A (en) * | 2016-09-20 | 2017-01-18 | 浙江大学 | Microwave source phase noise measurement device based on optical carrier radio frequency link |
| CN106525256A (en) * | 2016-11-25 | 2017-03-22 | 威海北洋光电信息技术股份公司 | Narrow linewidth laser device phase noise measurement device and method |
-
2017
- 2017-10-12 CN CN201710946289.XA patent/CN107727367B/en active Active
Patent Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1701186A1 (en) * | 2005-03-08 | 2006-09-13 | Agilent Technologies, Inc. | Electro-optic delay line discriminator |
| CN101425655A (en) * | 2007-10-31 | 2009-05-06 | 中国科学院半导体研究所 | Apparatus for distributed feedback optical fiber laser frequency modulation and denoising |
| CN101483435A (en) * | 2008-01-08 | 2009-07-15 | 北京大学 | Dual circuit frequency synthesizer and tuning method thereof |
| CN102183362A (en) * | 2011-03-22 | 2011-09-14 | 浙江大学 | System and method for testing laser frequency noise power spectrum density based on Mach-Zehnder interferometer |
| CN102692314A (en) * | 2011-03-22 | 2012-09-26 | 浙江大学 | Apparatus and method for testing power spectral density of frequency noise of laser based on fiber resonator |
| CN102353523A (en) * | 2011-06-24 | 2012-02-15 | 中国科学院上海光学精密机械研究所 | Measuring device of noise characteristics of laser |
| CN102353963A (en) * | 2011-07-15 | 2012-02-15 | 于晋龙 | Distance measuring system for optical domain based dual-loop optoelectronic oscillators |
| US8885678B1 (en) * | 2012-05-24 | 2014-11-11 | Redfern Integrated Optics, Inc. | Ultra-low frequency noise external cavity semiconductor laser with integrated waveguide grating and modulation section electronically stabilized by dual frequency feedback control circuitry |
| CN103575511A (en) * | 2013-11-06 | 2014-02-12 | 湖南工学院 | Device and method for measuring relative intensity noise of laser |
| CN103983428A (en) * | 2014-06-05 | 2014-08-13 | 中国科学技术大学 | Method for measuring full-fiber pulsed laser ASE (amplified spontaneous emission) noise |
| CN104459360A (en) * | 2014-12-18 | 2015-03-25 | 南京航空航天大学 | Microwave source phase noise test method and device based on microwave photon mixing technology |
| CN104767562A (en) * | 2015-04-02 | 2015-07-08 | 南京航空航天大学 | Microwave source phase noise measuring device and method based on microwave photon technology |
| CN106159639A (en) * | 2015-04-13 | 2016-11-23 | 北京大学 | A kind of broad tuning optoelectronic hybrid oscillator and microwave signal generate method |
| CN105259724A (en) * | 2015-11-09 | 2016-01-20 | 中国科学院上海光学精密机械研究所 | Optical frequency comb repetition frequency divider based on optical fiber interferometer |
| CN105651492A (en) * | 2016-02-29 | 2016-06-08 | 武汉理工大学 | Laser line width measuring system and method based on electro-optic modulator and adjustable radio source |
| CN106092520A (en) * | 2016-08-02 | 2016-11-09 | 中国电子科技集团公司第三十八研究所 | The measurement apparatus of Distributed Feedback Laser frequency noise and method |
| CN106341182A (en) * | 2016-09-20 | 2017-01-18 | 浙江大学 | Microwave source phase noise measurement device based on optical carrier radio frequency link |
| CN106525256A (en) * | 2016-11-25 | 2017-03-22 | 威海北洋光电信息技术股份公司 | Narrow linewidth laser device phase noise measurement device and method |
Non-Patent Citations (4)
| Title |
|---|
| CHIEN-CHUNG CHEN 等: "Frequency noise measurement of diode-pumped Nd:YAG ring lasers", 《IEEE PHOTONICS TECHNOLOGY LETTERS》 * |
| HUANFA PENG 等: "Tunable DC-60 GHz RF Generation Utilizing a Dual-Loop Optoelectronic Oscillator Based on Stimulated Brillouin Scattering", 《JOURNAL OF LIGHTWAVE TECHNOLOGY》 * |
| JIANG YANG 等: "An Optical Domain Combined Dual-Loop Optoelectronic Oscillator", 《IEEE PHOTONICS TECHNOLOGY LETTERS》 * |
| 胡永奇 等: "利用全光纤环形谐振器实现对单频激光器频率噪声的抑制", 《中国激光》 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110034758A (en) * | 2019-03-11 | 2019-07-19 | 北京大学 | A kind of injection locking millimeter wave divider and its dividing method based on self-oscillation optical frequency com |
| CN110398292A (en) * | 2019-07-11 | 2019-11-01 | 北京大学 | A kind of the frequency comb clock shake measuring method and system of high sensitivity |
| CN111256955A (en) * | 2020-01-19 | 2020-06-09 | 北京理工大学 | Optical coherent system performance evaluation method based on laser frequency noise spectrum |
| CN111678583A (en) * | 2020-06-17 | 2020-09-18 | 珠海任驰光电科技有限公司 | Optical fiber vibration measuring device and method for improving light source noise |
| CN111678583B (en) * | 2020-06-17 | 2022-02-18 | 珠海任驰光电科技有限公司 | Optical fiber vibration measuring device and method for improving light source noise |
| CN111786674A (en) * | 2020-07-09 | 2020-10-16 | 北京大学 | Analog bandwidth expansion method and system for analog-to-digital conversion system |
| CN111786674B (en) * | 2020-07-09 | 2022-08-16 | 北京大学 | Analog bandwidth expansion method and system for analog-to-digital conversion system |
| CN113804283A (en) * | 2021-09-15 | 2021-12-17 | 中国人民解放军国防科技大学 | System and method for testing phase noise of interference type optical fiber hydrophone |
| CN113804283B (en) * | 2021-09-15 | 2023-10-20 | 中国人民解放军国防科技大学 | Interference type optical fiber hydrophone phase noise testing system and method |
| CN118392326A (en) * | 2024-04-25 | 2024-07-26 | 北京大学长三角光电科学研究院 | Noise measuring device and method for single-frequency laser |
| CN118392326B (en) * | 2024-04-25 | 2024-10-22 | 北京大学长三角光电科学研究院 | Noise measuring device and method for single-frequency laser |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107727367B (en) | 2019-12-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107727367A (en) | A kind of laser frequency noise measuring method and system | |
| Hao et al. | Recent advances in optoelectronic oscillators | |
| Yao | Microwave photonic sensors | |
| Li et al. | A wideband frequency tunable optoelectronic oscillator incorporating a tunable microwave photonic filter based on phase-modulation to intensity-modulation conversion using a phase-shifted fiber Bragg grating | |
| Zou et al. | Microwave frequency measurement based on optical power monitoring using a complementary optical filter pair | |
| Morozov et al. | Characterization of stimulated Mandelstam-Brillouin scattering spectrum using a double-frequency probing radiation | |
| CN104165756B (en) | High sensitivity light vector Network Analyzer based on stimulated Brillouin scattering | |
| CN103411675B (en) | Excited Brillouin scattering gain spectrum measuring method and system thereof | |
| CN104113378A (en) | Apparatus and method capable of tuning microwave signal source of semiconductor optical amplifier | |
| CN106027153A (en) | Method for generating 60GHz millimeter waves based on new double-sideband Mach-Zehnder modulator | |
| CN106093598A (en) | A kind of electromagnetic signal characteristic measuring system and method | |
| US20220260486A1 (en) | Chirped laser dispersion spectrometer and method | |
| Morozov et al. | Poly-harmonic Analysis of Raman and Mandelstam-Brillouin Scatterings and Bragg Reflection Spectra | |
| CN108344408A (en) | Angular velocity measurement device based on tunable optical electrical oscillator | |
| US5256968A (en) | Measurement of high-frequency electrical signals by electro-optical effect | |
| CN102594544B (en) | Spectral broadening device for chaotic laser signals and method thereof | |
| Wang et al. | Photonic microwave frequency measurement with improved resolution based on bandwidth-reduced stimulated Brillouin scattering | |
| JP2012080013A (en) | Light source device and imaging apparatus using same | |
| Xu et al. | Chip-scale Brillouin instantaneous frequency measurement by use of one-shot frequency-to-power mapping based on lock-in amplification | |
| JP2000275107A (en) | Method for measuring laser frequency, method for controlling laser frequency and laser beam generator | |
| RU2721739C1 (en) | Fiber-optic instantaneous frequency measuring system of multiple microwave signals | |
| Lopez-Gil et al. | Simple baseband method for the distributed analysis of Brillouin phase-shift spectra | |
| Marini et al. | Enhanced-performance fibre Brillouin ring laser for Brillouin sensing applications | |
| Carlson et al. | Photonic-chip supercontinuum with tailored spectra for precision frequency metrology | |
| JP3408789B2 (en) | Method and apparatus for measuring backscattered light |
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 |