CN110687734A - Photon multiple frequency ultrahigh radio frequency signal oscillator - Google Patents
Photon multiple frequency ultrahigh radio frequency signal oscillator Download PDFInfo
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- CN110687734A CN110687734A CN201910990545.4A CN201910990545A CN110687734A CN 110687734 A CN110687734 A CN 110687734A CN 201910990545 A CN201910990545 A CN 201910990545A CN 110687734 A CN110687734 A CN 110687734A
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- 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
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- 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
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Abstract
A photon frequency multiplication ultrahigh radio frequency signal oscillator is suitable for the fields of photoelectron technology, laser technology and optical communication. The device comprises a mode-locked laser (1), an optical isolator (2), an optical circulator (3), a phase-shift chirped fiber grating (4), a 1 x 2 optical coupler (6), a light polarization controller (7), a light traveling wave phase modulator (8), a low-frequency signal amplifier (9), a low-frequency signal generator (10), a light band-blocking filter (11), an erbium-doped fiber amplifier (12), an optical beam splitter (13), a spectrum analyzer (14) and a high-speed photoelectric detector (15).
Description
Technical Field
The invention belongs to the information photoelectron technology, is suitable for the laser technology and the optical communication field, and particularly relates to a photon frequency multiplication ultrahigh radio frequency signal oscillator.
Background
High-speed radio frequency signals are widely applied to the fields of sonar, radar, mobile communication and the like. At present, high-speed radio frequency signals are generally realized by an RC oscillator, an LC oscillator or a crystal oscillator which are electrically. However, the stability, noise interference, signal distortion, and the like of the electronic oscillator are poor. Photons do not have charge property, so that the inherent bottleneck of electrons can be effectively overcome, and by utilizing the characteristics of parallel processing, high spectral purity, accurate frequency stability and the like of the photons, a radio frequency signal with better performance can be obtained by an optical method. The optical resonant cavity modulation type radio frequency signal oscillator is the most common one at present, has a simple structure, but generally, as the oscillation frequency increases, the modulation efficiency is obviously reduced, so that the amplitude of a radio frequency output signal fluctuates, and the rapid and accurate switching of the oscillation frequency cannot be realized.
The invention aims to overcome the defects of the conventional photon radio frequency signal oscillator, and realizes a photon frequency multiplication ultrahigh radio frequency signal oscillator with stable amplitude, low noise and adjustable oscillation frequency so as to meet the requirement of further development in the high-precision field.
Disclosure of Invention
The technical scheme of the invention is as follows:
a photon multiple frequency ultra-high radio frequency signal oscillator comprises a mode-locked laser, an optical isolator, an optical circulator, a phase shift chirped fiber grating, a 1 x 2 optical coupler, an optical polarization controller, an optical traveling wave phase modulator, a low-frequency signal amplifier, a low-frequency signal generator, an optical band-stop filter, an erbium-doped fiber amplifier, an optical beam splitter, an optical spectrum analyzer and a high-speed photoelectric detector.
The connections of the devices are as follows:
the output port of the mode-locked laser is connected with the input port of the optical isolator, the output port of the optical isolator is connected with the first port of the optical circulator, the second port of the optical circulator is connected with one end of the phase-shift chirped fiber grating, the other end of the phase-shift chirped fiber grating is connected with the first port of the 1 x 2 optical coupler, the second port of the 1 x 2 optical coupler is connected with one end of the optical polarization controller, the other end of the optical polarization controller is connected with the optical input port of the optical traveling wave phase modulator, the optical output port of the optical traveling wave phase modulator is connected with the third port of the 1 x 2 optical coupler, the output port of the low-frequency signal generator is connected with the input port of the low-frequency signal amplifier, the output port of the low-frequency signal amplifier is connected with the electrical input port of the optical traveling wave phase modulator, the third port of the optical circulator is connected with one end of the optical band, the output port of the erbium-doped fiber amplifier is connected with the input port of the optical splitter, the first output port of the optical splitter is connected with the input port of the optical spectrum analyzer, the second output port of the optical splitter is connected with the input port of the high-speed photoelectric detector, and the output port of the high-speed photoelectric detector is used as the output of the photon multi-frequency-multiplication ultrahigh radio frequency signal oscillator.
The working mode of the invention is as follows:
the invention provides a photon multiple frequency ultra-high radio frequency signal oscillator, which introduces an optical signal output by a mode-locked laser into a feedback cavity formed by a second port and a third port of a 1 x 2 optical coupler through the band-pass action of a phase-shifting chirped fiber grating in a broadband resistance center, modulates harmonic waves on two sides of the optical signal output by the mode-locked laser through the modulation of a light traveling wave phase modulator by a low-frequency generator, extracts high-order frequency-doubling harmonic waves from the feedback cavity through multiple cycles of the feedback cavity when the interval of the frequency-doubling harmonic signals on two sides exceeds the stop band bandwidth of the phase-shifting chirped fiber grating, filters a central carrier wave through a band-resistance filter, and obtains multiple frequency ultra-high radio frequency oscillation signals at the output end of a high-speed photoelectric detector. The invention has the advantages that the ultrahigh oscillation frequency radio frequency signal obtained by utilizing the multi-harmonic feedback frequency multiplication effect of the low frequency signal and matching with the broadband resistance effect of the chirped fiber grating has low noise and strong stability.
Drawings
Fig. 1 shows a structure of a photon frequency multiplication ultrahigh radio frequency signal oscillator.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
A photon multiple frequency ultra-high radio frequency signal oscillator comprises a mode-locked laser 1, an optical isolator 2, an optical circulator 3, a phase-shift chirped fiber grating 4, a 1 x 2 optical coupler 6, a light polarization controller 7, an optical traveling wave phase modulator 8, a low-frequency signal amplifier 9, a low-frequency signal generator 10, an optical band-stop filter 11, an erbium-doped fiber amplifier 12, an optical beam splitter 13, a spectrum analyzer 14 and a high-speed photoelectric detector 15.
The connections of the devices are as follows:
the output port of the mode-locked laser 1 is connected with the input port of the optical isolator 2, the output port of the optical isolator 2 is connected with the first port of the optical circulator 3, the second port of the optical circulator 3 is connected with one end of the phase-shift chirped fiber grating 4, the other end of the phase-shift chirped fiber grating 4 is connected with the first port of the 1 × 2 optical coupler 6, the second port of the 1 × 2 optical coupler 6 is connected with one end of the optical polarization controller 7, the other end of the optical polarization controller 7 is connected with the optical input port of the optical traveling wave phase modulator 8, the optical output port of the optical traveling wave phase modulator 8 is connected with the third port of the 1 × 2 optical coupler 6, the output port of the low-frequency signal generator 10 is connected with the input port of the low-frequency signal amplifier 9, the output port of the low-frequency signal amplifier 9 is connected with the electrical input port of the optical traveling wave phase modulator 8, the third port of the, the other end of the optical band-stop filter 11 is connected with an input port of an erbium-doped fiber amplifier 12, an output port of the erbium-doped fiber amplifier 12 is connected with an input port of an optical beam splitter 13, a first output port of the optical beam splitter 13 is connected with an input port of an optical spectrum analyzer 14, a second output port of the optical beam splitter 13 is connected with an input port of a high-speed photoelectric detector 15, and an output port of the high-speed photoelectric detector 15 is used as the output of the photon multi-frequency-multiplication ultrahigh radio frequency signal oscillator.
The center of the pass band of the phase-shift chirped fiber grating 4 is consistent with the wavelength of the output signal of the mode-locked laser 1.
The stop band bandwidth of the phase-shift chirped fiber grating 4 is equal to 2 times of the oscillation frequency of the ultrahigh radio frequency signal to be generated.
The center of the stop band of the optical band-stop filter 12 is consistent with the wavelength of the output signal of the mode-locked laser 1.
Claims (4)
1. A photon frequency multiplication ultrahigh radio frequency signal oscillator is characterized in that: the device comprises a mode-locked laser (1), an optical isolator (2), an optical circulator (3), a phase-shift chirped fiber grating (4), a 1 x 2 optical coupler (6), a light polarization controller (7), a light traveling wave phase modulator (8), a low-frequency signal amplifier (9), a low-frequency signal generator (10), a light band-blocking filter (11), an erbium-doped fiber amplifier (12), an optical beam splitter (13), a spectrum analyzer (14) and a high-speed photoelectric detector (15).
2. The connections of the devices are as follows:
the output port of the mode-locked laser (1) is connected with the input port of the optical isolator (2), the output port of the optical isolator (2) is connected with the first port of the optical circulator (3), the second port of the optical circulator (3) is connected with one end of the phase-shift chirped fiber grating (4), the other end of the phase-shift chirped fiber grating (4) is connected with the first port of the 1 x 2 optical coupler (6), the second port of the 1 x 2 optical coupler (6) is connected with one end of the light polarization controller (7), the other end of the light polarization controller (7) is connected with the light input port of the traveling wave phase modulator (8), the light output port of the light traveling wave phase modulator (8) is connected with the third port of the 1 x 2 optical coupler (6), the output port of the low-frequency signal generator (10) is connected with the input port of the low-frequency signal amplifier (9), the output port of the low-frequency signal amplifier (9) is connected with the electric input port of the traveling wave phase modulator (8), the third port of the optical circulator (3) is connected with one end of an optical band elimination filter (11), the other end of the optical band elimination filter (11) is connected with an input port of an erbium-doped optical fiber amplifier (12), an output port of the erbium-doped optical fiber amplifier (12) is connected with an input port of an optical beam splitter (13), a first output port of the optical beam splitter (13) is connected with an input port of an optical spectrum analyzer (14), a second output port of the optical beam splitter (13) is connected with an input port of a high-speed photoelectric detector (15), and an output port of the high-speed photoelectric detector (15) is used as the output of the photon multi-frequency multiplication ultrahigh radio frequency signal oscillator.
3. The photonic frequency-multiplication ultrahigh-frequency signal oscillator according to claim 1, wherein the center of the passband of the phase-shifted chirped fiber grating (4) coincides with the wavelength of the output signal of the mode-locked laser (1), and the stop band bandwidth of the phase-shifted chirped fiber grating (4) is equal to 2 times the oscillation frequency of the ultrahigh-frequency signal to be generated.
4. The photonic frequency-multiplication ultrahigh-frequency signal oscillator according to claim 1, wherein the center of the stop band of the optical band-stop filter (12) coincides with the wavelength of the output signal of the mode-locked laser (1).
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| CN201910990545.4A CN110687734A (en) | 2019-10-18 | 2019-10-18 | Photon multiple frequency ultrahigh radio frequency signal oscillator |
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| CN201910990545.4A CN110687734A (en) | 2019-10-18 | 2019-10-18 | Photon multiple frequency ultrahigh radio frequency signal oscillator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002787A (en) * | 2021-11-04 | 2022-02-01 | 中国人民解放军国防科技大学 | Optical fiber coherent array phase control system based on probe light |
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| JP2006047678A (en) * | 2004-08-04 | 2006-02-16 | Nippon Telegr & Teleph Corp <Ntt> | Variable band type optical filter |
| CN102368582A (en) * | 2011-09-22 | 2012-03-07 | 浙江大学 | Laser wavelength adjustment-based opto-electronic oscillator with tunable frequency and broadband |
| CN102931568A (en) * | 2012-11-14 | 2013-02-13 | 浙江大学 | Photoelectricity oscillator based on narrow-band double-peak phase shift fiber bragg grating and method thereof |
| CN104377533A (en) * | 2014-11-10 | 2015-02-25 | 中国电子科技集团公司第四十四研究所 | Phase shift optical grating based frequency self-stabilization photoelectric oscillator |
| CN105633773A (en) * | 2016-03-21 | 2016-06-01 | 北京交通大学 | Chirped and phase-shifted fiber bragg grating-based ring cavity Q-switched pulse laser |
| CN106654829A (en) * | 2017-02-23 | 2017-05-10 | 苏州龙格库塔光电科技有限公司 | Tunable ultrashort pulse fiber optic parametric oscillator |
-
2019
- 2019-10-18 CN CN201910990545.4A patent/CN110687734A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006047678A (en) * | 2004-08-04 | 2006-02-16 | Nippon Telegr & Teleph Corp <Ntt> | Variable band type optical filter |
| CN102368582A (en) * | 2011-09-22 | 2012-03-07 | 浙江大学 | Laser wavelength adjustment-based opto-electronic oscillator with tunable frequency and broadband |
| CN102931568A (en) * | 2012-11-14 | 2013-02-13 | 浙江大学 | Photoelectricity oscillator based on narrow-band double-peak phase shift fiber bragg grating and method thereof |
| CN104377533A (en) * | 2014-11-10 | 2015-02-25 | 中国电子科技集团公司第四十四研究所 | Phase shift optical grating based frequency self-stabilization photoelectric oscillator |
| CN105633773A (en) * | 2016-03-21 | 2016-06-01 | 北京交通大学 | Chirped and phase-shifted fiber bragg grating-based ring cavity Q-switched pulse laser |
| CN106654829A (en) * | 2017-02-23 | 2017-05-10 | 苏州龙格库塔光电科技有限公司 | Tunable ultrashort pulse fiber optic parametric oscillator |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002787A (en) * | 2021-11-04 | 2022-02-01 | 中国人民解放军国防科技大学 | Optical fiber coherent array phase control system based on probe light |
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Application publication date: 20200114 |