CN111427172A - Microwave photon filter based on spectrum segmentation light source - Google Patents

Microwave photon filter based on spectrum segmentation light source Download PDF

Info

Publication number
CN111427172A
CN111427172A CN202010272426.8A CN202010272426A CN111427172A CN 111427172 A CN111427172 A CN 111427172A CN 202010272426 A CN202010272426 A CN 202010272426A CN 111427172 A CN111427172 A CN 111427172A
Authority
CN
China
Prior art keywords
light source
microwave
optical
spectrum
fiber
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.)
Pending
Application number
CN202010272426.8A
Other languages
Chinese (zh)
Inventor
胡晶晶
谷一英
李昊阳
李建
赵明山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dalian University of Technology
Original Assignee
Dalian University of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dalian University of Technology filed Critical Dalian University of Technology
Priority to CN202010272426.8A priority Critical patent/CN111427172A/en
Publication of CN111427172A publication Critical patent/CN111427172A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/011—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  in optical waveguides, not otherwise provided for in this subclass
    • G02F1/0115—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  in optical waveguides, not otherwise provided for in this subclass in optical fibres
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/0136—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  for the control of polarisation, e.g. state of polarisation [SOP] control, polarisation scrambling, TE-TM mode conversion or separation
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/21—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  by interference
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/21—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  by interference
    • G02F1/212—Mach-Zehnder type

Landscapes

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)
  • Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)

Abstract

The invention relates to the technical field of microwave photons, and provides a microwave photon filter based on a spectrum segmentation light source, which comprises: the device comprises a broadband light source, an inclined fiber grating, a polarization controller, a coupler, a spectrum analyzer, an electro-optical intensity modulator, an erbium-doped fiber amplifier, a dispersion compensation fiber, a photoelectric detector and a vector network analyzer. The invention can realize a band-pass microwave photon filter with a high Q value and realize the band-pass filtering function of large-range frequency signals.

Description

Microwave photon filter based on spectrum segmentation light source
Technical Field
The invention relates to the technical field of microwave photons, in particular to a microwave photon filter based on a spectrum segmentation light source.
Background
In recent decades, microwave photonic signal processing techniques for transmitting and processing radio frequency signals using photonic technology have been rapidly developed, and have unique advantages over conventional microwave technology. The microwave photon filter has the same filtering function as the traditional filter in a radio frequency link or a system, and the microwave photon filtering technology has the advantages of low loss, high bandwidth, electromagnetic interference resistance and the like, and can realize the functions of high speed, adjustability, reconfigurability and the like.
There are a number of disadvantages with conventional light source array filters, first: the number of light sources of the filter is in direct proportion to the Q value in the link, so that more laser sources are needed to realize the high-Q-value filter, and the cost is higher; secondly, the method comprises the following steps: such filters have a periodic frequency response; thirdly, the method comprises the following steps: if the tunability of such a filter is achieved, the free spectral range and the shape of the filter will be changed.
Therefore, under such background conditions, tunable bandpass microwave photonic filters for spectrum-splitting light sources have been developed. The wide-spectrum light source has the characteristics of easiness in realization, low cost and the like, is often used in a reconfigurable and tunable microwave photonic filter, can overcome the defects of the traditional light source array filter, and the individual 'wavelengths' formed by the spectrum of the wide-spectrum light source after being divided are equivalent to taps, so that the continuous light sampling is different from general discrete sampling, the free Frequency Spectrum Range (FSR) of the continuous light sampling tends to be infinite, and a higher Q value can be realized. Under the condition that a broadband light source and an inclined fiber grating are determined, the central frequency and the bandwidth of the filter can be adjusted by changing the dispersion value of a dispersion fiber in a link, and the tunability of the filter is realized.
Among existing microwave photonic filter structures, one is an automatically tunable transverse notch filter based on a uniform fiber bragg grating and a broadband light source. Tunability can be achieved by stretching the fiber using a grating written in series. Also, high side lobe suppression can be achieved by introducing tunable attenuators in the parallel configuration of the gratings. However, this method requires a large number of gratings and has a complicated structure, resulting in high cost. Another filter is based on a broadband light source and a mach-zehnder interferometer and has a very high Q value. However, in this structure, a long optical fiber is selected as a dispersion structure, and a large number of optical amplifiers are required to compensate for loss in the link, which may affect the quality of the signal.
Disclosure of Invention
The invention mainly solves the technical problems of high cost, high link loss and the like in the prior art, provides a microwave photonic filter based on a spectrum segmentation light source, can realize a band-pass microwave photonic filter with a high Q value, and realizes a band-pass filtering function on a large-range frequency signal.
The invention provides a microwave photon filter based on a spectrum segmentation light source, which comprises: the system comprises a broadband light source, an inclined fiber grating, a polarization controller, a coupler, a spectrum analyzer, an electro-optical intensity modulator, an erbium-doped fiber amplifier, a dispersion compensation fiber, a photoelectric detector and a vector network analyzer;
an optical signal output by the broadband light source;
the inclined fiber grating divides an optical signal output by the broadband light source;
the polarization controller controls the polarization state of the optical signal after the oblique fiber bragg grating is divided;
the coupler receives the optical signal controlled by the polarization controller, and a first outlet of the coupler is connected with the spectrum analyzer to observe the spectrum; the second outlet of the coupler is connected with the electro-optical intensity modulator;
the electro-optical intensity modulator receives the microwave signal provided by the vector network analyzer, modulates the microwave signal to the spectrum of the optical signal output by the second outlet of the coupler, and generates an optical carrier microwave signal;
the dispersion compensation optical fiber delays, weights and superposes the optical carrier microwave signals;
the photoelectric detector receives the optical carrier microwave signal output by the dispersion compensation optical fiber, and recovers the radio frequency signal meeting the coherent superposition condition by beat frequency to realize the filtering function;
the vector network analyzer is used to generate and observe the frequency response curve of the filter.
Preferably, the optical signal loss compensation is performed on the optical microwave-carried signal output by the dispersion compensation fiber through the erbium-doped fiber amplifier, and then the optical microwave-carried signal is input to the photodetector.
Preferably, the electro-optic intensity modulator is a mach-zehnder modulator.
Preferably, the frequency range of the microwave signal is: 2-20GHz, power-20 dBm.
Preferably, the spectral range of the broadband light source is 1535-1565 nm.
Preferably, the inclined angle of the inclined fiber grating is 8 degrees.
Preferably, the bandwidth of the electro-optical intensity modulator is 40 GHz.
Preferably, the dispersion compensation fiber has a dispersion coefficient ranging from-50 to-130 ps/nm.
Preferably, the bandwidth of the photodetector is 18 GHz.
Compared with the prior art, the microwave photon filter based on the spectrum segmentation light source has the following advantages:
(1) the invention can realize the band-pass microwave photon filter with high Q value, because the number of taps in the filter structure is very large, the Q value is very large and is approximately equal to the number of taps.
(2) The invention can realize the band-pass filtering function of the wide-range frequency signal of 4-13 GHz.
(3) The invention avoids the problem of higher cost of the traditional light source array filter.
(4) The invention has simple structure, is tunable, has simple and easy operation of the tuning method, can perform spectrum segmentation of the broadband light source by only one simple grating, and can perform tuning of passband frequency only by adjusting the total dispersion value in a link.
Drawings
FIG. 1 is a link diagram of a microwave photonic filter based on a spectrum division light source provided by the present invention;
FIG. 2 is a graph of the spectral output after being divided by a tilted fiber grating;
FIG. 3 is a graph of the frequency response of a filter for different dispersion values;
fig. 4 is a schematic diagram of testing and verifying tunability in accordance with the present invention.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the relevant aspects of the present invention are shown in the drawings.
Fig. 1 is a link diagram of a microwave photonic filter based on a spectrum division light source provided by the invention. As shown in fig. 1, a microwave photonic filter based on a spectrum-splitting light source according to an embodiment of the present invention includes: the device comprises a broadband light source, an inclined fiber grating, a polarization controller, a coupler, a spectrum analyzer, an electro-optical intensity modulator, an erbium-doped fiber amplifier, a dispersion compensation fiber, a photoelectric detector and a vector network analyzer.
The broadband light source outputs an optical signal. The optical signal output by the broadband light source is a wide-spectrum light source, and the frequency spectrum distribution of the wide-spectrum light source is as follows:
Figure BDA0002443580830000041
wherein E (omega) is the spectral distribution of the wide-spectrum light source, omega is the frequency of the light source, and P0Representing the total power of the light source, omega3dBRepresents the 3dB bandwidth, omega, of a Gaussian broadband light source0Representing the light source center frequency.
The inclined fiber grating divides the optical signal output by the broadband light source to obtain the optical signal divided by the inclined fiber grating. The inclination angle of the inclined fiber grating is 8 degrees. The spectrum of the divided broad-spectrum light source forms a comb spectrum, and the 'wavelengths' of the comb spectrum are equivalent to taps of one wavelength. The transfer function of the tilted fiber grating (TFBG) cladding mode is:
Figure BDA0002443580830000042
Figure BDA0002443580830000043
wherein, TTFBG(omega) is the transmission function of the cladding mode of the tilted fiber grating, omega represents the frequency of the light source, omega0Representing the center frequency, n, of the light sourcecladAnd LcladRespectively representing the refractive index and the length of the cladding, ncoreAnd LcoreRespectively, the refractive index and the length of the core, and Δ Ω represents the frequency interval after spectral division. The spectral density of the optical power of the optical signal after being split by the tilted fiber grating can be expressed as:
T(Ω)＝|E(Ω)|2TTEBG(Ω) (4)
the coupler receives the optical signal controlled by the polarization controller, and a first outlet of the coupler is connected with the spectrum analyzer to observe the spectrum; the second outlet of the coupler is connected to an electro-optical intensity modulator.
The electro-optical intensity modulator receives the microwave signal provided by the vector network analyzer and modulates the microwave signal onto the spectrum of the optical signal output by the second outlet of the coupler to generate an optical carrier microwave signal. The frequency range of the microwave signal is: 2-20GHz, power-20 dBm. The bandwidth of the electro-optical intensity modulator is 40 GHz. In this embodiment, the electro-optic intensity modulator is a mach-zehnder modulator (MZM). The optical signal passes through a Mach-Zehnder modulator, and the optical signal output is expanded according to a Bessel function (only first-order sidebands are considered, and high-order sidebands are ignored):
E(t)＝E0{J0(mp)cos(Ωt)+J1(mp)cos[(Ω+ω)t]+J1(mp)cos[(Ω-ω)t])} (5)
wherein Ω 2 π c/λ represents the light source frequency, mpDenotes the modulation index, mp＝πV/Vπω denotes the angular frequency of the radio frequency signal, ω 2 π f, Jn(. x) denotes the nth order constant of the bessel function of the first kind.
Representing the optical signal in the frequency domain:
E(Ω)＝cejΩt+m1ej(Ω+ω)t+m2ej(Ω-ω)t(6)
wherein c is J0(mp)、mi＝J1(mp)(i＝1,2)。
And the dispersion compensation optical fiber delays, weights and superposes the optical carrier microwave signals. The dispersion compensation fiber has a dispersion coefficient ranging from 50 to 130 ps/nm. The transmission function of the dispersion compensating fiber is H (omega) | e-jФ(Ω)χ is the dispersion slope of the fiber, and the rf-to-end response of the entire system can be written as:
Figure BDA0002443580830000051
the photoelectric detector receives the optical carrier microwave signal output by the dispersion compensation optical fiber, and recovers the radio frequency signal meeting the coherent superposition condition by beat frequency to realize the filtering function; the bandwidth of the photodetector is 18 GHz. The optical signal loss compensation is carried out on the optical microwave signal output by the dispersion compensation optical fiber through the erbium-doped optical fiber amplifier, and then the optical microwave signal is input to the photoelectric detector. The erbium-doped fiber amplifier is used for compensating optical signal loss in a link.
The vector network analyzer observes the radio frequency signals and generates a frequency response curve of the filter.
The center frequency of the filter is:
Figure BDA0002443580830000052
where β denotes the dispersion of the fiber, D denotes the total dispersion coefficient in the link, L denotes the length of the link, and Δ λFSRIn particular to the output spectral peak interval.
The invention provides a microwave photon filter based on a spectrum segmentation light source, which is characterized in that an optical signal emitted by a broadband light source is segmented into a comb-shaped spectrum by an inclined fiber grating. The individual "wavelengths" that form the comb spectrum correspond to individual optical taps. Unlike typical discrete samples, such continuous light samples tend to have infinite free spectral range. The polarization controller is then used to adjust the polarization state of the signal, which is then split into two paths via the coupler. The first outlet of the coupler is connected with a spectrum analyzer for observing the condition of the spectrum splitting light source. The second outlet of the coupler is connected with the Mach-Zehnder modulator, and the vector network analyzer outputs a section of swept microwave signal which is modulated on an optical signal through the Mach-Zehnder modulator. The optical signal modulated by microwave enters into the dispersion compensation optical fiber, and is dispersed, delayed and superposed, and then is amplified by the erbium-doped optical fiber amplifier. The erbium-doped optical fiber amplifier is connected with the photoelectric detector, the photoelectric detector converts an input optical signal into a microwave electric signal, the microwave electric signal is input into the vector network analyzer through a cable to be observed and analyzed, and the property of the filter is obtained through the frequency response curve of the filter.
The following examples are given to illustrate the invention:
fig. 2 is a schematic diagram of a spectrum divided by an inclined fiber grating, and it can be seen from the diagram that the shape of the divided spectrum is good, the FSR is stable, and the experimental requirements are met. Fig. 3 shows the frequency response curve of the filter under different dispersion values in the link, and it can be seen from the graph that the center frequency of the filter is greatly affected by the dispersion values of the link, and overall, the passband of the filter is relatively obvious and can perform a good filtering function. Fig. 4 shows the relationship between the center frequency of the filter and the link dispersion value, and it is obvious that the center frequency of the filter is proportional to the inverse of the dispersion value. In order to prove the reliability of the experiment, the relation between the central frequency and the dispersion of the filter is simulated and calculated (a dotted line in the figure), and the experimental result is well matched with the theoretical simulation.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: modifications of the technical solutions described in the embodiments or equivalent replacements of some or all technical features may be made without departing from the scope of the technical solutions of the embodiments of the present invention.

Claims (9)

1. A microwave photonic filter based on a spectrally sliced light source, comprising: the system comprises a broadband light source, an inclined fiber grating, a polarization controller, a coupler, a spectrum analyzer, an electro-optical intensity modulator, an erbium-doped fiber amplifier, a dispersion compensation fiber, a photoelectric detector and a vector network analyzer;
the broadband light source outputs optical signals;
the inclined fiber grating divides an optical signal output by the broadband light source;
the polarization controller controls the polarization state of the optical signal after the oblique fiber bragg grating is divided;
the coupler receives the optical signal controlled by the polarization controller, and a first outlet of the coupler is connected with the spectrum analyzer to observe the spectrum; the second outlet of the coupler is connected with the electro-optical intensity modulator;
the electro-optical intensity modulator is a Mach-Zehnder modulator, receives the microwave signal provided by the vector network analyzer, and modulates the microwave signal onto the spectrum of the optical signal output by the second outlet of the coupler to generate an optical carrier microwave signal;
the dispersion compensation optical fiber delays, weights and superposes the optical carrier microwave signals;
the photoelectric detector receives the optical carrier microwave signal output by the dispersion compensation optical fiber, and recovers the radio frequency signal meeting the coherent superposition condition by beat frequency to realize the filtering function;
the vector network analyzer is used to generate and observe the frequency response curve of the filter.
2. The microwave photonic filter based on the spectrum division light source of claim 1, wherein the optical signal loss compensation is performed on the optical microwave-carried signal output by the dispersion compensation fiber through the erbium-doped fiber amplifier, and then the optical microwave-carried signal is input to the photodetector.
3. The microwave photonic filter based on the spectrum division light source of claim 1 or 2, wherein the electro-optical intensity modulator employs a mach-zehnder modulator.
4. The spectral splitting light source based microwave photonic filter of claim 1, wherein the frequency range of the microwave signal is: 2-20GHz, power-20 dBm.
5. The microwave photonic filter based on spectrum split light source of claim 1, wherein the spectrum range of the broadband light source is 1535-1565 nm.
6. The spectral splitting light source-based microwave photonic filter according to claim 1, wherein the tilt angle of the tilted fiber grating is 8 degrees.
7. The spectrally sliced light source-based microwave photonic filter of claim 1, wherein the bandwidth of the electro-optic intensity modulator is 40 GHz.
8. The microwave photonic filter based on the spectrum segmentation light source of claim 1, wherein the dispersion compensation fiber has a dispersion coefficient ranging from-50 to-130 ps/nm.
9. The spectrally sliced light source-based microwave photonic filter of claim 1 wherein the bandwidth of the photodetector is 18 GHz.
CN202010272426.8A 2020-04-09 2020-04-09 Microwave photon filter based on spectrum segmentation light source Pending CN111427172A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010272426.8A CN111427172A (en) 2020-04-09 2020-04-09 Microwave photon filter based on spectrum segmentation light source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010272426.8A CN111427172A (en) 2020-04-09 2020-04-09 Microwave photon filter based on spectrum segmentation light source

Publications (1)

Publication Number Publication Date
CN111427172A true CN111427172A (en) 2020-07-17

Family

ID=71557716

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010272426.8A Pending CN111427172A (en) 2020-04-09 2020-04-09 Microwave photon filter based on spectrum segmentation light source

Country Status (1)

Country Link
CN (1) CN111427172A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113381815A (en) * 2021-04-27 2021-09-10 中国人民解放军空军预警学院 Dispersion-induced radio frequency power attenuation compensation method and system in optical fiber
CN116972890A (en) * 2023-09-22 2023-10-31 之江实验室 Optical fiber sensor and modulation method thereof

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1176546A (en) * 1996-08-30 1998-03-18 朗迅科技公司 Optical communication system employing spectrally sliced optical source
US20090262774A1 (en) * 2008-04-17 2009-10-22 Pin Long Sliced Fiber Bragg grating used as external cavity for semiconductor laser and solid state laser
CN102109635A (en) * 2011-02-14 2011-06-29 南开大学 Method for writing and manufacturing laser pulse of tilt long period and ultra-long period fiber grating
CN103235374A (en) * 2013-04-15 2013-08-07 华中科技大学 Microwave photon filter of multi-wavelength light source and tuning and reconfiguring method of microwave photon filter
CN106356700A (en) * 2016-11-15 2017-01-25 湖南工学院 Method and device for generating high-stability microwave millimeter wave source
CN107300788A (en) * 2017-06-20 2017-10-27 华中科技大学 A kind of tunable high q-factor single-pass band microwave photon filter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1176546A (en) * 1996-08-30 1998-03-18 朗迅科技公司 Optical communication system employing spectrally sliced optical source
US20090262774A1 (en) * 2008-04-17 2009-10-22 Pin Long Sliced Fiber Bragg grating used as external cavity for semiconductor laser and solid state laser
CN102109635A (en) * 2011-02-14 2011-06-29 南开大学 Method for writing and manufacturing laser pulse of tilt long period and ultra-long period fiber grating
CN103235374A (en) * 2013-04-15 2013-08-07 华中科技大学 Microwave photon filter of multi-wavelength light source and tuning and reconfiguring method of microwave photon filter
CN106356700A (en) * 2016-11-15 2017-01-25 湖南工学院 Method and device for generating high-stability microwave millimeter wave source
CN107300788A (en) * 2017-06-20 2017-10-27 华中科技大学 A kind of tunable high q-factor single-pass band microwave photon filter

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CÉSAR JÁUREGUI等: "Interrogation unit for fiber Bragg grating sensors that uses a slanted fiber grating", 《OPTICS LETTERS》 *
陈志勋等: "宽带非相干光纤光源的分割技术", 《飞通光电子技术》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113381815A (en) * 2021-04-27 2021-09-10 中国人民解放军空军预警学院 Dispersion-induced radio frequency power attenuation compensation method and system in optical fiber
CN113381815B (en) * 2021-04-27 2022-09-02 中国人民解放军空军预警学院 Dispersion-induced radio frequency power attenuation compensation method and system in optical fiber
CN116972890A (en) * 2023-09-22 2023-10-31 之江实验室 Optical fiber sensor and modulation method thereof
CN116972890B (en) * 2023-09-22 2024-01-09 之江实验室 Optical fiber sensor and modulation method thereof

Similar Documents

Publication Publication Date Title
Sancho et al. Integrable microwave filter based on a photonic crystal delay line
Tong et al. Towards ultrasensitive optical links enabled by low-noise phase-sensitive amplifiers
Mora et al. Photonic microwave tunable single-bandpass filter based on a Mach-Zehnder interferometer
CN101436905A (en) Tunable microwave photon filter based on Brillouin optical fiber laser
Li et al. Performance analysis of microwave photonic spectral filters based on optical microcombs
Wang et al. Machine learning-based multifunctional optical spectrum analysis technique
CN111427172A (en) Microwave photon filter based on spectrum segmentation light source
CN111504456B (en) Fine spectrum detection device and method
CN114731201A (en) Optical system including reconfigurable device and optical system control method
CN107947867A (en) A kind of single-side belt frequency spectrum generation device and method based on multifrequency phase modulation
Tian et al. On-chip OSNR monitoring system based on power-balanced Mach-Zehnder interferometers
EP1410100B1 (en) Fiber optical gain equalizer
CN114966197A (en) Transient microwave frequency measuring device and method based on stimulated Brillouin scattering effect
CN114337836A (en) MZM-based optical frequency comb generation system and application thereof in WDM
Mathew et al. Mdm transmission using air-clad photonic lanterns
Nureev et al. Microwave photonic polyharmonic processes for fiber-optical structures of telecommunication systems probing
Moss Design and Performance Analysis of Microwave Photonic Spectral Domain Filters Using Optical Microcombs
Deng et al. High wavelength-resolved state of polarization monitoring method based on stimulated Brillouin scattering effect
Kittlaus et al. Integrated RF-photonic filters via photonic-phononic emit-receive operations
Zhao et al. A multi-passband microwave photon filter based on multiple dispersion devices
Zhou et al. A High-Speed High-Sensitivity Multi-Beam-Interferometer-Assistant SOA-PIN Photodetector with High Wavelength Drift Tolerance
Moss Designing and analyzing microwave photonic spectral domain filters based on transversal filtering with optical microcombs
Moss Maximizing the performance of microwave photonic signal processors based on Kerr microcombs
Moss Modeling Microwave Spectral Domain Filters Based on Optical Microcombs
Moss Minimizing experimental errors for microwave photonic transversal filter signal processors based on integrated optical microcombs

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
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20200717