CN114499670B - Microwave signal processing device - Google Patents
Microwave signal processing device Download PDFInfo
- Publication number
- CN114499670B CN114499670B CN202111672311.9A CN202111672311A CN114499670B CN 114499670 B CN114499670 B CN 114499670B CN 202111672311 A CN202111672311 A CN 202111672311A CN 114499670 B CN114499670 B CN 114499670B
- Authority
- CN
- China
- Prior art keywords
- optical
- microwave signal
- output end
- input end
- signal processing
- 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
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
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
-
- 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
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2575—Radio-over-fibre, e.g. radio frequency signal modulated onto an optical carrier
Abstract
The embodiment of the application discloses a microwave signal processing device. The microwave signal processing device includes: the laser is used for generating a first microwave signal, and is connected with the frequency shift conversion unit and used for performing frequency shift conversion on the first microwave signal to obtain a second microwave signal; the optical signal processing unit is connected with the frequency shift conversion unit and is used for carrying out signal conversion on the second microwave signal output by the frequency shift conversion unit to obtain a target microwave signal. The scheme provided by the application can effectively obtain the microwave signal with low phase noise.
Description
Technical Field
The application relates to the field of microwave technology application, in particular to a microwave signal processing device.
Background
The microwave frequency source with low phase noise and high stability is widely applied to the fields of radars, communication metering and the like, and is a core component of modern electronic devices. Microwave sources are generally obtained in three ways: 1. a standard crystal oscillator frequency doubling mode; 2. the low loss of the medium is utilized to design a medium resonant cavity with a high Q value, a positive feedback amplifying circuit is constructed, the phase and the amplitude are controlled, and the stability of an output signal is improved. 3. Adopts a mode of generating microwaves by light. There are mainly two types: 1. locking the ultra-stable laser on the high-stability optical resonant cavity, and converting the ultra-stable laser to a required frequency through an optical comb; 2. a method of an optoelectronic oscillator; filtering light by using an optical fiber or an optical filter, converting an optical signal into an electric signal, amplifying the electric signal, and loading the electric signal to a modulator of a laser to form an oscillation loop.
In the method, the related technology is easy to cause poor phase noise index and stability index, or the equipment volume and weight are large, the application occasion is small, or the continuous operation time is short, the light path structure is complex and the cost is high due to wavelength drift and aging of the laser.
Aiming at the problem that the prior related technology cannot effectively obtain the microwave signal with low phase noise due to the limitation of devices inside the product and among the devices, the prior technology has not been effectively solved.
Disclosure of Invention
In order to solve the above technical problems, it is desirable to provide a microwave signal processing apparatus according to an embodiment of the present application, which can solve the problem that a microwave signal with low phase noise cannot be obtained effectively due to restrictions of devices inside a product and between the devices.
An embodiment of the present application provides a microwave signal processing apparatus, including: the device comprises a laser, a frequency shift conversion unit and an optical signal processing unit, wherein the laser is used for generating a first microwave signal, and the laser is connected with the frequency shift conversion unit and used for performing frequency shift conversion on the first microwave signal to obtain a second microwave signal; the optical signal processing unit is connected with the frequency shift conversion unit and is used for carrying out signal conversion on the second microwave signal output by the frequency shift conversion unit to obtain a target microwave signal.
Alternatively, the laser is a narrow linewidth semiconductor laser.
Optionally, the frequency shift conversion unit includes: the optical fiber coupler comprises a first optical coupler, a second optical coupler, a third optical coupler, a first optical fiber ring, a second optical fiber ring, a third optical fiber ring, an optical amplifier and an optical frequency shifter, wherein a first input end of the first optical coupler is connected with an output end of a laser, a first output end of the first optical coupler is connected with an input end of the second optical coupler, an output end of the second optical coupler is respectively connected with an input end of the first optical fiber ring and an input end of the third optical fiber ring, an output end of the first optical fiber ring and an output end of the third optical fiber ring are connected with an input end of the third optical coupler, an output end of the third optical coupler is connected with an input end of the optical amplifier, an output end of the second optical fiber ring is connected with an input end of the optical frequency shifter, and an output end of the optical frequency shifter is connected with a second input end of the first optical coupler.
Further optionally, the third optocoupler comprises a plurality of optocouplers, and each optocoupler is connected in parallel.
Optionally, the frequency shift conversion unit includes: the optical fiber coupler comprises a first optical coupler, a second optical coupler, a third optical coupler, a first optical fiber ring, a second optical fiber ring, an optical amplifier and an optical frequency shifter, wherein a first input end of the first optical coupler is connected with an output end of a laser, a first output end of the first optical coupler is connected with an input end of the second optical coupler, an output end of the second optical coupler is respectively connected with an input end of the first optical fiber ring and an input end of the second optical fiber ring, an output end of the first optical fiber ring and an output end of the second optical fiber ring are connected with an input end of the third optical coupler, an output end of the third optical coupler is connected with an input end of the optical amplifier, an output end of the optical frequency shifter is connected with a second input end of the first optical coupler.
Optionally, the frequency shift conversion unit further includes: the optical amplifier control module and the optical frequency shifter control module are connected with the input end of the optical amplifier; the output end of the optical frequency shifter control module is connected with the optical frequency shifter.
Optionally, the optical signal processing unit includes: the device comprises a light detector, a microwave filter and an amplifier, wherein the second output end of the first optical coupler is connected with the input end of the light detector, the output end of the light detector is connected with the input end of the microwave filter, and the output end of the microwave filter is connected with the input end of the amplifier.
Further optionally, the amplifier is an electrical amplifier.
The embodiment of the application provides a microwave signal processing device, which is used for generating a first microwave signal through a laser, wherein the laser is connected with a frequency shift conversion unit and is used for performing frequency shift conversion on the first microwave signal to obtain a second microwave signal; the optical signal processing unit is connected with the frequency shift conversion unit and is used for carrying out signal conversion on the second microwave signal output by the frequency shift conversion unit to obtain a target microwave signal, so that the technical effect of effectively obtaining the microwave signal with low phase noise is achieved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
fig. 1 is a schematic diagram of a microwave signal processing apparatus according to an embodiment of the present application;
fig. 2 is a schematic diagram of another microwave signal processing apparatus according to an embodiment of the present application.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and in the drawings are used for distinguishing between different objects and not for limiting a particular order.
An embodiment of the present application provides a microwave signal processing apparatus, and fig. 1 is a schematic diagram of the microwave signal processing apparatus provided in the embodiment of the present application, as shown in fig. 1, including: the device comprises a laser 12, a frequency shift conversion unit 14 and an optical signal processing unit 16, wherein the laser 12 is used for generating a first microwave signal, and the laser 12 is connected with the frequency shift conversion unit 14 and used for performing frequency shift conversion on the first microwave signal to obtain a second microwave signal; the optical signal processing unit 16 is connected to the frequency shift conversion unit, and is configured to perform signal conversion on the second microwave signal output by the frequency shift conversion unit 14, so as to obtain a target microwave signal.
Alternatively, the laser 12 is a narrow linewidth semiconductor laser.
Specifically, in the embodiment of the present application, on the premise that the laser 12 is a narrow linewidth semiconductor laser, a low-phase-noise microwave signal is formed by a self-heterodyne beat frequency method through the frequency shift conversion unit 14, where the low-relative-intensity noise of the narrow linewidth laser is frequency-shifted and converted into a low-phase-noise microwave signal through the frequency shift conversion unit 14, and finally, the frequency-shifted and converted microwave signal is subjected to signal conversion through the optical signal processing unit 16, so as to finally obtain the low-phase-noise microwave signal (i.e., the target microwave signal in the embodiment of the present application). The microwave signal processing device provided by the embodiment of the application is simple and efficient, has few parameters to be adjusted, and has greater advantages compared with other types of photo-generated microwave technologies.
In summary, as shown in fig. 2, fig. 2 is a schematic diagram of another microwave signal processing apparatus according to an embodiment of the present application, which specifically includes the following steps:
in an implementation manner, the microwave signal processing device provided by the embodiment of the application comprises the following implementation manners:
mode one:
optionally, the frequency shift conversion unit 14 includes: the optical fiber device comprises a first optical coupler, a second optical coupler, a third optical coupler, a first optical fiber ring, a second optical fiber ring, a third optical fiber ring, an optical amplifier and an optical frequency shifter, wherein a first input end of the first optical coupler is connected with an output end of the laser 12, a first output end of the first optical coupler is connected with an input end of the second optical coupler, an output end of the second optical coupler is respectively connected with an input end of the first optical fiber ring and an input end of the third optical fiber ring, an output end of the first optical fiber ring and an output end of the third optical fiber ring are connected with an input end of the third optical coupler, an output end of the third optical coupler is connected with an input end of the optical amplifier, an output end of the second optical fiber ring is connected with an input end of the optical frequency shifter, and an output end of the optical frequency shifter is connected with a second input end of the first optical coupler.
Specifically, as shown in fig. 2, the laser is denoted as 1, the first optical coupler is denoted as 2, the second optical coupler is denoted as 3, and the third optical coupler is denoted as 12, the first optical fiber ring is denoted as 4, the second optical fiber ring is denoted as 6, and the third optical fiber ring is denoted as 13, the optical amplifier is denoted as 5, the optical frequency shifter is denoted as 7, the optical detector is denoted as 8, the microwave filter is denoted as 9, the electric amplifier is denoted as 14, the optical amplifier control module is denoted as 10, and the optical frequency shifter control module is denoted as 11.
The laser is a narrow linewidth semiconductor laser, the linewidth of the laser is generally below kHz, and the smaller the linewidth is, the lower the phase noise of the generated microwave signal is. Light emitted by the laser (namely, a first microwave signal in the embodiment of the application) is divided into two beams by the first optical coupler, one beam enters the optical detector, the other beam enters the second optical coupler and then enters the first optical fiber ring and the third optical fiber ring respectively, then enters the third optical coupler, is amplified by the optical amplifier and then enters the second optical fiber ring, then enters the other path of input port of the first optical coupler after passing through the optical frequency shifter, and the beam enters the first optical coupler and then is divided into two paths, wherein one path enters the optical detector, and the other path enters the second optical coupler again.
Mode two:
optionally, the third optocoupler comprises a plurality of optocouplers, and each optocoupler is connected in parallel.
In the first embodiment of the present application, the third optocoupler may be configured as a plurality of optocouplers, and each optocoupler may be connected in parallel and adjust the gain respectively.
Mode three:
optionally, the frequency shift conversion unit 14 includes: the optical fiber coupler comprises a first optical coupler, a second optical coupler, a third optical coupler, a first optical fiber ring, a second optical fiber ring, an optical amplifier and an optical frequency shifter, wherein a first input end of the first optical coupler is connected with an output end of the laser 12, a first output end of the first optical coupler is connected with an input end of the second optical coupler, an output end of the second optical coupler is respectively connected with an input end of the first optical fiber ring and an input end of the second optical fiber ring, an output end of the first optical fiber ring and an output end of the second optical fiber ring are connected with an input end of the third optical coupler, an output end of the third optical coupler is connected with an input end of the optical amplifier, an output end of the optical amplifier is connected with an input end of the optical frequency shifter, and an output end of the optical frequency shifter is connected with a second input end of the first optical coupler.
The second optical fiber ring in the first mode is deleted, so that the optical amplifier is directly connected with the optical frequency shifter.
Optionally, the frequency shift conversion unit 14 provided in the embodiment of the present application further includes: the optical amplifier control module and the optical frequency shifter control module are connected with the input end of the optical amplifier; the output end of the optical frequency shifter control module is connected with the optical frequency shifter.
Specifically, the optical amplifier control module provides a low Wen Bo voltage to the amplifier and adjusts the gain to bring the loop to an optimal operating point. The optical frequency shifter control module provides a radio frequency signal with low phase noise for the optical frequency shifter and translates the frequency of the laser. The radio frequency signal input by the optical frequency shifter control module is selected as integral multiple of the required microwave signal.
Optionally, the optical signal processing unit 16 includes: the device comprises a light detector, a microwave filter and an amplifier, wherein the second output end of the first optical coupler is connected with the input end of the light detector, the output end of the light detector is connected with the input end of the microwave filter, and the output end of the microwave filter is connected with the input end of the amplifier.
Further optionally, the amplifier is an electrical amplifier.
Specifically, as shown in FIG. 2, when the optical path is in steady state, there are two loops of light (i.e., the second microwave signal in the embodiment of the present application) within the photodetector. After passing through the photodetector, the light forms an electrical signal, which enters the microwave filter, and then is amplified by the amplifier to form a microwave signal (i.e., the target microwave signal in the embodiment of the application) for output. The bandwidth of the photodetector is selected to be the frequency point of the target microwave signal, and the output signal of the microwave filter is N times of the radio frequency signal input by the optical frequency shifter control module.
In the embodiment of the present application, the laser is selected to be a narrow-linewidth semiconductor laser, and the narrow-linewidth semiconductor laser is generally below kHz, so that the smaller the linewidth is, the lower the phase noise of the generated microwave signal is.
The embodiment of the application provides a microwave signal processing device, which is used for generating a first microwave signal through a laser, wherein the laser is connected with a frequency shift conversion unit and is used for performing frequency shift conversion on the first microwave signal to obtain a second microwave signal; the optical signal processing unit is connected with the frequency shift conversion unit and is used for carrying out signal conversion on the second microwave signal output by the frequency shift conversion unit to obtain a target microwave signal, so that the technical effect of effectively obtaining the microwave signal with low phase noise is achieved.
The foregoing description is only of the preferred embodiments of the present application, and is not intended to limit the scope of the present application.
Claims (12)
1. A microwave signal processing apparatus, comprising: the device comprises a laser, a frequency shift conversion unit and an optical signal processing unit, wherein,
the laser is used for generating a first microwave signal, and is connected with the frequency shift conversion unit and used for performing frequency shift conversion on the first microwave signal to obtain a second microwave signal;
the optical signal processing unit is connected with the frequency shift conversion unit and is used for performing signal conversion on the second microwave signal output by the frequency shift conversion unit to obtain a target microwave signal;
the frequency shift conversion unit includes: a first optical coupler, a second optical coupler, a third optical coupler, a first optical fiber ring, a second optical fiber ring, a third optical fiber ring, an optical amplifier, and an optical frequency shifter, wherein,
the first input end of the first optical coupler is connected with the output end of the laser, the first output end of the first optical coupler is connected with the input end of the second optical coupler, the output end of the second optical coupler is connected with the input end of the first optical fiber ring and the input end of the third optical fiber ring respectively, the output end of the first optical fiber ring and the output end of the third optical fiber ring are connected with the input end of the third optical coupler, the output end of the third optical coupler is connected with the input end of the optical amplifier, the output end of the optical amplifier is connected with the input end of the second optical fiber ring, the output end of the second optical fiber ring is connected with the input end of the optical frequency shifter, and the output end of the optical frequency shifter is connected with the second input end of the first optical coupler.
2. The microwave signal processing device of claim 1, wherein the laser is a narrow linewidth semiconductor laser.
3. A microwave signal processing device in accordance with claim 1, wherein the third optocoupler comprises a plurality of optocouplers, and each optocoupler is connected in parallel.
4. The microwave signal processing device according to claim 1, wherein the frequency shift conversion unit further comprises: an optical amplifier control module and an optical frequency shifter control module, wherein,
the output end of the optical amplifier control module is connected with the input end of the optical amplifier; the output end of the optical frequency shifter control module is connected with the optical frequency shifter.
5. The microwave signal processing device according to claim 1, wherein the optical signal processing unit includes: a photodetector, a microwave filter and an amplifier, wherein,
the second output end of the first optical coupler is connected with the input end of the optical detector, the output end of the optical detector is connected with the input end of the microwave filter, and the output end of the microwave filter is connected with the input end of the amplifier.
6. The microwave signal processing device of claim 5, wherein the amplifier is an electrical amplifier.
7. A microwave signal processing apparatus, comprising: the device comprises a laser, a frequency shift conversion unit and an optical signal processing unit, wherein,
the laser is used for generating a first microwave signal, and is connected with the frequency shift conversion unit and used for performing frequency shift conversion on the first microwave signal to obtain a second microwave signal;
the optical signal processing unit is connected with the frequency shift conversion unit and is used for performing signal conversion on the second microwave signal output by the frequency shift conversion unit to obtain a target microwave signal; the frequency shift conversion unit includes: a first optical coupler, a second optical coupler, a third optical coupler, a first optical fiber ring, a second optical fiber ring, an optical amplifier, and an optical frequency shifter, wherein,
the first input end of the first optical coupler is connected with the output end of the laser, the first output end of the first optical coupler is connected with the input end of the second optical coupler, the output end of the second optical coupler is respectively connected with the input end of the first optical fiber ring and the input end of the second optical fiber ring, the output end of the first optical fiber ring and the output end of the second optical fiber ring are connected with the input end of the third optical coupler, the output end of the third optical coupler is connected with the input end of the optical amplifier, the output end of the optical amplifier is connected with the input end of the optical frequency shifter, and the output end of the optical frequency shifter is connected with the second input end of the first optical coupler.
8. The microwave signal processing device of claim 7, wherein the laser is a narrow linewidth semiconductor laser.
9. The microwave signal processing device of claim 7, wherein the third optocoupler comprises a plurality of optocouplers, and each optocoupler is connected in parallel.
10. The microwave signal processing device according to claim 7, wherein the frequency shift conversion unit further comprises: an optical amplifier control module and an optical frequency shifter control module, wherein,
the output end of the optical amplifier control module is connected with the input end of the optical amplifier; the output end of the optical frequency shifter control module is connected with the optical frequency shifter.
11. The microwave signal processing device according to claim 7, wherein the optical signal processing unit includes: a photodetector, a microwave filter and an amplifier, wherein,
the second output end of the first optical coupler is connected with the input end of the optical detector, the output end of the optical detector is connected with the input end of the microwave filter, and the output end of the microwave filter is connected with the input end of the amplifier.
12. A microwave signal processing device according to claim 11, wherein the amplifier is an electrical amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111672311.9A CN114499670B (en) | 2021-12-31 | 2021-12-31 | Microwave signal processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111672311.9A CN114499670B (en) | 2021-12-31 | 2021-12-31 | Microwave signal processing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114499670A CN114499670A (en) | 2022-05-13 |
| CN114499670B true CN114499670B (en) | 2023-09-15 |
Family
ID=81507742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111672311.9A Active CN114499670B (en) | 2021-12-31 | 2021-12-31 | Microwave signal processing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114499670B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101483483A (en) * | 2009-01-08 | 2009-07-15 | 浙江大学 | Method and apparatus for generating multi-frequency microwave signal source |
| CN103840365A (en) * | 2014-03-13 | 2014-06-04 | 盐城工学院 | Tunable microwave signal generation device and method based on multi-wavelength Brillouin laser |
| CN104934840A (en) * | 2015-06-25 | 2015-09-23 | 北京无线电计量测试研究所 | Microwave oscillator based on sapphire filter |
| CN105207043A (en) * | 2015-09-23 | 2015-12-30 | 北京邮电大学 | Photoelectric oscillator |
| CN109004499A (en) * | 2018-07-17 | 2018-12-14 | 北京无线电计量测试研究所 | A kind of tunable microwave source |
| CN109273968A (en) * | 2018-11-13 | 2019-01-25 | 北京无线电计量测试研究所 | Optical-electronic oscillator device based on light splitting wire loop |
| CN110071416A (en) * | 2019-04-30 | 2019-07-30 | 北京理工大学 | A kind of microwave signal frequency up conversion device based on Frequency shifted feedback laser |
| WO2021093181A1 (en) * | 2019-11-13 | 2021-05-20 | 天津大学 | Differential cotdr distributed acoustic sensing device and method based on heterogeneous double-sideband chirped pulse |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7187870B2 (en) * | 2003-10-15 | 2007-03-06 | Oewaves, Inc. | Tunable balanced opto-electronic filters and applications in opto-electronic oscillators |
| CN201234258Y (en) * | 2008-07-15 | 2009-05-06 | 北京交通大学 | Dual path microwave/millimeter wave generator for Sagnac optical fiber loop |
| CN109309334B (en) * | 2018-11-13 | 2020-04-28 | 北京无线电计量测试研究所 | Frequency modulation-based optoelectronic oscillator and control method |
-
2021
- 2021-12-31 CN CN202111672311.9A patent/CN114499670B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101483483A (en) * | 2009-01-08 | 2009-07-15 | 浙江大学 | Method and apparatus for generating multi-frequency microwave signal source |
| CN103840365A (en) * | 2014-03-13 | 2014-06-04 | 盐城工学院 | Tunable microwave signal generation device and method based on multi-wavelength Brillouin laser |
| CN104934840A (en) * | 2015-06-25 | 2015-09-23 | 北京无线电计量测试研究所 | Microwave oscillator based on sapphire filter |
| CN105207043A (en) * | 2015-09-23 | 2015-12-30 | 北京邮电大学 | Photoelectric oscillator |
| CN109004499A (en) * | 2018-07-17 | 2018-12-14 | 北京无线电计量测试研究所 | A kind of tunable microwave source |
| CN109273968A (en) * | 2018-11-13 | 2019-01-25 | 北京无线电计量测试研究所 | Optical-electronic oscillator device based on light splitting wire loop |
| CN110071416A (en) * | 2019-04-30 | 2019-07-30 | 北京理工大学 | A kind of microwave signal frequency up conversion device based on Frequency shifted feedback laser |
| WO2021093181A1 (en) * | 2019-11-13 | 2021-05-20 | 天津大学 | Differential cotdr distributed acoustic sensing device and method based on heterogeneous double-sideband chirped pulse |
Non-Patent Citations (1)
| Title |
|---|
| 基于光纤环结构的微波光子滤波器;肖云 等;浙江大学学报(工学版);第43卷(第6期);第1168-1171页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114499670A (en) | 2022-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110011174B (en) | Optical phase locking method and device based on microwave photon frequency division | |
| CN109616855B (en) | Quadruple frequency injection locking photoelectric oscillator | |
| CN108879294B (en) | Photoelectric oscillator based on self-feedback single-period oscillation of directly-modulated semiconductor laser | |
| CN109004499B (en) | Tunable microwave source | |
| CN110729623B (en) | Microwave source | |
| CN112103755A (en) | Photoelectric oscillator based on directly-modulated light injection semiconductor laser | |
| CN113839297B (en) | Photoelectric oscillator based on injection locking effect | |
| CN109525244B (en) | Coupling type photoelectric oscillation signal generator with high-speed and adjustable frequency | |
| CN117039611B (en) | Frequency multiplication terahertz photoelectric oscillator device and oscillation method thereof | |
| CN106785811B (en) | Mutual coupling photoelectric oscillator | |
| CN116154598B (en) | Photoelectric oscillator based on OAM and space-time symmetry break and oscillation method | |
| CN114499670B (en) | Microwave signal processing device | |
| Maleki | Optoelectronic oscillators for microwave and mm-wave generation | |
| CN111478176A (en) | Waveform generating device and method based on semiconductor laser unit monocycle oscillation | |
| CN101794952B (en) | Accurately-tunable optical fiber laser microwave source with low phase noise and narrow line width | |
| CN110112636B (en) | Device for generating double Brillouin frequency microwave signals based on double-core optical fiber | |
| CN114498273B (en) | Microwave signal processing device | |
| CN110707510A (en) | Fourier domain mode-locked photoelectric oscillator based on stimulated Brillouin scattering | |
| CN115425512A (en) | Microwave generation method based on monolithic integrated orthogonal double soliton optical comb | |
| CN210780814U (en) | Microwave signal frequency doubling device based on double parallel Mach-Zehnder modulator | |
| CN110718835B (en) | Novel microwave source | |
| CN111224717B (en) | Microwave signal frequency doubling device and method | |
| CN208970926U (en) | A kind of high power narrow line width regulatable glistening light of waves fibre laser | |
| CN110416861B (en) | Microwave source and control method thereof | |
| CN105490135A (en) | Millimeter wave frequency generating device |
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 |