CN107508137B - A kind of microcavity thermal effect compensation method during Ke Er light comb orphan's mode locking - Google Patents
A kind of microcavity thermal effect compensation method during Ke Er light comb orphan's mode locking Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
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Abstract
The invention discloses a kind of microcavity thermal effect compensation methods during Ke Er light comb orphan's mode locking, by introducing auxiliary laser in optical microcavity, the fuel factor during orphan's mode locking is made up using auxiliary laser heating, thermal equilibrium state during holding optical microcavity orphan mode locking, every time orphan's mode locking in optical microcavity can be realized with certainty, orphan's mode locking process in microcavity is enormously simplified, existing Ke Er light comb orphan mode locking process randomness strong, poor reliability and the problems such as vulnerable to disturbance are avoided；Simultaneously, by the optical power for monitoring Ke Er light comb, feedback control auxiliary laser wavelength, orphan's mode-lock status can exist with long-time stable, and orphan's mode-lock status by external interference after being lost, orphan's mode-lock status can be automatically restored to, the stability of orphan's mode-lock status in optical microcavity is greatly improved by control auxiliary laser.
Description
Technical field
The invention belongs to technical field of photo communication, more specifically, are related to during a kind of Ke Er light comb orphan's mode locking
Microcavity thermal effect compensation method.
Background technique
Optical frequency com (abbreviation frequency comb) can provide equally spaced frequency tag, provide for spectroscopy and accurate measurement
Revolutionary tool.Frequency comb is all in precision spectroscopy, celestial spectrum calibration, super steady microwave oscillator, high speed optical communication etc.
It is multi-field to suffer from biggish application prospect.
Currently, most of frequency comb is generated based on ultrashort pulse laser, often volume is big, structure is multiple for this kind of equipment
It is miscellaneous, expensive, and can not integrate.In recent years, with the development of technology, occur a kind of based on ultra high quality factor
The brand-new scheme of (abbreviation high q-factor) optical microcavity generation frequency comb.This scheme is shaken using the Ke Er parameter in optical microcavity
Effect generates frequency comb, abbreviation Ke Er light comb.
Compared with traditional ultrashort pulse laser, the light comb scheme based on high q-factor optical microcavity has small in size, structure
Simply, at low cost, being capable of single chip integrated advantage.Therefore, the Ke Er frequency comb scheme based on high q-factor light microcavity is the following production
The desired technical of raw frequency comb, be expected to be widely used in precision spectroscopy, celestial spectrum calibration, super steady microwave oscillator,
The numerous areas such as high speed optical communication.
Currently, the mode-locked regime of Ke Er light comb is mainly orphan's mode locking, still, due to Ke Er light comb orphan's mode locking mistake
The influence of microcavity fuel factor in journey realizes that orphan's mode locking has very big challenge.Realize that orphan's mode locking, pumping laser wavelength need
To enter the red detuning region of optical microcavity resonance region, still, due to the influence of fuel factor, the red detuning region of optical microcavity is
It is unstable, when pumping laser enters red detuning area from blue detuning area, the resonance peak of optical microcavity can quick blue shift, pumping is sharp
Light removes the red detuning area of optical microcavity resonance region quickly.
Currently, the scheme of microcavity fuel factor during orphan's mode locking is overcome mainly to have fast wavelength sweep and premodulated pumping
Laser.Both schemes can make pumping wavelength enter red detuning area's generation orphan, still, orphan's mode locking of both schemes
Process has randomness, poor reliability and the problems such as vulnerable to disturbance, and more complicated, it is difficult to apply in practice.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide microcavitys during a kind of Ke Er light comb orphan's mode locking
Thermal effect compensation method, while overcoming microcavity fuel factor, avoid existing Ke Er light comb orphan mode locking process randomness it is strong, can
By property difference and vulnerable to disturbance the problems such as, thus rapidly, deterministically realize orphan's mode locking.
For achieving the above object, microcavity thermal effect compensation method during Ke Er light comb orphan's mode locking of the present invention,
It is characterized in that, comprising the following steps:
(1), the auxiliary laser for compensating microcavity fuel factor during orphan's mode locking is first generated, the inclined of auxiliary laser is adjusted
Polarization state, that is, Polarization Control, by the auxiliary laser after Polarization Control, by a microcavity coupler opposite direction, (opposite pumping laser is in chamber
For the interior direction of propagation) it is coupled into optical microcavity；
(2), the pumping laser for generating Ke Er light comb in optical microcavity is then generated, the polarization of pumping laser is adjusted
Pumping laser after Polarization Control is coupled into optical microcavity by another microcavity coupler forward direction by state, that is, Polarization Control；
Wherein, pump laser power is higher than optical microcavity parametric oscillation threshold power, and auxiliary laser power is not less than pumping
Laser power；
(3) auxiliary laser wavelength or power are adjusted, pumping laser is enable to be smoothly transitted into the red detuning state of microcavity；
(4), it keeps auxiliary laser wavelength and power constant, scans pumping laser wavelength, realize orphan's mode locking；
(5), the optical power of Ke Er light comb is monitored, feedback control auxiliary laser wavelength: when the reduction of Ke Er light comb power, increased
Auxiliary laser wavelength reduces auxiliary laser wavelength, when the increase of Ke Er light comb power to stablize orphan's mode-lock status.
The object of the present invention is achieved like this:
Microcavity thermal effect compensation method during Ke Er light comb orphan's mode locking of the present invention, it is auxiliary by being introduced in optical microcavity
Laser is helped, makes up the fuel factor during orphan's mode locking using auxiliary laser heating, during keeping optical microcavity orphan mode locking
Thermal equilibrium state can realize orphan's mode locking in optical microcavity every time with certainty, enormously simplify orphan's mode locking mistake in microcavity
Journey avoids existing Ke Er light comb orphan mode locking process randomness strong, poor reliability and the problems such as vulnerable to disturbance；Meanwhile passing through
The optical power of Ke Er light comb, feedback control auxiliary laser wavelength are monitored, orphan's mode-lock status can exist with long-time stable, and
Orphan's mode-lock status can automatically restore to orphan's mode-lock status, pole by control auxiliary laser after being lost by external interference
The stability of orphan's mode-lock status in optical microcavity is improved greatly.
Detailed description of the invention
Fig. 1 is using a kind of specific embodiment structural schematic diagram of optical microcavity Ke Er light comb generation device of the invention；
Fig. 2 is a kind of specific implementation process of microcavity thermal effect compensation method during Ke Er light comb orphan's mode locking of the present invention
Figure；
Fig. 3 is the resonance peak schematic diagram at auxiliary laser and pumping laser wavelength；
Fig. 4 is that experiment measures the Ke Er light comb spectrogram with smoothed envelope；
Fig. 5 is the output light spectrogram that experiment measures microcavity when in the presence/absence of auxiliary laser；
Fig. 6 is output end Ke Er light comb, pumping laser and auxiliary laser changed power tendency chart；
Fig. 7 is the reliability schematic diagram of multiple orphan's mode locking；
Fig. 8 is the stability schematic diagram of orphan's mode-lock status.
Specific embodiment
A specific embodiment of the invention is described with reference to the accompanying drawing, preferably so as to those skilled in the art
Understand the present invention.Requiring particular attention is that in the following description, when known function and the detailed description of design perhaps
When can desalinate main contents of the invention, these descriptions will be ignored herein.
Fig. 1 is using a kind of specific embodiment structural schematic diagram of optical microcavity Ke Er light comb generation device of the invention.
In the present embodiment, as shown in Figure 1, optical microcavity Ke Er light comb generation device includes pumping laser module 1, optics
Microcavity module 2, auxiliary laser module 3 and output detection module 4.In the present embodiment, pumping laser module 1 and auxiliary laser module
3 structures are identical, separately include tunable laser 101,301, Polarization Controller (PC) 102,302, power amplifier (EDFA)
103,303 and fiber bragg grating (FBG) 104,304 and optical fiber circulator 105,305, tunable laser 101,301
The adjustable continuous light, that is, pumping laser of output wavelength, auxiliary laser, the input power amplifier after Polarization Controller 102,302
103,303 amplification is sent into fiber bragg grating (FBG) by optical fiber circulator 105,305 and is filtered out with (the amplification of outer ASE noise
Device spontaneous emission noise, that is, Amplifier Spontaneousemission Noise, abbreviation ASE noise) after, then pass through optical fiber
Circulator 105,305 is sent into optical microcavity module 2.
Optical microcavity module 2 includes optical microcavity 201 and couple prism 202,203, wherein couple prism is as microcavity
Coupler.Amplified laser includes pumping laser and auxiliary laser, is coupled by respective couple prism 202,203
Optical microcavity 201.In the present embodiment, optical microcavity 201 has a temperature control modules TEC, passes through temperature control modules
Temperature is kept constant, in the present embodiment, 201 temperature change of optical microcavity is less than 0.1 degree Celsius.
Exporting detection module 4 includes two optical fiber circulators 401,402, photo-coupler 403,404, spectrometer (OSA)
405, optical band pass filter (OBPF) 406, fiber bragg grating (FBG) 407 and power meter (PM) 408,409,410,.Light
Fine circulator 401 is placed between pumping laser module 1 and optical microcavity module 2, the pumping laser that pumping laser module 1 generates
Optical microcavity module 2 is arrived after optical fiber circulator 401, meanwhile, the auxiliary laser from optical microcavity module 2 is extracted, function is given
Rate meter (PM) 408, for monitoring the optical power of auxiliary laser；Equally, optical fiber circulator 402 be placed in auxiliary laser module 3 and
Between optical microcavity module 2, the auxiliary laser that auxiliary laser module 3 generates arrives optical microcavity mould after optical fiber circulator 402
Block 2, meanwhile, the output laser of the pumping laser from optical microcavity module 2 and Ke Er light comb is extracted, then photo-coupler 403
It is divided into two-way, is sent into spectrometer (OSA) 405 all the way, output laser spectrum is observed by optical frequency instrument, if currently exporting laser
Spectrum has smoothed envelope, illustrates to have completed orphan's mode locking, stops scanning, otherwise continues to scan on wavelength, and another way is sent into another
One photo-coupler 404 is further divided into two-way, filters out the interference outside pumping laser by optical band pass filter (OBPF) 406 all the way, obtains
The pumping laser arrived is sent into power meter 409 and carries out power measurement, while another way is filtered by fiber bragg grating (FBG) 407
Interference in addition to Ke Er grating, obtained Cole's light comb are sent into power meter (PM) 410 and carry out power measurement.Wherein, Ke Er is monitored
The optical power of light comb controls the wavelength of laser-assisted as feedback signal, stablizes orphan's mode-lock status in microcavity.
The present invention is improved for randomness caused by orphan's mode locking process fuel factor in optical microcavity and unstability,
Fig. 2 is a kind of specific implementation flow chart of microcavity thermal effect compensation method during Ke Er light comb orphan's mode locking of the present invention.Such as Fig. 2 institute
Show, microcavity thermal effect compensation method during Ke Er light comb orphan's mode locking of the present invention the following steps are included:
S201: selection auxiliary, pumping laser wavelength:
According to the Q value characteristic of optical microcavity, auxiliary laser and pumping laser wavelength are selected；It is required that at auxiliary laser wavelength
Microcavity Q value meets this condition not less than the Q value at pumping laser wavelength, and auxiliary laser could effective compensation pumping laser orphan
Fuel factor during sub- mode locking.
S202: auxiliary laser is generated:
Auxiliary laser is generated, input EDFA (erbium-doped fiber amplifier) is put after adjusting auxiliary laser polarization state, that is, Polarization Control
Greatly, auxiliary laser power PAux.It needs to be determined according to the Q value at auxiliary laser wavelength and at pumping laser wavelength, PAux.Calculating
Formula are as follows:
Wherein, QAuxAnd QPumpIt is the Q value at auxiliary laser wavelength and at pumping laser wavelength respectively, η is power adjustment system
Number.Power regulation factor will meetPpumpIt is pumping light power, needs to meet:
Wherein, n0For optical microcavity refractive index, VeffFor the equivalent mode volume of optical microcavity, λLIndicate optical microcavity resonance
The wavelength at peak, n2For the nonlinear refractive index of optical microcavity, Q is the quality factor of optical microcavity.Amplified auxiliary laser is defeated
Enter FBG to filter out with outer ASE noise.
S203: to optical microcavity coupling input auxiliary laser:
By Polarization Control and amplified auxiliary laser, by couple prism, reversely (opposite pumping laser is in intracavitary propagation
For direction) input optical microcavity.
S204: pumping laser is generated:
Pumping laser is generated, input EDFA (erbium-doped fiber amplifier) is put after adjusting pumping laser polarization state, that is, Polarization Control
Greatly, setting pump laser power, which meets, is greater than parametric oscillation threshold value and is less than auxiliary laser power.
S205: to optical microcavity coupling input pumping laser:
By Polarization Control and amplified pumping laser, optical microcavity is inputted by couple prism forward direction, adjustment auxiliary swashs
Optical wavelength or power enable pumping laser to be smoothly transitted into the red detuning state of microcavity.
Auxiliary laser and pumping laser are successively successively coupled into optical microcavity, and are avoided auxiliary using two-way to the scheme of biography
Help interference of the laser to pumping laser.
S206: keeping auxiliary laser wavelength and power constant, scans pumping laser wavelength:
It keeps auxiliary laser wavelength and power constant, scans pumping laser wavelength；In optical microcavity output end, pass through spectrum
Instrument observation output laser spectrum illustrates to have completed orphan's mode locking, stop if currently the spectrum of output laser has smoothed envelope
It only scans, otherwise continues to scan on wavelength.
Pumping laser can be in the entire resonance region scanning wavelength of optical microcavity (including blue detuning and red detuning area), and scans
Process will not destroy thermal equilibrium state in microcavity；In addition, can realize orphan's mode locking in optical microcavity every time with certainty.
S207: monitoring Ke Er light comb, feedback control auxiliary laser
After completing orphan's mode locking, by monitoring Ke Er light comb optical power, feedback control auxiliary laser wavelength realizes orphan's lock
Mould state produces time stable state.When the reduction of Ke Er light comb power, increase auxiliary laser wavelength；When Ke Er light comb power increase,
Reduce auxiliary laser wavelength.Using this feedback stability mechanism, orphan's mode-lock status can exist with long-time stable.And orphan
Mode-lock status can be automatically restored to orphan's mode-lock status, greatly be mentioned after being lost by external interference by control auxiliary laser
The stability of orphan's mode-lock status in high optical microcavity.
According to above step, orphan's mode locking in optical microcavity can be effectively realized.Compared to fast wavelength sweep or pumping
The schemes such as Laser Modulation, the present invention in, by introduce auxiliary laser compensated cavity internal heat effect, pumping laser length scanning can be made
General power remains relatively stable in microcavity in the process, and intracavitary optical power is in effectively blue detuning state, and entire microcavity can be kept
In thermal steady state.Therefore, pumping laser can exist in red detuning regional stability and wavelength is continuously adjustable.Intracavitary orphan's number
It can be a kind of determinant mechanism for realizing intracavitary orphan's mode locking by adjusting pumping laser flexibly to control.
In addition, in the present embodiment, pumping laser and auxiliary laser can be identical polarization state be also possible to it is mutually orthogonal
Polarization state.Pumping laser and auxiliary laser using it is two-way to biography by the way of, effectively auxiliary laser can be avoided to pumping laser
Interference.
Due to introducing the fuel factor during auxiliary laser compensates for intracavitary orphan's mode locking, microcavity is under orphan's mode-lock status
Stability obtained great promotion.By monitor output end Ke Er light comb optical power, feedback control auxiliary laser wavelength,
Enable to orphan's mode-lock status long-time stable.It, also can be automatic after losing orphan's mode-lock status and by external interference
It is restored to orphan's mode-lock status.Therefore, the present invention greatly improves the stability of optical microcavity orphan's mode locking.
Technical effect in order to better illustrate the present invention has carried out experimental verification using a specific embodiment.Light
It learns microcavity and uses silicon nitride optical microcavity, parameter are as follows: free spectrum width FSR=200GHz, quality factor q=1 × 106,
Specific refractivity n0=1.97,1.6 μm of equivalent mode field area2, resonance wavelengthL=1539nm, non-linear gain coefficient n2=2.6
×10-20m2/ W, second-order dispersion β2=-11 × 10-27。
In the present embodiment, selects pumping laser wavelength and auxiliary laser wavelength is respectively 1539nm and 1533nm.Fig. 3 is light
It is experimental measurements that microcavity, which is learned, assisting and pumping the resonance peak at two wavelength, orbicular spot, and solid line is quasi- by Lorentz
What conjunction obtained.Resonance peak bandwidth at pumping laser and auxiliary laser wavelength is 428.81MHz and 259.98MHz respectively.Setting
The EDFA Output optical power of pumping laser module and auxiliary laser module is 30.0dBm.Polarization Controller is adjusted, auxiliary laser is made
With the TM in pumping laser polarization state and waveguide00Mould is consistent.By Polarization Control and amplified laser input FBG and optical fiber ring
The bandpass filter of device composition, filters out with outer ASE noise.In the present embodiment, the bandwidth of FBG is 1nm.
Auxiliary laser and pumping laser are coupled into optical microcavity.In the present embodiment, using couple prism by laser from
Fiber coupling enters waveguide, then is coupled into optical microcavity by waveguide.Interval between waveguide and optical microcavity is 600nm.
In the present embodiment, auxiliary laser is coupled by length scanning by optical microcavity first, auxiliary laser is located at blue detuning at this time
State.Then, pumping laser is coupled by length scanning by optical microcavity, needs to adjust auxiliary laser wavelength at this time, makes
Pumping laser can be smoothly transitted into red detuning state.Auxiliary laser wavelength method of adjustment is, if pumping laser can not transition
To red detuning state, then increase auxiliary laser wavelength or power, until pumping laser is smoothly transitted into red detuning state.At this point,
Fixed auxiliary laser wavelength and power are constant.
Next length scanning is carried out to pumping laser.In the present embodiment, the step-length of pumping laser scanning is 0.4pm, is seen
Microcavity output light spectrum in spectrometer is examined, after there is smoothed envelope, stops length scanning, realizes the orphan of Ke Er light comb at this time
Mode locking.Fig. 4 is the Ke Er light comb spectrogram with smoothed envelope measured in experiment.
Effect in order to illustrate auxiliary laser in the present invention to thermal effect compensation during orphan's mode locking, in microcavity output end
During recording pumping laser length scanning, the changed power situation of Ke Er light comb, pumping laser and auxiliary laser, experiment knot
Structure is as shown in fig. 1.Left figure in Fig. 5 is the output spectrum of optical microcavity in no auxiliary laser；Right figure is that have auxiliary to swash
Light time, the output spectrum of optical microcavity.As can be seen that auxiliary laser can effectively make up the thermal effect during orphan's mode locking
It answers, the Lorentzian type so that output spectrum of optical microcavity is near the mark.Fig. 6 is the variation tendency of each section light optical power, from Fig. 6
In as can be seen that when pumping wavelength is gradually scanned into microcavity after pumping light power gradually reduce (intracavity power increase), auxiliary
Laser power incrementally increases (intracavity power reduction), and with respect to resonance peak blue shift occurs for auxiliary laser；Auxiliary laser is in microcavity at this time
Middle heating amount is gradually reduced, and pumping laser heating amount incrementally increases, but overall heat is kept constant in microcavity.When pumping swashs
After light reaches resonance peak bottom, continue to increase pumping laser wavelength, pumping laser enters red detuning state.At this point, output end pumps
Pu laser power incrementally increases (intracavity power reduction), and auxiliary laser power gradually reduces (intracavity power increase), correspondingly, pump
Heating amount of the Pu laser in microcavity gradually reduces, and heating amount of the auxiliary laser in microcavity incrementally increases, but intracavitary total
Heat is kept constant.So heat is flat during can effectively ensure that pumping laser orphan mode locking by introducing auxiliary laser heating
Weighing apparatus.
Influence in order to illustrate thermal effect compensation method of the present invention to orphan's mode locking validity has carried out 20 independent orphans
Sub- mode locking.Fig. 7 is the change curve that the Ke Er light comb power measured in experiment is scanned with pumping wavelength.It can be seen from figure 7 that
20 mode locking processes can successfully realize orphan's mode locking, this has absolutely proved orphan's mode locking process thermal effect compensation method of the present invention
Validity.
Promotion in order to illustrate the present invention to orphan's mode-lock status stability, by additional human interference, experimental verification is lonely
The stability of sub- mode-lock status.As shown in figure 8, I-IV is applied with four human interferences respectively, it is on pump laser respectively
Mechanical oscillation, acoustic vibration and acoustic vibration in mechanical oscillation, laser-assisted.Obviously, after by external interference, microcavity
Middle orphan's mode-lock status is lost；At this point, feedback control auxiliary laser wavelength, can be promptly restored to orphan's mode-lock status.
Microcavity thermal effect compensation method during Ke Er light comb orphan's mode locking of the present invention, can be according to different optical microcavity characteristics
Resonance wavelength similar in two Q values is selected, respectively as pumping laser and auxiliary laser wavelength.Pumping laser is set and auxiliary swashs
Optical power, pump laser power are higher than optical microcavity parametric oscillation threshold power, and auxiliary laser power is not less than pumping laser function
Rate.Pumping laser and auxiliary laser polarization state are adjusted, auxiliary laser and pumping laser are successively coupled into optical microcavity.Adjustment
Auxiliary laser is detuning with respect to the effective frequency of resonance peak frequency, and pumping laser is made smoothly to enter the red detuning area of microcavity；Scanning pumping
The wavelength of laser realizes Ke Er light comb orphan's mode locking；The optical power of Ke Er light comb is monitored, feedback control auxiliary laser wavelength is long
Time stablizes Ke Er light comb orphan's mode-lock status.
Although the illustrative specific embodiment of the present invention is described above, in order to the technology of the art
Personnel understand the present invention, it should be apparent that the present invention is not limited to the range of specific embodiment, to the common skill of the art
For art personnel, if various change the attached claims limit and determine the spirit and scope of the present invention in, these
Variation is it will be apparent that all utilize the innovation and creation of present inventive concept in the column of protection.
Claims (2)
1. a kind of microcavity thermal effect compensation method during Ke Er light comb orphan's mode locking, which comprises the following steps:
(1), the auxiliary laser for compensating microcavity fuel factor during orphan's mode locking is first generated, the polarization state of auxiliary laser is adjusted
That is Polarization Control, by the auxiliary laser after Polarization Control by the i.e. opposite pumping laser of coupled system opposite direction in intracavitary propagation side
Opposite direction for is coupled into optical microcavity；
(2), the pumping laser for generating Ke Er light comb in optical microcavity is then generated, adjusts the polarization state of pumping laser i.e.
Pumping laser after Polarization Control is coupled into optical microcavity by same coupled system forward direction by Polarization Control；
Wherein, pump laser power is higher than optical microcavity parametric oscillation threshold power, and auxiliary laser power is not less than pumping laser
Power, the microcavity Q value at auxiliary laser wavelength is not less than the microcavity Q value at pumping laser wavelength；
(3) auxiliary laser wavelength or power are adjusted, pumping laser is enable to be smoothly transitted into the red detuning state of microcavity；
(4), it keeps auxiliary laser wavelength and power constant, pumping laser wavelength is slowly scanned, until ladder occurs in pumping laser
The jump of type power, realizes orphan's mode locking；
(5), monitor the optical power of Ke Er light comb, feedback control auxiliary laser wavelength: when Ke Er optical power reduces, increase auxiliary swashs
Optical wavelength reduces auxiliary laser wavelength, when the increase of Ke Er optical power to stablize orphan's mode-lock status.
2. microcavity thermal effect compensation method according to claim 1, which is characterized in that auxiliary laser power PAux.Need root
It is determined according to the Q value at auxiliary laser wavelength and at pumping laser wavelength, PAux.Calculation formula are as follows:
Wherein, QAuxAnd QPumpIt is the Q value at auxiliary laser wavelength and at pumping laser wavelength respectively, η is power regulation factor, function
Rate regulation coefficient will meetPpumpIt is pumping light power, needs to meet:
Wherein, n0For optical microcavity refractive index, VeffFor the equivalent mode volume of optical microcavity, λLIndicate optical microcavity resonance peak
Wavelength, n2For the nonlinear refractive index of optical microcavity, Q is the quality factor of optical microcavity.
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| CN109119882A (en) * | 2018-09-30 | 2019-01-01 | 中国科学院西安光学精密机械研究所 | A kind of certainty soliton frequency comb generation system and method based on microcavity |
| CN109494559B (en) * | 2018-12-27 | 2020-12-04 | 上海交通大学 | Soliton optical frequency comb generation device and operation method |
| CN111987580B (en) * | 2019-05-21 | 2021-11-09 | 华为技术有限公司 | Method and system for generating single dissipative Kerr soliton pulse |
| CN111244741B (en) * | 2020-01-21 | 2021-08-17 | 中国科学院西安光学精密机械研究所 | Program-controlled micro-cavity single-soliton optical frequency comb generation system and method |
| CN111504190B (en) * | 2020-04-30 | 2021-05-25 | 天津大学 | Three-dimensional coordinate measuring device for correcting nonlinearity of frequency modulated continuous wave by Kerr optical comb |
| CN112670806B (en) * | 2020-12-17 | 2022-10-04 | 中国科学院西安光学精密机械研究所 | Frequency shift system and frequency shift method of microcavity soliton optical frequency comb |
| CN114336227B (en) * | 2021-12-27 | 2023-04-18 | 电子科技大学 | Microwave signal generating device based on low-distortion dissipative Kerr soliton |
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| EP2710694B1 (en) * | 2011-05-16 | 2018-07-04 | Oewaves, Inc. | Generation of single optical tone, rf oscillation signal and optical comb in a triple-oscillator device based on nonlinear optical resonator |
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| CN105428990B (en) * | 2015-12-15 | 2018-04-13 | 电子科技大学 | Certainty orphan's locked mode method of Ke Er light combs in optical microcavity |
| CN106505403B (en) * | 2016-12-05 | 2023-04-25 | 华南理工大学 | Optical feedback-based repetition frequency-adjustable optical frequency comb |
| US9891500B1 (en) * | 2017-01-05 | 2018-02-13 | City University Of Hong Kong | Systems and methods for optical frequency comb generation using a microring resonator |
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