CN114614903B - Photon signal generator and generation method - Google Patents
Photon signal generator and generation method Download PDFInfo
- Publication number
- CN114614903B CN114614903B CN202210328066.8A CN202210328066A CN114614903B CN 114614903 B CN114614903 B CN 114614903B CN 202210328066 A CN202210328066 A CN 202210328066A CN 114614903 B CN114614903 B CN 114614903B
- Authority
- CN
- China
- Prior art keywords
- signal
- optical
- oscillator
- photoelectric
- mach
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000003287 optical effect Effects 0.000 claims abstract description 152
- 230000010355 oscillation Effects 0.000 claims abstract description 29
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 230000035559 beat frequency Effects 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 claims abstract description 3
- 230000010287 polarization Effects 0.000 claims description 39
- 230000005693 optoelectronics Effects 0.000 claims description 21
- 239000000835 fiber Substances 0.000 claims description 8
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 3
- 230000010354 integration Effects 0.000 abstract description 5
- 238000001228 spectrum Methods 0.000 abstract description 4
- 230000001629 suppression Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 7
- 230000003595 spectral effect Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010291 electrical method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/5165—Carrier suppressed; Single sideband; Double sideband or vestigial
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/516—Details of coding or modulation
- H04B10/548—Phase or frequency modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/70—Photonic quantum communication
Abstract
The present disclosure provides a photon signal generator comprising: a laser for generating an optical carrier; an arbitrary waveform generator for generating a baseband phase-encoded microwave signal or a parabolic microwave signal; the first Mach-Zehnder modulator is used for modulating the microwave signal generated by the random waveform generator onto an optical carrier wave through an electro-optic effect to form a first optical signal; the photoelectric oscillator is used for generating a local oscillator signal and modulating the local oscillator signal on an optical carrier to form a + -1-order optical sideband of carrier suppression, namely a second optical signal; and the first photoelectric detector is used for performing photoelectric conversion on the first optical signal and the second optical signal after beat frequency to form a phase coding signal or a double-chirp signal. The method and the device can generate the phase coding signal and the double-chirp signal through the selection of the arbitrary waveform generator to the type of the transmitting signal, and simultaneously, due to the addition of the photoelectric oscillator, the generated local oscillation signal has low phase noise and high signal spectrum quality, and has the potential of photoelectric integration.
Description
Technical Field
The present disclosure relates to the field of microwave photonics, and in particular to a photon signal generator and generation method.
Background
In modern radar systems, phase-coded signals and double chirp signals are widely used for target detection and tracking due to their high pulse compression capability. The phase coding signal and the double chirp signal generated based on the traditional electrical method are limited by electronic bottlenecks, often have lower carrier frequency and narrower bandwidth, have low frequency tunability, and cannot meet the requirements of rapidly-developed radar systems. The phase coding signal and the double chirp signal generated based on the microwave photonics technology overcome the limitation of electronic bottleneck, not only have higher carrier frequency and larger bandwidth, but also greatly improve the electromagnetic interference resistance and the frequency tunability, thus attracting attention.
Therefore, if a microwave photon system can generate a phase coding signal and a double chirp signal, and has photoelectric integration potential, the method has important significance for a modern multifunctional radar system. Therefore, the construction of the multimode microwave signal generator based on the photoelectric oscillator has a huge application prospect.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present disclosure provides a photon signal generator, which can generate a phase-coded signal and a dual-chirp signal by selecting a type of a transmitting signal by an arbitrary waveform generator, and meanwhile, compared with a traditional microwave source, the addition of a photoelectric oscillator generates a local oscillator signal with low phase noise and high signal spectrum quality, so that the photon signal generator of the present application has the potential of photoelectric integration.
The present disclosure provides a photon signal generator comprising: a laser for generating an optical carrier; an arbitrary waveform generator for generating a baseband phase-encoded microwave signal or a parabolic microwave signal; the first Mach-Zehnder modulator is used for modulating the microwave signal generated by the random waveform generator onto an optical carrier wave through an electro-optic effect to form a first optical signal; the photoelectric oscillator is used for generating a local oscillator signal and modulating the local oscillator signal on an optical carrier to form a + -1-order optical sideband of carrier suppression, namely a second optical signal; and the first photoelectric detector is used for performing photoelectric conversion on the first optical signal and the second optical signal after beat frequency to form a phase coding signal or a double-chirp signal.
Optionally, the optoelectronic oscillator comprises: a second Mach-Zehnder modulator for receiving and modulating the local oscillator signal to form a second optical signal; an optical coupler for dividing signals output from the first Mach-Zehnder modulator and the second Mach-Zehnder modulator into two paths; a single mode fiber for increasing loop delay, introducing a mode interval as an energy storage medium of the photoelectric oscillator; the second photoelectric detector is used for carrying out photoelectric conversion on the optical signals in the photoelectric oscillator loop and generating a double-frequency local oscillation signal; and the filter is used for selecting the center frequency of the oscillating signal in the photoelectric oscillator and ensuring that the oscillating signal is a single-frequency signal.
Optionally, the optoelectronic oscillator further comprises: the optical amplifier is used for amplifying one path of signal output by the optical coupler and improving loop gain so as to enable the photoelectric oscillator to start vibrating stably; and the electric amplifier is used for amplifying the microwave signal output by the second photoelectric detector so as to enable the photoelectric oscillator to stably oscillate.
Optionally, the two optical signals generated by the mach-zehnder modulator are perpendicular to each other.
Optionally, the optoelectronic oscillator further comprises: the first polarization controller is used for adjusting the polarization state of one path of signal output by the optical coupler; and the first polarizer is used for screening out signals of the polarization state of the second optical signal in one path of signals output by the optical coupler.
Optionally, the method further comprises: the second polarization controller is used for adjusting the polarization state of the other signal output by the optical coupler; and the second polarizer is used for polarizing the first optical signal and the second optical signal with the vertical polarization state in the other path of signals output by the optical coupler to the same polarization state.
Optionally, the optoelectronic oscillator further comprises: and the electric frequency divider is used for ensuring that the signal applied to the Mach-Zehnder modulator is a fundamental frequency local oscillation signal.
Optionally, the optoelectronic oscillator further comprises: 180 ° bridge for ensuring that the modulator operates in push-pull mode.
The present disclosure also provides a photon signal generation method, comprising: s1, respectively inputting an optical carrier wave generated by a laser and a baseband phase coding signal or a parabolic microwave signal generated by an arbitrary waveform generator into a first Mach-Zehnder modulator to obtain a first optical signal, and inputting the first optical signal into a first photoelectric detector; s2, inputting the second optical signal obtained from the photoelectric oscillator into the first photoelectric detector to obtain a phase encoding microwave signal or a double-chirp microwave signal with the center frequency being the frequency of the local oscillation signal.
Optionally, S2 includes: s21, inputting the local oscillation signal into a second Mach-Zehnder modulator to form a second optical signal; s22, inputting the first optical signal and the second optical signal into an optical coupler together to form two paths of optical signals; s23, processing one path of signals output by the optical coupler by using a single-mode fiber, a second photoelectric detector, a filter, an optical amplifier, an electric amplifier, a first polarization controller, a first polarizer, an electric frequency divider and a 180-degree bridge to form local oscillation signals, and inputting the local oscillation signals into a second Mach-Zehnder modulator to form the second optical signals; s24, using a second polarization controller and a second polarizer to polarize the first optical signal and the second optical signal which are vertically polarized in the other path of signals output by the optical coupler to the same polarization state, and forming an optical carrier wave of which the local oscillation signal intensity is modulated by + -1-order optical sidebands and baseband phase coded signals or parabolic microwave signals are phase modulated.
The photon signal generator disclosed by the application can generate a phase coding signal and a double-chirp signal through the selection of the type of the emission signal by the arbitrary waveform generator, meanwhile, compared with a traditional microwave source, the photon signal generator has the advantages that the generated local oscillator signal has low phase noise and high signal spectrum quality due to the addition of the photoelectric oscillator, and meanwhile, the photon signal generator has the potential of photoelectric integration.
The photon signal generator disclosed by the application realizes different modulation states of two vertical polarization states of an optical signal by utilizing the double-polarization double-drive Mach-Zehnder modulator, is suitable for a multifunctional radar system, and has wide application prospect.
Drawings
FIG. 1 schematically illustrates a schematic structure of a photon signal generator in accordance with an embodiment of the present disclosure;
fig. 2 schematically illustrates a structural schematic diagram of a mach-zehnder modulator according to an embodiment of the present disclosure;
fig. 3 (a) to (c) schematically show spectral diagrams of the inside and the output of the mach-zehnder modulator 5 according to an embodiment of the present disclosure;
FIG. 3 (d) schematically illustrates a spectral diagram of a first polarizer output according to an embodiment of the present disclosure;
FIG. 3 (e) schematically illustrates a spectral diagram of a first photodetector output according to an embodiment of the disclosure;
FIG. 4 schematically illustrates a flow chart of a photon signal generation method according to an embodiment of the disclosure;
in the figure, a laser-1, an arbitrary waveform generator-2, an electric power divider-3, a voltage source-4, a Mach-Zehnder modulator-5, an optical coupler-6, a first polarization controller-7 a, a second polarization controller-7 b, a first polarizer-8 a, a second polarizer-8 b, an optical amplifier-9, a single mode optical fiber-10, a second photodetector-11 a, a first photodetector-11 b, an electric amplifier-12, a filter-13, an electric frequency divider-14, and a 180 DEG bridge-15.
Detailed Description
Hereinafter, embodiments of the present disclosure will be described with reference to the accompanying drawings. It should be understood that the description is only exemplary and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the concepts of the present disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The terms "comprises," "comprising," and/or the like, as used herein, specify the presence of stated features, steps, operations, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, or components.
Fig. 1 schematically illustrates a schematic structure of a photon signal generator according to an embodiment of the present disclosure.
Embodiments of the present disclosure provide a photon signal generator comprising: a laser 1 for generating an optical carrier wave; an arbitrary waveform generator 2 for generating a baseband phase-encoded microwave signal or a parabolic microwave signal; a first mach-zehnder modulator for modulating the microwave signal generated by the arbitrary waveform generator 2 onto an optical carrier wave by an electro-optical effect to form a first optical signal; the photoelectric oscillator is used for generating a local oscillator signal and modulating the local oscillator signal on an optical carrier to form a + -1-order optical sideband of carrier suppression, namely a second optical signal; the first photodetector 11b is configured to beat the first optical signal and the second optical signal, and then photoelectrically convert the first optical signal and the second optical signal to form a phase encoded signal or a double chirp signal.
The photon signal generator disclosed by the disclosure can generate a phase coding signal and a double chirp signal through the selection of an arbitrary waveform generator to a transmitting signal type, meanwhile, compared with a traditional microwave source, the addition of the photoelectric oscillator generates a local oscillator signal with low phase noise and high signal spectrum quality, and meanwhile, the photon signal generator has the potential of photoelectric integration.
Further, the optoelectronic oscillator includes: a second Mach-Zehnder modulator for receiving and modulating the local oscillator signal to form a second optical signal; an optical coupler 6 for dividing the signals output from the first mach-zehnder modulator and the second mach-zehnder modulator into two paths; a single mode fiber 10 for increasing loop delay, introducing a mode interval as an energy storage medium of the optoelectronic oscillator; a second photodetector 11a for photoelectrically converting the optical signal in the photoelectric oscillator loop to generate a doubled local oscillation signal; a filter 13 for selecting the center frequency of the oscillation signal in the photoelectric oscillator and ensuring it to be a single frequency signal.
Wherein the optical output end of the laser 1 is connected with the optical input end of the mach-zehnder modulator 5, the optical output end of the mach-zehnder modulator 5 is connected with the optical input end of the optical coupler 6, the optical coupler 6 has two optical output ends, namely a first output end and a second output end, wherein the first output end is connected with the input end of the first photoelectric detector 11b; the second output end is connected with the input end of the second photoelectric detector 11a, the output end of the second photoelectric detector 11a is connected with the input end of the filter 13, and the output end of the filter 13 is connected with the second radio frequency input end of the Mach-Zehnder modulator 5.
Further, the optoelectronic oscillator further includes: the optical amplifier 9 is used for amplifying one path of signal output by the optical coupler 6 and improving loop gain so as to enable the photoelectric oscillator to start vibrating stably; and an electric amplifier 12 for amplifying the microwave signal output from the second photodetector 11a to stably oscillate the photoelectric oscillator.
Wherein, the optical amplifier 9 is disposed between the optical coupler 6 and the second photodetector 11a, the input end of the optical amplifier 9 is connected with the output end of the optical coupler 6, and the output end of the optical amplifier 9 is connected with the input end of the second photodetector 11 a. The electric amplifier 12 is disposed between the second photodetector 11a and the filter 13, and an input end of the electric amplifier 12 is connected to an output end of the second photodetector 11a, and an output end of the electric amplifier 12 is connected to an input end of the filter 13.
Further, the two optical signals generated by the mach-zehnder modulator 5 are perpendicular to each other.
Further, the optoelectronic oscillator further includes: a first polarization controller 7a for adjusting the polarization state of one signal outputted from the optical coupler 6; and the first polarizer 8a is used for screening out the signal of the second optical signal polarization state in one path of signal output by the optical coupler 6.
Further, the method further comprises the following steps: a second polarization controller 7b for adjusting the polarization state of the other signal outputted from the optical coupler 6; and a second polarizer 8b for polarizing the first optical signal and the second optical signal vertically polarized in the other path of signal outputted from the optical coupler 6 to the same polarization state.
Further, the optoelectronic oscillator further includes: and an electrical frequency divider 14 for converting the frequency-doubled local oscillation signal obtained by the photoelectric conversion into a fundamental frequency signal, and ensuring that the signal applied to the mach-zehnder modulator is the fundamental frequency signal.
Further, the optoelectronic oscillator further includes: 180 ° bridge 15 for ensuring that the modulator operates in push-pull mode.
Fig. 2 schematically shows a schematic structure of the mach-zehnder modulator 5 according to an embodiment of the present disclosure.
Wherein the mach-zehnder modulator 5 comprises two vertically polarized dual-driven mach-zehnder modulators (x-DDMZM and y-DDMZM), wherein two radio frequency ports of the x-DDMZM are driven by microwave signals from an arbitrary waveform generator 2 (AWG), i.e. the first mach-zehnder modulator, two radio frequency ports of the y-DDMZM are driven by local oscillator signals (LO) from an optoelectronic oscillator, and the phase difference of the two LO signals is 180 °, i.e. the second mach-zehnder modulator.
Fig. 3 a-c schematically show spectral diagrams of the interior and output of a mach-zehnder modulator 5 according to an embodiment of the present disclosure.
Fig. 3d schematically shows a spectral diagram of the output of the first polarizer 8b according to an embodiment of the present disclosure.
Fig. 3e schematically shows a spectral diagram of the output of the first photodetector 11b according to an embodiment of the disclosure.
As shown in fig. 1, the output end of the arbitrary waveform generator 2 is connected to the first rf input end of the mach-zehnder modulator 5, the power divider 3 is disposed between the two rf input ends of the first rf input end of the mach-zehnder modulator 5, and divides the microwave signal output by the arbitrary waveform generator 2 into two parts, that is, two rf ports of the first rf input end of the x-DDMZM, and at the same time, the dc bias voltage port of the x-DDMZM of the mach-zehnder modulator 5 is connected to one port of the voltage source 4, and the voltage source 4 is a three-channel dc voltage source, so that the mach-zehnder modulator 5 is biased at the position of the maximum transmission point, thereby ensuring that the x-DDMZM operates in a phase modulation state, which is equivalent to one Phase Modulator (PM), so that the optical signal output by the x-DDMZM is a phase modulated optical carrier, as shown in fig. 3 a.
Through the 180 DEG bridge, two radio frequency ports of the y-DDMZM are driven by a local oscillation signal LO generated by the photoelectric oscillator, a direct current bias voltage port of the y-DDMZM is connected with the other port of the voltage source 4 and is biased at the position of the minimum transmission point, and the optical signal output by the y-DDMZM is a double sideband of carrier suppression because the y-DDMZM works in a push-pull state, as shown in figure 3 b.
Thus, the mach-zehnder modulator 5 in the present application is a dual-polarization dual-driven mach-zehnder modulator, and at the output port of the mach-zehnder modulator 5, the optical signal is composed of a first optical signal in the x-polarization state and a second optical signal in the y-polarization state, as shown in fig. 3 c.
The optical signals of the x and y polarization states passing through the second polarization controller 7b and the second polarizer 8b are combined into the same polarization state as shown in fig. 3 d.
Finally, the phase code signal or the double chirp signal is finally obtained through photoelectric conversion of the first photodetector 11b, as shown in fig. 3e, so that the generation of the multimode microwave photon signal based on the photoelectric oscillator is realized.
The photon signal generator disclosed by the disclosure realizes different modulation states of two perpendicular polarization states of an optical signal by using the double-polarization double-drive Mach-Zehnder modulator, is suitable for a multifunctional radar system, and has wide application prospect.
In some embodiments, the laser 1 is a narrow linewidth semiconductor laser.
In some embodiments, the arbitrary waveform generator 2 is a low frequency arbitrary waveform generator.
In some embodiments, the power divider 3 is a 1 x 2 3-dB power divider.
In some embodiments, the optocoupler 6 is a 1×2 3-dB optocoupler.
In some embodiments, the first polarization controller 7a and/or the second polarization controller 7b are wave plate polarization controllers.
In some embodiments, the length of the single mode fiber 10 is 4km.
In some embodiments, the first photodetector 11b and/or the second photodetector 11a are photodiodes or photomultiplier tubes.
In some embodiments, the filter 13 is a tunable narrow bandpass electrical filter having a bandwidth of tens of MHz.
In some embodiments, the electrical divider 14 is a half divider.
Fig. 4 schematically illustrates a flow chart of a photon signal generation method according to an embodiment of the disclosure.
Embodiments of the present disclosure also provide a photon signal generation method, as shown in fig. 4, including:
s1, respectively inputting an optical carrier wave generated by a laser 1 and a baseband phase coding signal or a parabolic microwave signal generated by an arbitrary waveform generator 2 into a first Mach-Zehnder modulator to obtain a first optical signal, and inputting the first optical signal into a first photoelectric detector 11b;
s2, inputting the local oscillation signal into a second Mach-Zehnder modulator to form a second optical signal;
s3, inputting the first optical signal and the second optical signal into the optical coupler 6 together to form two paths of optical signals;
s4, processing one path of signals output by the optical coupler 6 by using a single-mode fiber 10, a second photoelectric detector 11a, a filter 13, an optical amplifier 9, an electric amplifier 12, a first polarization controller 7a, a first polarizer 8a, an electric frequency divider 14 and a 180-degree bridge 15 to form local oscillation signals, and inputting the local oscillation signals into a second Mach-Zehnder modulator to form the second optical signals;
s5, using a second polarization controller 7b and a second polarizer 8b to polarize a first optical signal and a second optical signal in the other path of signals output by the optical coupler 6 in the vertical polarization state to the same polarization state, so as to form an optical carrier wave of which the local oscillation signal intensity is modulated by + -1-order optical sidebands and baseband phase coding signals or parabolic microwave signals are modulated in phase;
s6, inputting the optical carrier wave modulated by the + -1-order optical sideband modulated by the local oscillation signal intensity and the baseband phase coding signal or the parabolic microwave signal phase into the first photoelectric detector 11b to obtain the phase coding microwave signal or the double-chirp microwave signal with the central frequency being the local oscillation signal frequency.
While the foregoing embodiments have been described in some detail for purposes of clarity of understanding, it will be understood that the foregoing embodiments are merely illustrative of the application and are not intended to limit the application, and that any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the present disclosure are intended to be included within the scope of the present disclosure.
Claims (9)
1. A photon signal generator comprising:
a laser (1) for generating an optical carrier;
an arbitrary waveform generator (2) for generating a baseband phase-encoded microwave signal or a parabolic microwave signal;
a first Mach-Zehnder modulator for modulating the microwave signal generated by the arbitrary waveform generator (2) onto the optical carrier wave through an electro-optic effect to form a first optical signal;
the photoelectric oscillator is used for generating a local oscillator signal and modulating the local oscillator signal on the optical carrier to form a carrier suppressed + -1-order optical sideband, namely a second optical signal; the optoelectronic oscillator includes:
a second mach-zehnder modulator configured to receive and modulate a local oscillator signal to form the second optical signal; an optical coupler (6) for dividing the signals output from the first and second mach-zehnder modulators into two paths; a single mode fiber (10) for increasing loop delay, introducing a mode interval as an energy storage medium of the optoelectronic oscillator; a second photodetector (11 a) for photoelectrically converting an optical signal in the photoelectric oscillator loop to generate a doubled local oscillation signal; a filter (13) for selecting the center frequency of the oscillation signal in the photoelectric oscillator and ensuring that the oscillation signal is a single frequency signal;
and the first photoelectric detector (11 b) is used for performing photoelectric conversion on the first optical signal and the second optical signal after beat frequency to form a phase coding signal or a double-chirp signal.
2. The photon signal generator of claim 1 wherein the optoelectronic oscillator further comprises:
the optical amplifier (9) is used for amplifying one path of signal output by the optical coupler (6) and improving loop gain so as to enable the photoelectric oscillator to stably start vibrating;
and an electric amplifier (12) for amplifying the microwave signal output from the second photodetector (11 a) to stably oscillate the photoelectric oscillator.
3. A photon signal generator as claimed in claim 1, characterized in that the two optical signals generated by the mach-zehnder modulator (5) are perpendicular to each other.
4. A photon signal generator as in claim 3 wherein the optoelectronic oscillator further comprises:
a first polarization controller (7 a) for adjusting the polarization state of one signal outputted from the optical coupler (6);
and the first polarizer (8 a) is used for screening out the signal of the second optical signal polarization state in one path of signal output by the optical coupler (6).
5. The photon signal generator as in claim 4 further comprising:
a second polarization controller (7 b) for adjusting the polarization state of the other signal outputted from the optical coupler (6);
and the second polarizer (8 b) is used for polarizing the first optical signal and the second optical signal which are vertically polarized in the other path of signals output by the optical coupler (6) to the same polarization state.
6. The photon signal generator of claim 1 wherein the optoelectronic oscillator further comprises: an electrical frequency divider (14) for ensuring that the signal applied to the mach-zehnder modulator is a baseband local oscillator signal.
7. The photon signal generator of claim 1 wherein the optoelectronic oscillator further comprises: a 180 DEG bridge (15) for ensuring that the modulator operates in push-pull mode.
8. A method of photon signal generation comprising:
s1, respectively inputting an optical carrier wave generated by a laser (1) and a baseband phase coding signal or a parabolic microwave signal generated by an arbitrary waveform generator (2) into a first Mach-Zehnder modulator to obtain a first optical signal, and inputting the first optical signal into a first photoelectric detector (11 b);
s2, inputting a second optical signal obtained from the photoelectric oscillator into a first photoelectric detector (11 b) to obtain a phase encoding microwave signal or a double-chirp microwave signal with the center frequency being the frequency of the local oscillation signal; wherein,
the optoelectronic oscillator includes: a second mach-zehnder modulator configured to receive and modulate a local oscillator signal to form the second optical signal; an optical coupler (6) for dividing the signals output from the first and second mach-zehnder modulators into two paths; a single mode fiber (10) for increasing loop delay, introducing a mode interval as an energy storage medium of the optoelectronic oscillator; a second photodetector (11 a) for photoelectrically converting an optical signal in the photoelectric oscillator loop to generate a doubled local oscillation signal; and a filter (13) for selecting the center frequency of the oscillation signal in the photoelectric oscillator and ensuring that the oscillation signal is a single frequency signal.
9. The photon signal generation method according to claim 8, wherein S2 comprises:
s21, inputting the local oscillation signal into a second Mach-Zehnder modulator to form a second optical signal;
s22, inputting the first optical signal and the second optical signal into an optical coupler (6) together to form two paths of optical signals;
s23, processing one path of signals output by the optical coupler (6) by using a single-mode fiber (10), a second photoelectric detector (11 a), a filter (13), an optical amplifier (9), an electric amplifier (12), a first polarization controller (7 a), a first polarizer (8 a), an electric frequency divider (14) and a 180-degree bridge (15) to form local oscillation signals, and inputting the local oscillation signals into a second Mach-Zehnder modulator to form the second optical signals;
s24, using a second polarization controller (7 b) and a second polarizer (8 b) to polarize a first optical signal and a second optical signal which are vertically polarized in the other path of signals output by the optical coupler (6) to the same polarization state, so as to form an optical carrier wave of which the local oscillation signal intensity is modulated by + -1-order optical sidebands and baseband phase coded signals or parabolic microwave signals are phase modulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210328066.8A CN114614903B (en) | 2022-03-29 | 2022-03-29 | Photon signal generator and generation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210328066.8A CN114614903B (en) | 2022-03-29 | 2022-03-29 | Photon signal generator and generation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114614903A CN114614903A (en) | 2022-06-10 |
| CN114614903B true CN114614903B (en) | 2023-12-15 |
Family
ID=81866821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210328066.8A Active CN114614903B (en) | 2022-03-29 | 2022-03-29 | Photon signal generator and generation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114614903B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107395284A (en) * | 2017-07-11 | 2017-11-24 | 华东师范大学 | Without local oscillator Low phase noise microwave signal optical frequency-doubling generation device and method |
| CN107947864A (en) * | 2017-12-04 | 2018-04-20 | 大连理工大学 | A kind of photon microwave down-conversion device and method |
| CN109831258A (en) * | 2019-02-14 | 2019-05-31 | 浙江大学 | A kind of photon radio-frequency receiver inhibiting function with image frequency |
| CN110350980A (en) * | 2019-07-16 | 2019-10-18 | 南京航空航天大学 | The radar detection method and device of bandwidth synthesis after being gone tiltedly based on microwave photon auxiliary |
| CN112152720A (en) * | 2020-09-25 | 2020-12-29 | 中国科学院半导体研究所 | Multi-frequency-band double-chirp microwave signal generation and optical fiber dispersion resistant transmission system and method |
| CN113489551A (en) * | 2021-07-05 | 2021-10-08 | 吉林大学 | Centimeter wave/millimeter wave ultra-wideband signal generating device |
| CN113938210A (en) * | 2021-09-27 | 2022-01-14 | 华中科技大学 | Method and equipment for generating frequency double-chirp microwave waveform |
| CN114124231A (en) * | 2020-08-27 | 2022-03-01 | 中国科学院半导体研究所 | Parallel type multiband multi-format microwave signal generating device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4646048B2 (en) * | 2001-03-02 | 2011-03-09 | 日本電気株式会社 | Single sideband signal light generation method and single sideband signal light generation circuit |
| US6900707B2 (en) * | 2001-11-30 | 2005-05-31 | Pacific Wave Industries, Inc. | Photonic RF phase shifter with mitigated RF power fluctuation and devices incorporating the same |
-
2022
- 2022-03-29 CN CN202210328066.8A patent/CN114614903B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107395284A (en) * | 2017-07-11 | 2017-11-24 | 华东师范大学 | Without local oscillator Low phase noise microwave signal optical frequency-doubling generation device and method |
| CN107947864A (en) * | 2017-12-04 | 2018-04-20 | 大连理工大学 | A kind of photon microwave down-conversion device and method |
| CN109831258A (en) * | 2019-02-14 | 2019-05-31 | 浙江大学 | A kind of photon radio-frequency receiver inhibiting function with image frequency |
| CN110350980A (en) * | 2019-07-16 | 2019-10-18 | 南京航空航天大学 | The radar detection method and device of bandwidth synthesis after being gone tiltedly based on microwave photon auxiliary |
| CN114124231A (en) * | 2020-08-27 | 2022-03-01 | 中国科学院半导体研究所 | Parallel type multiband multi-format microwave signal generating device |
| CN112152720A (en) * | 2020-09-25 | 2020-12-29 | 中国科学院半导体研究所 | Multi-frequency-band double-chirp microwave signal generation and optical fiber dispersion resistant transmission system and method |
| CN113489551A (en) * | 2021-07-05 | 2021-10-08 | 吉林大学 | Centimeter wave/millimeter wave ultra-wideband signal generating device |
| CN113938210A (en) * | 2021-09-27 | 2022-01-14 | 华中科技大学 | Method and equipment for generating frequency double-chirp microwave waveform |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114614903A (en) | 2022-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Li et al. | Photonic generation of phase-coded millimeter-wave signal with large frequency tunability using a polarization-maintaining fiber Bragg grating | |
| CN110572214B (en) | Frequency modulation signal generation method based on optical injection locking | |
| CN107370541B (en) | Frequency-tunable is without local oscillator phase-coded signal optics generation device and method | |
| CN111048969B (en) | Frequency doubling photoelectric oscillator based on stimulated Brillouin scattering effect | |
| CN112152720A (en) | Multi-frequency-band double-chirp microwave signal generation and optical fiber dispersion resistant transmission system and method | |
| Li et al. | High-efficiency photonic microwave downconversion with full-frequency-range coverage | |
| CN114124231B (en) | Parallel multi-band multi-lattice microwave signal generator | |
| CN114614903B (en) | Photon signal generator and generation method | |
| Li et al. | Photonic generation of dual-chirp microwave waveforms based on a tunable optoelectronic oscillator | |
| Lin et al. | Photonic microwave multi-band frequency conversion based on a DP-QPSK modulator for satellite communication | |
| CN115865211A (en) | Microwave frequency shift method and device based on light injection locking | |
| CN111106873A (en) | Local oscillator signal generating system applied to communication satellite forwarding system | |
| CN116154598A (en) | Photoelectric oscillator based on OAM and space-time symmetry break and oscillation method | |
| CN112098951A (en) | Baseband noise-free double-frequency phase coding pulse optical generation method capable of inhibiting power periodic fading | |
| CN112242872B (en) | Method for generating double-frequency triangular wave and square wave of polarization shunt multiplexing Mach-Zehnder modulator | |
| Zhu et al. | Stimulated-Brillouin-scattering-based arbitrarily phase coded microwave waveform transmitter with anti-dispersion transmission | |
| Zhu et al. | A background-free phase-coded microwave pulse generator by optoelectronic oscillation | |
| CN112180356A (en) | Method and device for generating double-chirp linear frequency modulation signal | |
| Liu | An investigation about optical millimeter-wave generation technology | |
| Liu et al. | Generating ultra-wideband LFM waveforms with large time duration based on frequency-sweeping optoelectronic oscillation | |
| Li et al. | Broadband frequency-doubled linearly chirped microwave waveform generation based on Fourier domain mode-locked optoelectronic oscillator | |
| CN115642959B (en) | Phase coding signal generating device based on microwave photon technology | |
| Wang et al. | All-optical up-conversion for 2.5-Gb/s signals in ROF systems based on FWM effect in HNLF | |
| CN214204259U (en) | Optical pump spin VCSEL periodic oscillation millimeter wave signal generating device | |
| CN114070409B (en) | Triangular waveform generator with adjustable symmetry factor based on dual polarization modulator |
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 |