CN111934162A - Space-symmetric time-symmetric photoelectric oscillator frequency doubling system based on microwave photon filter - Google Patents
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Abstract
The invention relates to an astronomical time symmetric photoelectric oscillator frequency doubling system based on a microwave photon filter, which comprises: the laser generates a light beam, the light beam is modulated by the first polarization controller and the phase modulator in sequence and then is output, the light beam is filtered by the Bragg grating FP cavity and then passes through the third polarization controller and the polarization beam splitter, the polarization beam splitter divides the light beam into two paths, the first light beam is output to the first delay line, the second light beam is output to the tunable delay line and the second delay line, and the two light beams are output to the double-balanced detector after being delayed; the beat frequency of the double-balanced detector is output to a radio frequency amplifier for amplification and then output to a power divider, and a part of signals are output to a phase modulator to form an astronomical-time symmetric photoelectric oscillator model. The other part of the generated output radio frequency signals are modulated to local oscillation optical signals output by the optical signals through the optical fibers, and the signals with different frequency multiplication coefficients are output through the offset point of the modulation intensity modulator and the second offset controller.
Description
Technical Field
The invention relates to the technical field of microwave photon reference signal generation, in particular to an astronomical time symmetric photoelectric oscillator frequency multiplication system based on a microwave photon filter.
Background
The application of the space-time symmetry in the optical field has attracted much attention in recent years, and is applied to optical devices and some new-function optical systems. The output of the single mode laser can be obtained by adjusting the gain and loss coefficients of the two cavities. Recently, the effect is applied to a photoelectric oscillator coupled by two loops, the space-time symmetry can be broken by setting the loop lengths of the two loops to be strictly the same and enabling the gain of one loop to be equal to the loss of the other loop, and a single-mode oscillation technology is realized, wherein the mode is selected mainly through the gain loss and the coupling coefficients of the two loops, in 2018, the Li Ming dynasty in the semiconductor research institute of the academy of Chinese sciences applies for an invention patent named as a photoelectric oscillator based on the space-time symmetry principle, and the structure of the invention is a space-double-loop structure-based space-time symmetry photoelectric oscillator. Heretofore, a journal paper entitled "part-time-systematic electronic oscillator" was published by zhangjijun researchers at river-south university and yao jian chang changshi in famous journal Science Advances, and its structure was an astronomical-time symmetric optoelectronic oscillator based on a space double ring. In 2019, Zhangjijun proposed a space single-loop space-time symmetric optoelectronic oscillator formed by double lasers, so that the volume and complexity of the system are reduced. Aiming at realizing a larger tuning range of an astronomical time symmetric microwave photonic filter, the invention provides a method and a system structure for constructing the microwave photonic filter based on a Bragg grating FP cavity, a phase modulator and a tunable laser so as to realize astronomical-time symmetric photoelectric oscillation of a space double ring, and realizes an astronomical-time symmetric photoelectric oscillator of a frequency doubling space double ring with tunable frequency doubling coefficient by a cascade intensity modulator on the basis of the structure, thereby further expanding the tunable range.
Disclosure of Invention
Therefore, the invention provides an astronomical time symmetric frequency multiplication system of a photoelectric oscillator based on a microwave photon filter, which is used for expanding the tunable range of the photoelectric oscillator in the prior art.
In order to achieve the above object, the present invention provides a frequency doubling system of an astronomical time symmetric optoelectronic oscillator based on a microwave photonic filter, comprising:
the device comprises a laser, a first polarization controller, a Bragg grating FP (Fabry-Perot) cavity, a phase modulator, a third polarization controller, a polarization beam splitter, a first delay line, a second delay line, a tunable delay line, a double-balanced detector, a radio-frequency amplifier and a power amplifier;
the laser generates a light beam, the light beam passes through the first polarization controller, the first polarization controller performs polarization modulation on an optical signal in the light beam and outputs the modulated light beam to the phase modulator, the phase modulator performs phase modulation on the optical signal in the modulated light beam and outputs the modulated light beam, the Bragg grating FP cavity filters the modulated light beam after the phase modulator, the modulated light beam passes through the third polarization controller after filtering, the third polarization controller performs tertiary modulation on the light beam and transmits the tertiary modulated light beam to the polarization beam splitter, the polarization beam splitter divides the tertiary modulated light beam into two paths, wherein a first light beam in one path is output to the first delay line and is output to the double-balanced detector after passing through the first delay line, a second light beam in the other path is output to the tunable delay line and is output to the second delay line after passing through the tunable delay line, the signal is output to the double balanced detector after passing through the second delay line; the double-balanced detector receives a first light beam output by the first delay line and a second light beam output by the second delay line respectively, converts the first light beam and the second light beam into electric signals, and sends the electric signals to the radio frequency amplifier, the radio frequency amplifier amplifies the signals and outputs the amplified signals to the power divider, and the signals passing through the power divider are output to the phase modulator to form an astronomical-time symmetric photoelectric oscillator model.
Furthermore, the frequency doubling subsystem also comprises an intensity regulator, a second polarization controller, a photoelectric detector and an analysis system;
the phase modulator divides the modulated optical signal into two paths, wherein one path enters the space-time symmetrical photoelectric oscillator model, the other path enters the intensity modulator after passing through the second polarization controller and being modulated by the second polarization controller, the space-time symmetrical photoelectric oscillator emits a radio frequency signal to modulate the optical signal entering the intensity modulator, the light beam modulated by the intensity modulator is output to the photoelectric detector, and the photoelectric detector detects the optical signal in the intensity modulator modulated light beam and transmits the detected optical signal to the signal analysis system.
Further, the input end of the first polarization controller is connected with the output end of the laser, and is used for modulating an optical signal of the laser output beam; the input end of the phase modulator is connected with the output end of the first polarization controller and is used for modulating the optical signal of the light beam output by the first polarization controller; the input end of the third polarizer is connected with the output end of the phase modulator and is used for modulating an optical signal of an output beam of the phase modulator, wherein the Bragg grating FP cavity filters an output path of the phase modulator; the light beam filtered by the Bragg grating FP cavity enters the third polarizer; the input end of the polarization beam splitter is connected with the output end of the third polarizer and is used for splitting the light beam output by the third polarizer into two beams; the input end of the first delay line is connected with the first output end of the polarization beam splitter and used for delaying a first light beam; the input end of the double-balanced detector is connected with the output end of the first delay line and is used for detecting the light beam extended by the first delay line; the input end of the tunable delay line is connected with the second output end of the polarization beam splitter, and the input end of the second delay line is connected with the output end of the tunable delay line and used for delaying a second light beam; the input end of the double-balanced detector is connected with the output end of the second delay line and is used for detecting the light beam extended by the second delay line; the input end of the radio frequency amplifier is connected with the output end of the double-balanced detector and used for amplifying the received electrical signal subjected to beat frequency; the input end of the power divider is connected with the output end of the radio frequency amplifier and is used for dividing the electric signal received by the power divider; and the input end of the phase modulator is connected with the output end of the power divider to form a closed double-loop circuit.
Further, the input end of the second polarization controller is connected with the output end of the phase modulator, and is used for modulating the optical signal of the output light beam of the phase modulator; the input end of the intensity modulator is connected with the output end of the second polarization controller and used for adjusting the frequency multiplication coefficient of the light beam; the input end of the photoelectric detector is connected with the output end of the intensity modulator and used for detecting optical signals in the light beam modulated by the intensity modulator; the input end of the analysis system and the output end of the photoelectric detector are used for receiving and analyzing the signals received by the photoelectric detector.
Further, the polarization beam splitter divides the light beam after the third modulation into two paths to form a closed double loop circuit, wherein the loop includes a first loop and a second loop:
the first loop includes: a light beam output by the laser is output to the phase modulator after being modulated by the polarization controller PC1, the light beam modulated by the phase modulator enters the third polarization controller after being transmitted and filtered by the bragg grating FP cavity, the light beam modulated by the third polarization controller is output to the polarization beam splitter, the polarization beam splitter outputs a first light beam after separating the light beam, the first light beam passes through the first delay line, then passes through the double-balanced detector, enters the radio frequency amplifier, and finally is coupled by the power splitter and fed back to the phase modulator to form a closed loop;
the second loop includes: the light beam output by the laser is output to the phase modulator after being modulated by the polarization controller PC1, the light beam modulated by the phase modulator enters the third polarization controller after being transmitted and filtered by the bragg grating FP cavity, the light beam modulated by the third polarization controller is output to the polarization beam splitter, the polarization beam splitter outputs the second light beam after separating the light beam, the second light beam enters the second delay line after passing through the tunable delay line, enters the radio frequency amplifier after passing through the double-balanced detector, and finally is coupled and fed back to the phase modulator by the power splitter to form a closed loop.
Further, the third polarizer and the polarization beam splitter are connected in cascade to adjust the gain and attenuation of the first loop and the second loop.
Further, the laser is tunable.
Furthermore, the bragg grating FP cavity and the tunable laser constitute a double-loop photoelectric oscillation circuit for filtering by a microwave photonic device, and the size ratio of the light intensities of the two loops is adjusted by changing the included angle between the third polarization controller PC3 and the polarization beam splitter, and the gain and attenuation of the first loop and the second loop are controlled.
Further, the intensity modulator adjusts the frequency multiplication coefficient of the output frequency multiplication signal by adjusting the modulation index and the bias point.
Compared with the prior art, the gain and attenuation regulation of the first loop and the second loop is realized by cascading the third polarization controller PC3 and the polarization beam splitter, the angle between the third polarization controller PC3 and the polarization beam splitter is changed, the light intensity size ratio of the two loops is changed, the gain and attenuation regulation is realized, and the space-time symmetry is realized when the gain of the first loop is equal to the attenuation of the second loop.
Furthermore, a tunable delay line is introduced on the second loop, and the delay of the two loops is adjusted, so that the delay lengths of the two loops are strictly equal, and the space-time symmetry is realized.
Furthermore, the output of frequency multiplication signals with adjustable frequency multiplication coefficients is realized by adjusting the modulation index and the bias point of the intensity modulator, and the signals are obtained by the photoelectric detector and sent to a signal analysis system, so that the space-time symmetric double-loop space-time symmetric photoelectric oscillator with tunable frequency multiplication coefficients is realized.
Further, tunable lasers can continuously vary the laser output wavelength within a range to meet different requirements. The intensity modulator adjusts the frequency multiplication coefficient of the output frequency multiplication signal by adjusting the modulation index and the bias point, so that frequency multiplication signals with different frequency multiplication coefficients are obtained.
Drawings
Fig. 1 is a schematic structural diagram of an astronomical time symmetric optoelectronic oscillator frequency multiplication system based on a microwave photonic filter according to an embodiment of the present invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, the invention provides a dual frequency system of an astronomical time symmetric optoelectronic oscillator based on a microwave photonic filter, which comprises a microwave photonic filter based on a bragg grating FP cavity and a phase modulator, thereby realizing an astronomical time symmetric optoelectronic oscillator model of a space double ring, which is referred to as PT-OEO model for short.
Specifically, in the embodiment of the invention, a photoelectric oscillator based on space-time symmetry, for short, a PT-OEO model includes a laser, a polarization controller, a bragg grating FP cavity, a phase modulator, a polarization beam splitter, a first delay line, a second delay line, a tunable delay line, a double balanced detector, a radio frequency amplifier and a power amplifier; the polarization controller comprises a first polarization controller, a second polarization controller and a third polarization controller.
Specifically, in the embodiment of the present invention, light output by a laser is output to a phase modulator through a light signal modulated by a polarization controller PC1, the light signal modulated by the phase modulator enters a third polarization controller PC3 after being transmitted and filtered by a bragg grating FP cavity, a signal modulated by a third polarization controller PC3 is output to a polarization beam splitter, the polarization beam splitter splits the signal into two beams, wherein a first beam of the signal enters a first delay line, and a signal passing through the first delay line is output to a double balanced detector; the second beam signal enters a second delay line after passing through the tunable delay line, and the signal passing through the second delay line is output to the double-balanced detector; the signal output by the double-balanced detector is input into a radio frequency amplifier, the signal output by the radio frequency amplifier is input into a power amplifier, and the signal output by the power amplifier is input into a phase modulator.
Specifically, in the embodiment of the present invention, an input end of the first polarization controller is connected to an output end of the laser, and is configured to modulate an optical signal of a light beam output by the laser; the input end of the phase modulator is connected with the output end of the first polarization controller and is used for modulating the optical signal of the light beam output by the first polarization controller; the input end of the third polarizer is connected with the output end of the phase modulator and is used for modulating an optical signal of an output beam of the phase modulator, wherein the Bragg grating FP cavity transmits and filters an output path of the phase modulator; the light beam filtered by the Bragg grating FP cavity enters a third polarizer; the input end of the polarization beam splitter is connected with the output end of the third polarizer and used for splitting the light beam output by the third polarizer into two beams; the input end of the first delay line is connected with the first output end of the polarization beam splitter and used for delaying the first light beam; the input end of the double-balanced detector is connected with the output end of the first delay line and is used for detecting the light beam extended by the first delay line; the input end of the tunable delay line is connected with the second output end of the polarization beam splitter, and the input end of the second delay line is connected with the output end of the tunable delay line and used for delaying the second light beam; the input end of the double-balanced detector is connected with the output end of the second delay line and is used for detecting the light beam extended by the second delay line; the input end of the radio frequency amplifier is connected with the output end of the double-balanced detector and is used for amplifying the received optical signals in the optical beam; the input end of the power divider is connected with the output end of the radio frequency amplifier and used for carrying out power division on the light beam signals received by the power divider; the input end of the phase modulator is connected with the output end of the power divider to form a closed double-loop circuit.
The input end of the second polarization controller is connected with the output end of the phase modulator and used for modulating the optical signal of the light beam output by the phase modulator; the input end of the intensity modulator is connected with the output end of the second polarization controller and used for adjusting the frequency multiplication coefficient of the light beam; the input end of the photoelectric detector is connected with the output end of the intensity modulator and used for detecting optical signals in the light beam modulated by the intensity modulator; the input end of the analysis system and the output end of the photoelectric detector are used for receiving the signals received by the photoelectric detector and analyzing the signals.
Specifically, in the embodiment of the present invention, a signal is divided into two beams by a polarization beam splitter, the two beams pass through a first delay line and a second delay line respectively, then pass through a double-balanced detector, and then enter a radio frequency amplifier, and finally pass through a power splitter and are coupled and fed back to a phase modulator to form a closed double loop. Light output by the laser is output to the phase modulator through a light signal modulated by the polarization controller PC1, the light signal modulated by the phase modulator enters the third polarization controller PC3 after being transmitted and filtered by the Bragg grating FP cavity, the signal modulated by the third polarization controller PC3 is output to the polarization beam splitter, passes through the first delay line, enters the radio frequency amplifier after passing through the double-balanced detector, and finally is coupled by the power divider and fed back to the phase modulator to form a closed loop as a first loop; light output by the laser is output to the phase modulator through a light signal modulated by the polarization controller PC1, the light signal modulated by the phase modulator enters the third polarization controller PC3 after being transmitted and filtered by the Bragg grating FP cavity, the signal modulated by the third polarization controller PC3 is output to the polarization beam splitter, passes through the tunable delay line, the second delay line and the double-balanced detector, enters the radio frequency amplifier, and finally is coupled by the power divider and fed back to the phase modulator to form a closed loop which is a second loop; the gain and attenuation of the first loop and the second loop are adjusted through the cascade connection of the third polarization controller and the polarization beam splitter, meanwhile, a tunable delay line is introduced into the second delay line in the second loop, and the loop lengths of the first loop and the second loop are adjusted to be strictly identical.
Specifically, in the embodiment of the invention, firstly, a double-ring photoelectric oscillation circuit for filtering of a microwave photonic device is formed by a Bragg grating FP (Fabry-Perot) cavity and a tunable laser; the third polarization controller is adjusted to change the included angle between the third polarization controller and the polarization beam splitter, so that the size proportion of the light intensity of the first loop and the second loop where the first beam signal and the second beam signal correspond to is changed, and the regulation and control of gain and attenuation are realized. When the gain of a first loop of a first beam signal is equal to the attenuation of a second loop in which a second beam signal is positioned, the space-time symmetry is realized, a tunable delay line is introduced into the second beam signal in the second loop, and the delays of the first loop and the second loop are adjusted to ensure that the delay lengths of the first loop and the second loop are strictly equal, so that the space-time symmetric optoelectronic oscillator model construction of a space double loop based on Bragg grating FP (Fabry-Perot) cavity filtering is realized.
The invention provides an astronomical-time symmetry-based photoelectric oscillator and a frequency multiplication signal generation system, wherein the astronomical-time symmetry-based photoelectric oscillator further comprises a cascade intensity modulator for realizing frequency multiplication coefficient tunable frequency multiplication space double loop.
Specifically, in the embodiment of the present invention, the optical-electrical oscillator model based on the astronomical-time symmetry includes a laser, a polarization controller, a bragg grating FP cavity, a phase modulator, a polarization beam splitter, a first delay line, a second delay line, a tunable delay line, a double balanced detector, a radio frequency amplifier, a power amplifier, an intensity adjuster, a photodetector, and an analysis system; the polarization controller comprises a first polarization controller, a second polarization controller and a third polarization controller.
Specifically, in the embodiment of the present invention, light output by the laser passes through an optical signal modulated by the polarization controller PC1 and is output to the phase modulator, one path of the optical signal modulated by the phase modulator enters the PT-OEO model, the other path of the optical signal passes through the second polarization controller and enters the intensity modulator, and is modulated by radio frequency obtained by the PT-OEO, output of a frequency multiplication signal with an adjustable frequency multiplication coefficient is realized by adjusting a modulation index and a bias point of the intensity modulator, and the signal is obtained by the photodetector and is sent to the signal analysis system.
Specifically, in the embodiment of the present invention, in order to obtain a double frequency signal, the intensity modulator is located at the minimum offset point, output of an odd-order sideband of carrier suppression is realized, a high-order sideband is filtered by the filter, and only 1 order is left, so as to obtain a 2-order frequency multiplication signal; in order to obtain quadruple frequency, the intensity modulator is positioned at the highest bias point to obtain even-order sidebands, then a notch is used for filtering out a central carrier, a low-pass filter is used for filtering out high-order sidebands to obtain 2-order sidebands, and finally beat frequency is used for obtaining 4-order frequency multiplication; in order to obtain a six-time frequency signal, the intensity modulator is set at the lowest bias point to obtain an odd-order sideband of carrier suppression, the intensity of an incident radio frequency signal is adjusted through the amplifier or the attenuator to obtain a 1-order sideband modulation index of 0, finally a 3-order sideband is realized, a beat frequency obtains a 6-time frequency signal, and other 8, 10 and other like frequency-multiplied signals can be obtained in the same way.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
Claims (9)
1. A space-symmetric time-symmetric photoelectric oscillator frequency multiplication system based on a microwave photon filter is characterized by comprising:
the device comprises a laser, a first polarization controller, a Bragg grating FP (Fabry-Perot) cavity, a phase modulator, a third polarization controller, a polarization beam splitter, a first delay line, a second delay line, a tunable delay line, a double-balanced detector, a radio-frequency amplifier and a power amplifier;
the laser generates a light beam, the light beam passes through the first polarization controller, the first polarization controller modulates an optical signal in the light beam and outputs the modulated light beam to the phase modulator, the phase modulator secondarily modulates the optical signal in the modulated light beam, the phase modulator outputs the secondarily modulated light beam, the Bragg grating FP cavity emits filtering light to an output path of the phase modulator in the process of the secondarily modulated light beam by the phase modulator, the secondarily modulated light beam passes through the third polarization controller after being filtered, the third polarization controller transmits the thirdly modulated light beam to the polarization beam splitter after being thirdly modulated, the polarization beam splitter divides the thirdly modulated light beam into two paths, wherein the first light beam in one path is output to the first delay line and is output to the double balanced detector after passing through the first delay line, the second light beam of the other path is output to the tunable delay line, is output to the second delay line after passing through the tunable delay line, and is output to the double balanced detector after passing through the second delay line;
the double-balanced detector receives a first light beam output by the first delay line and a second light beam output by the second delay line respectively, then sequentially outputs the first light beam output by the first delay line and the second light beam output by the second delay line to the radio frequency amplifier, the radio frequency amplifier amplifies an optical signal in the light beam and outputs the light beam after signal amplification to the power divider, and the signal passing through the power divider is output to the phase modulator to form an astronomical-time symmetric photoelectric oscillator model.
2. The microwave photonic filter based spatially symmetric optoelectronic oscillator frequency doubling system of claim 1, further comprising an intensity adjuster, a second polarization controller, a photodetector, and an analysis system;
the phase modulator divides the modulated optical signal into two paths, wherein one path enters the space-time symmetrical photoelectric oscillator model, the other path enters the intensity modulator after being modulated by the second polarization control through the second polarization control, the space-time symmetrical photoelectric oscillator emits a radio frequency signal to modulate the optical signal of one path of light beam entering the intensity modulator, the light beam modulated by the intensity modulator is output to the photoelectric detector, and the photoelectric detector detects the optical signal in the intensity modulator modulated light beam and transmits the detected optical signal to the signal analysis system.
3. The microwave photonic filter-based space-time symmetric optoelectronic oscillator frequency doubling system according to claim 1, wherein the input end of the first polarization controller is connected to the output end of the laser for modulating the optical signal of the laser output beam; the input end of the phase modulator is connected with the output end of the first polarization controller and is used for modulating the optical signal of the light beam output by the first polarization controller; the input end of the third polarizer is connected with the output end of the phase modulator and is used for modulating an optical signal of an output light beam of the phase modulator, wherein the Bragg grating FP cavity transmits and filters an output path of the phase modulator; the light beam filtered by the Bragg grating FP cavity enters the third polarizer; the input end of the polarization beam splitter is connected with the output end of the third polarizer and is used for splitting the light beam output by the third polarizer into two beams; the input end of the first delay line is connected with the first output end of the polarization beam splitter and used for delaying a first light beam; the input end of the double-balanced detector is connected with the output end of the first delay line and is used for detecting the light beam extended by the first delay line; the input end of the tunable delay line is connected with the second output end of the polarization beam splitter, and the input end of the second delay line is connected with the output end of the tunable delay line and used for delaying a second light beam; the input end of the double-balanced detector is connected with the output end of the second delay line and is used for detecting the light beam extended by the second delay line; the input end of the radio frequency amplifier is connected with the output end of the double-balanced detector and used for amplifying the received optical signals in the optical beam; the input end of the power divider is connected with the output end of the radio frequency amplifier and is used for performing power division on the light beam signals received by the power divider; and the input end of the phase modulator is connected with the output end of the power divider to form a closed double-loop circuit.
4. The microwave photonic filter-based spatially symmetric optoelectronic oscillator frequency doubling system according to claim 2, wherein an input of the second polarization controller is connected to an output of the phase modulator for modulating the optical signal of the phase modulator output beam; the input end of the intensity modulator is connected with the output end of the second polarization controller and used for adjusting the frequency multiplication coefficient of the light beam; the input end of the photoelectric detector is connected with the output end of the intensity modulator and used for detecting optical signals in the light beam modulated by the intensity modulator; the input end of the analysis system and the output end of the photoelectric detector are used for receiving and analyzing the signals received by the photoelectric detector.
5. The microwave photonic filter-based spatially symmetric optoelectronic oscillator frequency doubling system of claim 3, wherein the polarization beam splitter splits the three modulated beams into two paths to form a closed dual loop circuit, wherein the loop comprises a first loop and a second loop:
the first loop includes: a light beam output by the laser is output to the phase modulator after being modulated by the polarization controller PC1, the light beam modulated by the phase modulator enters the third polarization controller after being transmitted and filtered by the bragg grating FP cavity, the light beam modulated by the third polarization controller is output to the polarization beam splitter, the polarization beam splitter outputs a first light beam after separating the light beam, the first light beam passes through the first delay line, then passes through the double-balanced detector, enters the radio frequency amplifier, and finally is coupled by the power splitter and fed back to the phase modulator to form a closed loop;
the second loop includes: the light beam output by the laser is output to the phase modulator after being modulated by the polarization controller PC1, the light beam modulated by the phase modulator enters the third polarization controller after being transmitted and filtered by the bragg grating FP cavity, the light beam modulated by the third polarization controller is output to the polarization beam splitter, the polarization beam splitter outputs the second light beam after separating the light beam, the second light beam enters the second delay line after passing through the tunable delay line, enters the radio frequency amplifier after passing through the double-balanced detector, and finally is coupled and fed back to the phase modulator by the power splitter to form a closed loop.
6. The microwave photonic filter based spatially symmetric optoelectronic oscillator frequency doubling system of claim 5, wherein the third polarizer and the polarization beam splitter are connected in cascade to adjust the gain and attenuation of the first and second loops.
7. The microwave photonic filter based spatially symmetric optoelectronic oscillator frequency doubling system of claim 1, wherein the laser is tunable.
8. The microwave photonic filter-based space-time symmetric optoelectronic oscillator frequency doubling system according to claim 5, wherein the Bragg grating FP cavity and the tunable laser constitute a dual-ring optoelectronic oscillation loop for microwave photonic filter filtering, and the third polarization controller PC3 is arranged at an angle with the polarization beam splitter to adjust the light intensity ratio of the two loops and control the gain and attenuation of the first loop and the second loop.
9. The microwave photonic filter based spatially symmetric optoelectronic oscillator frequency doubling system of claim 4, wherein the intensity modulator adjusts the frequency doubling factor of the output frequency doubled signal by adjusting the modulation index and the bias point.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113794087A (en) * | 2021-08-12 | 2021-12-14 | 华中科技大学 | PT (potential Transformer) symmetry-based tunable photoelectric oscillator realized by combining high-Q resonator |
| CN113867016A (en) * | 2021-09-26 | 2021-12-31 | 暨南大学 | PT symmetrical all-fiber optical isolator based on FP resonant cavity coupling system and method |
| CN113965271A (en) * | 2021-11-02 | 2022-01-21 | 中国人民解放军空军预警学院 | Oscillator implementation system based on microwave photon technology |
| CN114047495A (en) * | 2021-10-11 | 2022-02-15 | 中国人民解放军95980部队 | Distributed radar system based on photoelectric oscillation technology |
| CN114826863A (en) * | 2022-04-22 | 2022-07-29 | 四川轻化工大学 | Terahertz communication method, sending end, receiving end and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051935A (en) * | 2014-06-26 | 2014-09-17 | 中国科学院半导体研究所 | Quadruplicated frequency microwave signal generating device based on photoelectric oscillator |
| US20160372885A1 (en) * | 2015-06-17 | 2016-12-22 | Washington University | Loss engineering to improve system functionality and output |
| CN108649413A (en) * | 2018-05-15 | 2018-10-12 | 中国科学院半导体研究所 | Optical-electronic oscillator based on parity-time symmetry principle |
| CN110233410A (en) * | 2019-06-20 | 2019-09-13 | 暨南大学 | It is a kind of based on parity-time symmetry principle optical-electronic oscillator, fibre system and integrated optoelectronic systems |
-
2020
- 2020-06-19 CN CN202010568259.1A patent/CN111934162B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051935A (en) * | 2014-06-26 | 2014-09-17 | 中国科学院半导体研究所 | Quadruplicated frequency microwave signal generating device based on photoelectric oscillator |
| US20160372885A1 (en) * | 2015-06-17 | 2016-12-22 | Washington University | Loss engineering to improve system functionality and output |
| CN108649413A (en) * | 2018-05-15 | 2018-10-12 | 中国科学院半导体研究所 | Optical-electronic oscillator based on parity-time symmetry principle |
| CN110233410A (en) * | 2019-06-20 | 2019-09-13 | 暨南大学 | It is a kind of based on parity-time symmetry principle optical-electronic oscillator, fibre system and integrated optoelectronic systems |
Non-Patent Citations (3)
| Title |
|---|
| CAIHONG TENG, ET AL.: ""Fine Tunable PT-Symmetric Optoelectronic Oscillator Based on Laser Wavelength Tuning"", 《IEEE PHOTONICS TECHNOLOGY LETTERS》 * |
| WANGZHE 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"", 《IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES》 * |
| ZHIQIANG FAN, ET AL.: ""Hybrid Frequency-Tunable Parity-Time Symmetric Optoelectronic Oscillator"", 《JOURNAL OF LIGHTWAVE TECHNOLOGY》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113794087A (en) * | 2021-08-12 | 2021-12-14 | 华中科技大学 | PT (potential Transformer) symmetry-based tunable photoelectric oscillator realized by combining high-Q resonator |
| CN113867016A (en) * | 2021-09-26 | 2021-12-31 | 暨南大学 | PT symmetrical all-fiber optical isolator based on FP resonant cavity coupling system and method |
| CN113867016B (en) * | 2021-09-26 | 2023-09-22 | 暨南大学 | PT symmetrical all-fiber optical isolator based on FP resonant cavity coupling system and method |
| CN114047495A (en) * | 2021-10-11 | 2022-02-15 | 中国人民解放军95980部队 | Distributed radar system based on photoelectric oscillation technology |
| CN113965271A (en) * | 2021-11-02 | 2022-01-21 | 中国人民解放军空军预警学院 | Oscillator implementation system based on microwave photon technology |
| CN113965271B (en) * | 2021-11-02 | 2023-02-03 | 中国人民解放军空军预警学院 | Oscillator implementation system based on microwave photon technology |
| CN114826863A (en) * | 2022-04-22 | 2022-07-29 | 四川轻化工大学 | Terahertz communication method, sending end, receiving end and system |
| CN114826863B (en) * | 2022-04-22 | 2023-07-04 | 四川轻化工大学 | Terahertz communication method, sending end, receiving end and system |
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