CN113791513B - Optical frequency comb generation and detection system and method - Google Patents

Optical frequency comb generation and detection system and method Download PDF

Info

Publication number
CN113791513B
CN113791513B CN202110985079.8A CN202110985079A CN113791513B CN 113791513 B CN113791513 B CN 113791513B CN 202110985079 A CN202110985079 A CN 202110985079A CN 113791513 B CN113791513 B CN 113791513B
Authority
CN
China
Prior art keywords
frequency
mach
comb
zehnder modulator
optical
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.)
Active
Application number
CN202110985079.8A
Other languages
Chinese (zh)
Other versions
CN113791513A (en
Inventor
张博峰
赵刚
马维光
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanxi University
Original Assignee
Shanxi University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanxi University filed Critical Shanxi University
Priority to CN202110985079.8A priority Critical patent/CN113791513B/en
Publication of CN113791513A publication Critical patent/CN113791513A/en
Application granted granted Critical
Publication of CN113791513B publication Critical patent/CN113791513B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/35—Non-linear optics
    • G02F1/353—Frequency conversion, i.e. wherein a light beam is generated with frequency components different from those of the incident light beams
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/35—Non-linear optics
    • G02F1/3501—Constructional details or arrangements of non-linear optical devices, e.g. shape of non-linear crystals
    • G02F1/3503—Structural association of optical elements, e.g. lenses, with the non-linear optical device
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/35—Non-linear optics
    • G02F1/353—Frequency conversion, i.e. wherein a light beam is generated with frequency components different from those of the incident light beams
    • G02F1/354—Third or higher harmonic generation
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/35—Non-linear optics
    • G02F1/37—Non-linear optics for second-harmonic generation
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/54—Optical pulse train (comb) synthesizer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The invention belongs to the technical field of optics, and particularly relates to a system and a method for generating and detecting an optical frequency comb. In order to obtain an optical frequency comb with stable phase, high resolution and high speed, the generation and detection system of the optical frequency comb comprises a laser, a Mach-Zehnder modulator, an arbitrary waveform generator, a power amplifier, a detector and an FFT; the arbitrary waveform generator generates a modulation signal, the modulation signal is composed of radio frequency signals with unequal intervals, the radio frequency signals are amplified by a power amplifier and then input into the Mach-Zehnder modulator, the laser is connected with the optical signal input end of the Mach-Zehnder modulator, the output end of the Mach-Zehnder modulator is connected with the detector, and the output optical frequency comb is observed by FFT.

Description

Optical frequency comb generation and detection system and method
Technical Field
The invention belongs to the technical field of optics, and particularly relates to a system and a method for generating and detecting an optical frequency comb.
Background
The conventional optical frequency comb OFC is composed of comb teeth with equal frequency intervals in the frequency domain, and is equivalent to that thousands of continuous laser sources output simultaneously. The OFC as a light source has wide application in the fields of precise distance measurement, trace gas detection, frequency and time measurement and the like. Especially, the optical comb spectrum technology has the advantages of rapidness, wide spectrum, simultaneous detection of multiple gases and the like compared with the traditional laser spectrum technology. Whether based on mode-locked laser sources, nonlinear optical responses, or external modulations, produce comb teeth that are equally spaced in frequency. The detection of the optical comb is one of the key and difficult points in the optical comb spectrum technology. Fourier transform spectrometers are the most commonly used broadband light source detection means, but are susceptible to vibrations and have slow response times. The OFC can be rapidly detected by using a dispersive optical component, such as a dispersive grating, and combining a detection matrix, but the spectral resolution is poor, and the single comb tooth is difficult to distinguish. The dual optical comb spectrum technology adopts two optical combs with slightly different repetition frequencies, which can simultaneously satisfy the advantages of high resolution and high speed, but in order to obtain good stability, the dual optical combs need to be simultaneously locked on an optical standard to obtain high phase correlation, thus greatly increasing the complexity of the system. Therefore, the development of phase-stable, high-resolution, high-speed optical comb spectroscopy has been a hot research in various fields.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a novel optical frequency comb generation and detection device and method with unequal comb tooth spaces.
Disclosure of Invention
The present invention provides an optical frequency comb generation and detection system and method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a generation and detection system of optical frequency comb comprises a laser, a Mach-Zehnder modulator, an arbitrary waveform generator, a power amplifier, a detector and an FFT;
the arbitrary waveform generator generates a modulation signal, the modulation signal is composed of radio frequency signals with unequal intervals, the radio frequency signals are amplified by a power amplifier and then input into the Mach-Zehnder modulator, the laser is connected with the optical signal input end of the Mach-Zehnder modulator, the output end of the Mach-Zehnder modulator is connected with the detector, and the output optical frequency comb is observed by FFT.
A method of generating and detecting an optical frequency comb comprising the steps of:
step 1, designing an optical frequency comb radio frequency according to a required radio frequency, and generating time domain radio frequency signal data of the frequency by using an MATLAB program;
and 2, after a laser switch is turned on, enabling the random waveform generator to generate and output a modulation signal, adjusting a linear power supply for driving the power amplifier to a correct voltage, connecting the linear power supply to the power amplifier, turning on a power supply of the Mach-Zehnder modulator, and performing FFT (fast Fourier transform) on the signal after a detector to observe the originally arranged comb teeth and also detect beat frequencies between adjacent comb teeth and frequency multiplication and frequency tripling of all the signals.
Compared with the prior art, the invention has the following advantages:
1. the modulation frequency can be set arbitrarily to obtain comb teeth of different frequency intervals.
2. The system is simple, and the whole size is reduced.
3. The detection of the optical comb adopts a self-beat frequency method, and because the comb teeth are derived from the same laser source and modulator, good phase coherence exists between the comb teeth.
Drawings
FIG. 1 is a schematic diagram of an optical frequency comb generation and detection system;
FIG. 2 is a schematic diagram of a frequency comb generated by MATLAB;
FIG. 3 is a schematic diagram of the frequency difference between adjacent comb teeth of a frequency comb generated by MATLAB;
FIG. 4 is a radio frequency spectrum generated by optical frequency comb beating;
the device comprises a laser-1, a Mach-Zehnder modulator-2, an arbitrary waveform generator-3, a power amplifier-4, a detector-5 and an FFT-6.
Detailed Description
Example 1
An optical frequency comb generation and detection system comprises a laser 1, a Mach-Zehnder modulator 2, an arbitrary waveform generator 3, a power amplifier 4, a detector 5 and an FFT6;
the arbitrary waveform generator 3 generates a modulation signal, the modulation signal is composed of radio frequency signals with unequal intervals, the radio frequency signals are amplified by a power amplifier 4 and then input into the Mach-Zehnder modulator 2, the laser 1 is connected with the optical signal input end of the Mach-Zehnder modulator 2, the output end of the Mach-Zehnder modulator 2 is connected with a detector 5, and the output optical frequency comb is observed by an FFT 6.
A method of generating and detecting an optical frequency comb comprising the steps of:
step 1, designing the radio frequency of an optical frequency comb according to the required radio frequency, and generating time domain radio frequency signal data of the frequencies by using an MATLAB program;
and 2, after a switch of the laser 1 is turned on, enabling the arbitrary waveform generator 3 to generate and output a modulation signal, adjusting a linear power supply for driving the power amplifier 4 to a correct voltage, connecting the modulated signal to the power amplifier 4, turning on a power supply of the Mach-Zehnder modulator 2, and performing FFT6 on the signal after the detector 5 to observe the initially arranged comb teeth and also detect beat frequency between adjacent comb teeth and frequency multiplication and frequency tripling of all the signals.
Example 2
Firstly, time domain radio frequency signal data required by modulation is generated by a program, and the signal consists of radio frequency components with unequal intervals. The specific algorithm is various, for example, the corresponding comb frequency is
Figure BDA0003230067180000041
Wherein m is constant, n is the number of comb teeth, f 0 And f r Is a modulation frequency parameter. If order f 0 ＝700MHz、f r =22MHz, m =2, resulting in 8 comb teeth, the corresponding comb tooth frequencies are 700, 733, 788, 865, 964, 1085, 1228, 1393MHz, respectively, fig. 2 being the above comb tooth frequency distribution, corresponding to the 8 comb teeth of fig. 2 with relatively high power. The frequency interval of adjacent comb teeth of the signal is
Figure BDA0003230067180000042
Namely 33, 55, 77, 99, 121, 143, 165MHz, respectively, as shown in fig. 3. Different from a common optical frequency comb, the interval between adjacent comb teeth is not equal, but gradually increases along with the ordinal number of the comb teeth. The time domain signal is led into an arbitrary waveform generator system, so that a radio frequency modulation signal is generated, the modulation signal passes through a radio frequency attenuator with proper parameters, the function of the radio frequency attenuator is to reduce noise, and then the modulation signal is amplified by a radio frequency power amplifier and is connected with the input end of a modulation signal of a Mach-Zehnder modulator. The output end of the modulator is connected with a detector, and the radio frequency comb generated by the beat frequency of the comb teeth can be seen by using FFT. />
The comb teeth interval of the model radio frequency comb is gradually increased along with the comb tooth ordinal number, and the frequency difference of the interval frequency of the adjacent comb teeth is equal, namely
Figure BDA0003230067180000043
The new comb teeth of the radio frequency generated by the beat frequency of the comb teeth of the radio frequency have equal frequency intervals, and simultaneously, the new comb teeth of the same frequency intervals and the frequency doubling and frequency tripling of the new comb teeth can be obtained, and the rest frequency components in the graph 4, namely the frequency doubling and frequency tripling of the new comb teeth, can further meet the application requirements of various aspects by utilizing the frequency combs. />

Claims (2)

1. An optical frequency comb generation and detection system is characterized by comprising a laser (1), a Mach-Zehnder modulator (2), an arbitrary waveform generator (3), a power amplifier (4), a detector (5) and an FFT (6);
the arbitrary waveform generator (3) generates modulation signals, the modulation signals are composed of radio frequency signals with unequal intervals and are input to the Mach-Zehnder modulator (2) after being amplified by the power amplifier (4), the laser (1) is connected with the optical signal input end of the Mach-Zehnder modulator (2), the output end of the Mach-Zehnder modulator (2) is connected with the detector (5), and the output optical frequency comb is observed by the FFT (6).
2. A method of generating and detecting an optical frequency comb, comprising the steps of:
step 1, designing an optical frequency comb radio frequency according to a required radio frequency, and generating time domain radio frequency signal data of corresponding unequal interval frequency by using an MATLAB program;
and 2, after a switch of the laser (1) is turned on, enabling the random waveform generator (3) to generate and output modulation signals, adjusting a linear power supply for driving the power amplifier (4) to a correct voltage and then connecting the linear power supply to the power amplifier (4), turning on a power supply of the Mach-Zehnder modulator (2), and performing FFT (6) on the signals after the detector (5) to observe initially arranged comb teeth and also detect beat frequencies between adjacent comb teeth and frequency doubling and frequency tripling of all the signals.
CN202110985079.8A 2021-08-25 2021-08-25 Optical frequency comb generation and detection system and method Active CN113791513B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110985079.8A CN113791513B (en) 2021-08-25 2021-08-25 Optical frequency comb generation and detection system and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110985079.8A CN113791513B (en) 2021-08-25 2021-08-25 Optical frequency comb generation and detection system and method

Publications (2)

Publication Number Publication Date
CN113791513A CN113791513A (en) 2021-12-14
CN113791513B true CN113791513B (en) 2023-04-18

Family

ID=78876569

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110985079.8A Active CN113791513B (en) 2021-08-25 2021-08-25 Optical frequency comb generation and detection system and method

Country Status (1)

Country Link
CN (1) CN113791513B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006293247A (en) * 2005-03-15 2006-10-26 Optical Comb Institute Inc Optical frequency comb generation method and device thereof
CN103513491B (en) * 2013-09-25 2016-04-20 南京大学 A kind of method and apparatus producing optical frequency com based on Parabolic Phase modulation
CN108988105B (en) * 2018-07-27 2020-10-02 南京邮电大学 Device and method for generating high-power broadband ultra-flat microwave frequency comb

Also Published As

Publication number Publication date
CN113791513A (en) 2021-12-14

Similar Documents

Publication Publication Date Title
US6724783B2 (en) Method and apparatus for arbitrary waveform generation using photonics
Nguyen et al. Photonic multiple frequency measurement using a frequency shifting recirculating delay line structure
CN107219002B (en) A kind of ultrahigh resolution spectral measurement method and system
JP4803846B2 (en) Optical signal synchronous sampling apparatus and method, and optical signal monitoring apparatus and method using the same
CN103149772A (en) Optical frequency comb generator based on time-frequency mapping
Wang et al. Dense electro-optic frequency comb generated by two-stage modulation for dual-comb spectroscopy
JP2012159546A (en) Optical pulse compressing device and optical pulse compressing method
Lei et al. Recirculating frequency shifting based wideband optical frequency comb generation by phase coherence control
JP6539930B2 (en) Brillouin frequency shift distribution measurement system and Brillouin frequency shift distribution measurement method
CN113791513B (en) Optical frequency comb generation and detection system and method
Supradeepa et al. Self-referenced characterization of optical frequency combs and arbitrary waveforms using a simple, linear, zero-delay implementation of spectral shearing interferometry
Zhang et al. Impact of dispersion effects on temporal-convolution-based real-time Fourier transformation systems
CN107135005B (en) Ultra-wideband signal multi-path parallel compression sampling method based on photoelectric combination
Seifert et al. A method for unique phase retrieval of ultrafast optical fields
JP7370544B2 (en) Optical frequency measurement device
US20040257578A1 (en) Optical pulse characterization for telecommunications applications
CN111693143B (en) Real-time pulse laser spectrum measurement method and system with large dynamic range
CN103780307A (en) System and method for generating optical sampling pulse sequence
CN113922883A (en) Device and method for generating flat broadband microwave frequency comb based on cascade modulation light injection semiconductor laser
Mu et al. A tunable self-mixing chaotic laser based on high frequency electro-optic modulation
Martín-Mateos et al. Optical communication components characterization using electro-optic dual-combs
JP6483453B2 (en) Terahertz electric field waveform detector
Klee et al. Self-referenced spectral phase retrieval of dissimilar optical frequency combs via multiheterodyne detection
Voskoboinik et al. Frequency-domain analysis of dynamically applied strain using sweep-free Brillouin time-domain analyzer
Andrianov et al. Numerical modeling and experimental verification of advanced methods for characterization of broadband optical pulses and optical frequency combs

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