CN109450540A - A kind of tunable dual-passband microwave photon filter realization device and method - Google Patents
A kind of tunable dual-passband microwave photon filter realization device and method Download PDFInfo
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Abstract
The invention belongs to field of photoelectric technology, and in particular to a kind of tunable dual-passband microwave photon filter realization device and method based on stimulated Brillouin scattering.The present invention is using a laser as light source, signal light and pump light are generated using photo-coupler branch, signal light branch loads microwave signal to be filtered by electric light phase-modulation, and pump light branch generates tunable dual wavelength pump light using the Brillouin scattering effect in single mode optical fiber and the carrier-suppressed double sideband modulation in double parallel Mach increasing Dare modulator；Realize that respective frequencies component phase in signal light is modulated to the conversion of intensity modulated using absorption spectra of the dual wavelength pump light in highly nonlinear optical fiber, to realize narrow linewidth, high out-of-side rejection than the dual-passband microwave photon filter with high stable, wherein, continuous tuning in the same direction is realized by changing the radio frequency signal frequency being loaded on double parallel Mach increasing Dare modulator in the centre frequency position of two passbands, in addition, passband interval can have the optical fiber of different Brillouin shift amounts to be changed by changing.
Description
Technical field
The invention belongs to field of photoelectric technology, and in particular to a kind of tunable dual-passband microwave photon filter realization device
And method.
Background technique
Microwave filter is usually realized in electrical domain by single or multiple coupled resonators, for selecting the micro- of required frequency range
Wave signal and the microwave signal for inhibiting remaining frequency range are essential devices in radio frequency system and link.The filter of electrical domain microwave
The major defect of wave device is that tuning performance is poor, is unable to satisfy certain radio frequency system application demands for requiring wide-band to tune.Microwave
Electric signal is modulated on light wave by photon filter, is handled in area of light signal, and then reconvert telegram in reply domain is filtered
Electric signal after wave effectively overcomes the problem of electrical domain microwave filter tuning performance difference, and there is wide-band to work, is restructural
And the advantages that electromagnetism interference, it is one of the strong alternative solution for solving electrical domain art of microwave filters bottleneck.In recent years, with
The fast development of radio-frequency technique, the demand worked at the same time to radio frequency system two-band is more more and more urgent, this is just needed as pass
There are two passbands (for example, double frequency router needs double-passband filter to select for the microwave filter tool of one of key device
Two groups of Wi-Fi signals of 2.4GHz and 5GHz).Relative to electrical domain microwave filter, microwave photon filter is tunable in realization
Equally there is significant advantage in terms of dual-passband, be one of the hot technology paid close attention in recent years.
Stimulated Brillouin scattering effect is widely used in realizing microwave light due to characteristics such as its narrowband, low pumping thresholds
Subfilter has the series of advantages such as tunable wide-band, high out-of-side rejection ratio and narrow passband, it is considered to be most have at present
One of potentiality and the microwave photon filter technical solution of prospect.In addition, by the rational design to system structure, based on being excited
Dual-passband filtering may be implemented in the microwave photon filter of Brillouin scattering.2016, J.Q.Li et al. proposed a kind of based on two
Dual-passband microwave photon filter (J.Q.Li, Y.C.Xiao, W.Dong, the et al.Dual-band of a independent pump laser
bandpass tunable microwave photonic filter based on stimulated Brillouin
Scattering.Optoelectronics Letters, 2016,12 (4): 276-279), realize freely adjusting for dual-passband
It is humorous, but its passband central frequency depends on the difference on the frequency between laser, therefore the serious shadow of frequency drift problem of laser
The stability of entire filtering system is rung, while the program realizes that phase-modulation turns to intensity modulated using brillouin gain spectrum
It changes, therefore inevitably introduces Brillouin's spontaneous emission noise, deteriorate the signal-to-noise ratio of system.2017, S.L.Hu etc.
People generates double pumping action light using the method for single laser combination Electro-optical Modulation, realizes tunable dual-passband microwave photon filter
Wave device (Hu S, Li L, Yi X, et al.Tunable Dual-Passband Microwave Photonic Filter
Based on Stimulated Brillouin Scattering.IEEE Photonics Technology Letters,
2017,29 (3): 330-333), although influence of the laser frequency drifting problem to filtering system stability is resolved,
It is that two filter pass bands can only be symmetrical centered on Brillouin shift amount (about 10GHz), seriously limits filtering system tune
Humorous flexibility, in addition, the program equally uses brillouin gain spectrum to realize conversion of the phase-modulation to intensity modulated, Brillouin
Spontaneous emission noise still remains the signal-to-noise ratio deterioration of system.
Summary of the invention
The present invention is in view of the above-mentioned problems, propose a kind of tunable dual-passband microwave photon filter realization device and method.
Technical solution of the present invention: a kind of tunable dual-passband microwave photon filter realization device and method are specific to tie
Structure is as shown in Figure 1, working principle is as shown in Figure 2, comprising the following steps:
1) laser output frequency is fcNarrow linewidth light wave, by photo-coupler be divided into up and down two-way, upper branch be known as believe
Number light, lower branch are known as pump light；
2) signal light of branch enters phase-modulator on, is modulated by the radiofrequency signal inputted, forms phase-modulation
Optical signal, from left to right forward direction enters in highly nonlinear optical fiber and transmits；
3) pump light of branch is after erbium-doped fiber amplifier 1 realizes power amplification under, into 1 mouthful of optical circulator 1,
And exported by 2 mouthfuls, enter in single mode optical fiber transmit from top to bottom, due to Brillouin scattering effect, generates frequency and move down υB1After
To Stokes ratio (frequency fc-υB1), it is exported into 2 mouthfuls of optical circulator 1, and by 3 mouthfuls, subsequently enters double parallel horse
Conspicuous Zeng Deer modulator is f by the frequency that adjustable microwave source exportsmRadiofrequency signal be modulated, form the double of suppressed carrier
Sideband modulation optical signal, as dual wavelength pump light, (frequency is respectively fp1And fp2), function is realized by erbium-doped fiber amplifier 2
After rate amplification, is exported into 1 mouthful of optical circulator 2, and by 2 mouthfuls, be redirected back into highly nonlinear optical fiber transmit from right to left；
4) signal light and the pump light counter-propagate in highly nonlinear optical fiber, due to stimulated Brillouin scattering effect, double wave
Long pump light forms two absorption peaks in the sideband of phase modulated optical signal, causes corresponding with the two absorption peaks in sideband
Two frequency contents are attenuated, and other two corresponding modulation sideband, retains, so that this two groups of frequency content institutes
Corresponding signal light completes phase-modulation, and to the conversion of intensity modulated, (centre frequency is respectively fp11And fp21), and remaining frequency
Signal light corresponding to ingredient still maintains phase-modulation state；
5) signal light by stimulated Brillouin scattering effect enters 2 mouthfuls of optical circulator 2, and enters light by 3 mouthfuls of outputs
Electric explorer completes phase-modulation to two groups of frequency contents that intensity modulated is converted and recovers corresponding frequencies by photoelectric conversion
Radiofrequency signal, remaining keep phase-modulation state frequency content can not pass through the radio frequency of respective frequencies at photoelectric conversion recovery
Signal, to realize dual-passband filtering；
6) difference of the centre frequency of two passbands by the Brillouin shift amount in single mode optical fiber and highly nonlinear optical fiber difference |
υB2-υB1| it determines, can change frequency interval between two passbands by using the optical fiber with different Brillouin shift amounts instead,
And the radio frequency signal frequency f by changing the output of adjustable microwave sourcemConnecting in the same direction for two passband central frequency positions may be implemented
Continuous tuning.
The invention has the benefit that (1) constructed using the difference of the Brillouin shift between two kinds of different optical fiber it is adjustable
Humorous double-passband filter, it can be achieved that two passbands continuous tuning in the same direction, and there are different Brillouin shift amounts by changing
Optical fiber can change the frequency interval between two passbands；(2) system is logical only with a laser, the tuning of two passbands
The radio frequency signal frequency realization for changing the output of adjustable microwave source is crossed, filtering system has good stability；(3) system utilizes
Brillouin's absorption spectra realizes that phase-modulation to the conversion of intensity modulated, efficiently solves Brillouin's spontaneous emission noise to system
The deterioration problem of signal-to-noise ratio.
Detailed description of the invention
Fig. 1 is the tunable double-passband filter apparatus structure schematic diagram based on stimulated Brillouin scattering.
Fig. 2 is the tunable double-passband filter operation principle schematic diagram based on stimulated Brillouin scattering.
Fig. 3 is Brillouin shift test result in highly nonlinear optical fiber.
Fig. 4 is Brillouin shift test result in single mode optical fiber.
Fig. 5 is laser output light spectrum.
Fig. 6 is the output spectrum of backward Brillouin scattering stokes light in single mode optical fiber.
Fig. 7 is the output spectrum of double parallel MZ Mach-Zehnder carrier-suppressed double sideband modulation.
Fig. 8 is the tunable dual-passband microwave photon filter frequency response test result based on stimulated Brillouin scattering.
Specific embodiment
The present invention is described in detail with example with reference to the accompanying drawing:
As shown in Figure 1, laser output frequency is fcNarrow linewidth light wave, by photo-coupler be divided into up and down two branches.On
Branch is known as signal light, and lower branch is known as pump light.The signal light of upper branch enters phase-modulator, by the radiofrequency signal inputted
It is modulated, forms phase modulated optical signal.In the case where small signal modulation is approximate, light wave is equal by phase-modulator generation amplitude
But the single order sideband up and down of opposite in phase, from left to right forward direction enters in highly nonlinear optical fiber and transmits.The output of phase-modulator
Light field can be expressed as
Wherein m is the index of modulation of phase-modulator, J0(x) and J1(x) be respectively zero and first order first kind Bezier
Function.If phase modulated optical signal is directly entered photodetector and is detected, upper and lower single order sideband respectively with carrier wave beat frequency
Obtained signal phase difference can not recover radiofrequency signal to repeal by implication for 180 degree.
The pump light of lower branch is after erbium-doped fiber amplifier 1 realizes power amplification, into 1 mouthful of optical circulator 1, and
It is exported by 2 mouthfuls, enters in single mode optical fiber transmit from top to bottom, due to Brillouin scattering effect, generation frequency shift amount is υB1Frequency
Backward Stokes ratio (the frequency f moved downc-υB1), it exports, subsequently enters into 2 mouthfuls of optical circulator 1, and by 3 mouthfuls
Double parallel MZ Mach-Zehnder is modulated by the radiofrequency signal that adjustable microwave source exports, and microwave source modulation rate is fm,
Suppressed-carrier double side band modulated optical signal is formed, frequency is respectively fP1=fc-υB1-fmAnd fP2=fc-υB1+fm, as double wave
Long pump light after realizing power amplification by erbium-doped fiber amplifier 2, is exported into 1 mouthful of optical circulator 2, and by 2 mouthfuls, from
The right side is redirected back into highly nonlinear optical fiber to a left side and transmits.Signal light and the pump light counter-propagate in highly nonlinear optical fiber, due to
Stimulated Brillouin scattering effect, dual wavelength pump light form two absorption peaks in phase modulated optical signal sideband, lead to sideband
In two frequency contents corresponding with the two absorption peaks be attenuated.Under Single wavelength pumping, brillouin gain spectrum and loss spectra
It can be expressed as
Wherein υ is relative to the amounts of frequency offset at Brillouin shift, g0And ΓBRespectively Brillouin's peak gain coefficient and 3dB
Brillouin linewidth.As shown in Figure 2, frequency is located at f in phase modulated optical signalP11=fc-υB1-fm+υB2And fP21=fc-υB1+fm+
υB2Due to the effect of dual wavelength pump light Brillouin scattering loss spectra, power is attenuated two groups of neighbouring sidebands, output light field
It can be expressed as
Wherein, L is optical fiber effective length, IPFor pumping light power, f1=υB2-υB1-fm- f and f2=υB2-υB1+fm- f points
Not Wei phase modulated signal frequency f relative to dual wavelength pump light fP1And fP2Brillouin's loss spectra centre frequency fP11And fP21
The frequency deviation at place.And other two corresponding modulation sideband, retains, so that signal corresponding to this two groups of frequency contents
Light completes the conversion of phase-modulation to intensity modulated, and signal light corresponding to remaining frequency content still maintains phase-modulation
State.Enter 2 mouthfuls of optical circulator 2 by the signal light that stimulated Brillouin scattering acts on, and enters photodetection by 3 mouthfuls of outputs
Device completes the radio frequency that two groups of frequency contents that phase-modulation is converted to intensity modulated recover corresponding frequencies by photoelectric conversion
Signal, remaining keep phase-modulation state frequency content can not by the radiofrequency signal of respective frequencies at photoelectric conversion recovery,
To realize dual-passband filtering.The output electric current of photodetector can be expressed as
I (t)=J0(m)J1(m)[A(f1)-A(f2)]cos[2πft-φ(f1)-φ(f2)] (5)
Wherein
Therefore the power versus frequency response of microwave photon filter can be expressed as
|H(f)|2∝|A(f1)-A(f2)|2 (10)
In the present invention, the centre frequency of two passbands of filter is by the brillouin frequency in single mode optical fiber and highly nonlinear optical fiber
The difference of shifting amount | υB2-υB1| and the radio frequency signal frequency f of adjustable microwave source outputmIt codetermines, respectively fm±|υB2-υB1|。
By the radio frequency signal frequency f for changing the output of adjustable microwave sourcem, the in the same direction continuous of two passband central frequency positions may be implemented
Tuning, and can change frequency interval 2 between two passbands by using the optical fiber with different Brillouin shift amounts instead | υB2-
υB1|。
Embodiment
Below with reference to Fig. 1-Fig. 8, the present invention is further illustrated by taking experimental result as an example.
The present embodiment builds the tunable bilateral based on stimulated Brillouin scattering according to structure shown in Fig. 1 and Fig. 2 and principle
Band microwave photon filter, single mode optical fiber and highly nonlinear optical fiber length used is respectively 25.2km and 1km.Utilize single-side belt tune
Method processed and vector network analyzer test to obtain Brillouin shift amount in single mode optical fiber and highly nonlinear optical fiber
10.862GHz and 9.644GHz, test result are as shown in Figure 3 and Figure 4.In addition, the present embodiment uses distributed feed-back (DFB) laser
Device gives the output spectrum that test obtains as narrow linewidth light source, central wavelength 1549.901nm, Fig. 5.Laser output
Narrow linewidth light wave two-way up and down is divided by photo-coupler, upper branch is known as signal light, and lower branch is known as pump light.Upper branch
Signal light enters phase-modulator, is modulated by the swept-frequency signal that vector network analyzer exports, and forms phase modulated light letter
Number, from left to right the positive length that enters is transmits in the highly nonlinear optical fiber of 1km, signal light power 2.5dBm.Lower branch
Pump light by erbium-doped fiber amplifier 1 realize power amplification after, into 1 mouthful of optical circulator 1, and by 2 mouthfuls export, on to
It is lower into transmitting in the single mode optical fiber that length is 25.2km, due to Brillouin scattering effect, generations frequency shift amount is υB1Frequency under
The backward Stokes ratio moved, spectrum are as shown in Figure 6.Backward Stokes ratio enters 2 mouthfuls of optical circulator 1,
And exported by 3 mouthfuls, double parallel MZ Mach-Zehnder is subsequently entered, is adjusted by the radiofrequency signal that adjustable microwave source exports
System forms suppressed-carrier double side band modulated optical signal, and frequency is respectively fP1And fP2, as dual wavelength pump light, spectrum is such as
Shown in Fig. 7.After dual wavelength pump light realizes power amplification by erbium-doped fiber amplifier 2, into 1 mouthful of optical circulator 2, and by
2 mouthfuls of outputs, are redirected back into highly nonlinear optical fiber transmit from right to left, pumping light power 5.7dBm.Signal light and pump light
The counter-propagate in highly nonlinear optical fiber, due to stimulated Brillouin scattering effect, dual wavelength pump light is in phase modulated optical signal
Sideband in formed two absorption peaks, cause two frequency contents corresponding with the two absorption peaks in sideband to be attenuated, and with
Other two corresponding modulation sideband, retain so that signal light corresponding to this two groups of frequency contents completes phase tune
The conversion of intensity modulated is made, and signal light corresponding to remaining frequency content still maintains phase-modulation state.By being excited
The signal light of Brillouin scattering effect enters 2 mouthfuls of optical circulator 2, and enters photodetector by 3 mouthfuls of outputs, completes phase
Two groups of frequency contents for being modulated to intensity modulated conversion recover the radiofrequency signal of corresponding frequencies by photoelectric conversion, remaining holding
The frequency content of phase-modulation state can not be by the radiofrequency signal of respective frequencies at photoelectric conversion recovery, to realize bilateral
Band filtering.Vector network analyzer, the dual-passband obtained in vector network analyzer are sent into the output of last photodetector
Frequency response is as shown in Figure 8.
The difference of Brillouin shift amount in the present embodiment in single mode optical fiber and highly nonlinear optical fiber used is 1.218GHz, because
The centre frequency of this two passbands is respectively fm± 1.218GHz, the frequency interval of two passbands are 2.436GHz, tunable model
It encloses for 0-9GHz.6 when being respectively 3GHz, 4GHz, 5GHz, 6GHz, 7GHz, 8GHz to adjustable microwave source output frequency in experiment
Group data be tested, obtained bilateral mid-band frequency be respectively 1.788GHz and 4.216GHz, 2.787GHz and
5.215GHz, 3.787GHz and 6.214GHz, 4.783GHz and 7.212GHz, 5.782GHz and 8.215GHz, 6.786GHz and
9.214GHz, bandwidth are respectively 50.3MHz, 51.9MHz, 51.9MHz, 55.3MHz, 54.6MHz, 56.1MHz, Out-of-band rejection
Than more than 20dB.It can be seen that, by changing the radio frequency signal frequency of adjustable microwave source output, two are realized from experimental result
The continuous tuning in the same direction of passband central frequency position.
By specific example it is found that the invention proposes a kind of tunable dual-passband microwave photon filter device and method,
It can be realized the dual-passband filtering of stabilization, narrowband, high out-of-side rejection ratio, and two passband central frequency positions can be continuous in the same direction
Tuning can also change frequency interval between two passbands by using the optical fiber with different Brillouin shift amounts instead.
It is further to note that the present invention is not limited to the specific details in the above embodiment, in original of the invention
A variety of simplification, modification within the scope of reason method belong to protection content of the invention.
Claims (4)
1. a kind of tunable dual-passband microwave photon filter device, which is characterized in that the tunable dual-passband microwave photon
Filter apparatus includes narrow linewidth laser, photo-coupler, electro-optic phase modulator, highly nonlinear optical fiber, optical circulator 1, light
Circulator 2, erbium-doped fiber amplifier 1, erbium-doped fiber amplifier 2, adjustable microwave source, double parallel MZ Mach-Zehnder, list
Mode fiber, photodetector.
2. a kind of tunable dual-passband microwave photon filter device according to claim 1, which is characterized in that described narrow
The output of line width laser is divided into two-way after passing through photo-coupler, passes through electro-optic phase modulator all the way, by input radio frequency signal
Carry out phase-modulation, the output light of electro-optic phase modulator from left to right it is positive enter in highly nonlinear optical fiber transmit；Another way
Enter 1 mouthful of optical circulator 1 after into erbium-doped fiber amplifier 1, and exported by 2 mouthfuls, enters in single mode optical fiber pass from top to bottom
Defeated, the reversed Brillouin scattering of single mode optical fiber enters 2 mouthfuls of optical circulator 1, and is exported by 3 mouthfuls, subsequently enters double parallel horse
Conspicuous Zeng Deer modulator, double parallel MZ Mach-Zehnder are driven by adjustable microwave source and realize suppressed-carrier double side band tune
System, the dual wavelength pump light of generation after erbium-doped fiber amplifier 2 into 1 mouthful of optical circulator 2, and by 2 mouthfuls by exporting from the right side
It is redirected back into highly nonlinear optical fiber and transmits to a left side；The positive output of highly nonlinear optical fiber from left to right enters the 2 of optical circulator 2
Mouthful, and exported by 3 mouthfuls, radiofrequency signal is restored into photodetector and is exported by RF signal output.
3. a kind of implementation method of tunable dual-passband microwave photon filter device, which comprises the following steps:
1) laser output center frequency is fcNarrow linewidth light wave, two-way up and down is divided by photo-coupler, upper branch is known as signal
Light, lower branch are known as pump light；
2) signal light of branch enters phase-modulator on, is modulated by input radio frequency signal, forms phase modulated optical signal,
The frequency spectrum of the modulated optical signal is about fcSymmetrically, the amplitude of upper and lower single order modulation sideband, is identical and opposite in phase, optical signal from
Left-to-right forward direction, which enters in highly nonlinear optical fiber, to be transmitted；
3) pump light of branch is after erbium-doped fiber amplifier 1 realizes power amplification under, into 1 mouthful of optical circulator 1, and by
2 mouthfuls of outputs, enter in single mode optical fiber transmit from top to bottom, and due to Brillouin scattering effect, generation frequency shift amount is υB1Frequency under
The backward Stokes ratio moved, frequency fc-υB1, export, subsequently enter double into 2 mouthfuls of optical circulator 1, and by 3 mouthfuls
Parallel MZ Mach-Zehnder is realized suppressed-carrier double side band modulation by the radiofrequency signal that adjustable microwave source exports, is formed
Dual wavelength pump light, frequency are respectively fP1=fc-υB1-fmAnd fP2=fc-υB1+fm, power is realized by erbium-doped fiber amplifier 2
After amplification, is exported into 1 mouthful of optical circulator 2, and by 2 mouthfuls, be redirected back into highly nonlinear optical fiber transmit from right to left, it is described
fmThe radio frequency signal frequency generated for adjustable microwave source；
4) signal light and the pump light counter-propagate in highly nonlinear optical fiber, due to stimulated Brillouin scattering effect, dual wavelength pump
Pu light forms two absorption peaks in phase modulated optical signal sideband, and the center of absorption peak is located at fP11=fc-υB1-fm+υB2
And fP21=fc-υB1+fm+υB2, the υB2For Brillouin shift amount, lead to two frequencies corresponding with the two absorption peaks in sideband
Rate ingredient is attenuated, and other two corresponding modulation sideband, retains, so that corresponding to this two groups of frequency contents
Signal light completes the conversion of phase-modulation to intensity modulated, and signal light corresponding to remaining frequency content still maintains phase
Modulation condition；
5) signal light by stimulated Brillouin scattering effect enters 2 mouthfuls of optical circulator 2, and enters photoelectricity by 3 mouthfuls of outputs and visit
Device is surveyed, phase-modulation is completed to two groups of frequency contents that intensity modulated is converted and penetrating for corresponding frequencies is recovered by photoelectric conversion
Frequency signal, remaining keeps the frequency content of phase-modulation state that can not believe by the radio frequency of respective frequencies at photoelectric conversion recovery
Number, to realize dual-passband filtering, the centre frequency of two passbands is respectively fm±|υB2-υB1|, between the frequency of two passbands
It is divided into 2 | υB2-υB1|；
6) the radio frequency signal frequency f generated by changing adjustable microwave sourcem, the same of two passband central frequency positions may be implemented
To continuous tuning, frequency interval between two passbands can change by using the optical fiber with different Brillouin shift amounts instead.
4. a kind of implementation method of tunable dual-passband microwave photon filter device as claimed in claim 3, feature exist
In the tunable dual-passband microwave photon filter device is that the tunable dual-passband as described in one of claim 1-2 is micro-
Glistening light of waves subfilter device.
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110518983A (en) * | 2019-09-10 | 2019-11-29 | 中国科学院半导体研究所 | Reconfigurable filter based on dual-polarization double parallel MZ Mach-Zehnder |
| CN111092659A (en) * | 2019-11-29 | 2020-05-01 | 电子科技大学 | Double-chirp signal generation system based on stimulated Brillouin scattering |
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| CN111752064A (en) * | 2019-03-26 | 2020-10-09 | 中国科学院半导体研究所 | Phase-adjustable imaginary part down-conversion suppression device and method |
| CN112865876A (en) * | 2020-12-31 | 2021-05-28 | 武汉邮电科学研究院有限公司 | Microwave photon filter and bandwidth tuning method |
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| CN116742465A (en) * | 2023-08-14 | 2023-09-12 | 中国科学院长春光学精密机械与物理研究所 | Method and chip for generating linear frequency modulation laser |
| WO2024098766A1 (en) * | 2022-11-10 | 2024-05-16 | 西南交通大学 | Same-frequency common optical fiber communication and sensing integrated system |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676399A (en) * | 2013-12-17 | 2014-03-26 | 吉林大学 | High-bandwidth microwave photon filter based on stimulated Brillouin scattering effect and binary system phase shift keying technology |
| CN103715480A (en) * | 2014-01-20 | 2014-04-09 | 吉林大学 | Single-band-pass tunable microwave photonic filter with ultrahigh quality factor |
| CN103986529A (en) * | 2014-06-04 | 2014-08-13 | 吉林大学 | High bandwidth tunable double-passband microwave photon filter |
| CN105607302A (en) * | 2016-03-21 | 2016-05-25 | 中国科学院半导体研究所 | Tunable single-passband microwave photonic filter based on Brillouin optical carrier recovery |
| CN106654472A (en) * | 2016-12-28 | 2017-05-10 | 西南交通大学 | Tunable ultra narrow band microwave photonic band-pass filter |
| CN106773142A (en) * | 2016-08-29 | 2017-05-31 | 吉林大学 | A kind of tunable microwave photon notch filter for ultra-broadband signal |
| US20170331550A1 (en) * | 2016-05-11 | 2017-11-16 | Coriant Advanced Technology, LLC | Photonic-chip-based optical spectrum analyzer |
| US20180054175A1 (en) * | 2016-08-18 | 2018-02-22 | University Of Georgia Research Foundation, Inc. | Continuously tunable and highly reconfigurable multiband rf filter |
-
2019
- 2019-01-17 CN CN201811223220.5A patent/CN109450540B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676399A (en) * | 2013-12-17 | 2014-03-26 | 吉林大学 | High-bandwidth microwave photon filter based on stimulated Brillouin scattering effect and binary system phase shift keying technology |
| CN103715480A (en) * | 2014-01-20 | 2014-04-09 | 吉林大学 | Single-band-pass tunable microwave photonic filter with ultrahigh quality factor |
| CN103986529A (en) * | 2014-06-04 | 2014-08-13 | 吉林大学 | High bandwidth tunable double-passband microwave photon filter |
| CN105607302A (en) * | 2016-03-21 | 2016-05-25 | 中国科学院半导体研究所 | Tunable single-passband microwave photonic filter based on Brillouin optical carrier recovery |
| US20170331550A1 (en) * | 2016-05-11 | 2017-11-16 | Coriant Advanced Technology, LLC | Photonic-chip-based optical spectrum analyzer |
| US20180054175A1 (en) * | 2016-08-18 | 2018-02-22 | University Of Georgia Research Foundation, Inc. | Continuously tunable and highly reconfigurable multiband rf filter |
| CN106773142A (en) * | 2016-08-29 | 2017-05-31 | 吉林大学 | A kind of tunable microwave photon notch filter for ultra-broadband signal |
| CN106654472A (en) * | 2016-12-28 | 2017-05-10 | 西南交通大学 | Tunable ultra narrow band microwave photonic band-pass filter |
Non-Patent Citations (3)
| Title |
|---|
| BLAIR MORRISON等: "Tunablemicrowavephotonicnotch filterusingon-chipstimulated Brillouin scattering", 《OPTICS COMMUNICATIONS》 * |
| YOU MIN CHANG, JU HAN LEE: "High-Q, tunable, photonic microwave single passband filter based on stimulated Brillouin scattering and fiber Bragg grating filtering", 《OPTICS COMMUNICATIONS》 * |
| 刘启能: "可调谐双通道光子晶体滤波器的设计", 《半导体光电》 * |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111752064A (en) * | 2019-03-26 | 2020-10-09 | 中国科学院半导体研究所 | Phase-adjustable imaginary part down-conversion suppression device and method |
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| CN111721338B (en) * | 2020-06-08 | 2022-05-10 | 太原理工大学 | Brillouin optical time domain analysis system for alternately modulating high frequency and low frequency of pump light |
| CN111721338A (en) * | 2020-06-08 | 2020-09-29 | 太原理工大学 | Brillouin optical time domain analysis system for alternately modulating high frequency and low frequency of pump light |
| CN112865876B (en) * | 2020-12-31 | 2021-11-02 | 武汉邮电科学研究院有限公司 | Microwave photon filter and bandwidth tuning method |
| CN112865876A (en) * | 2020-12-31 | 2021-05-28 | 武汉邮电科学研究院有限公司 | Microwave photon filter and bandwidth tuning method |
| CN113078545A (en) * | 2021-03-30 | 2021-07-06 | 电子科技大学 | Tunable dual-frequency photoelectric oscillator device based on stimulated Brillouin scattering |
| CN113933586A (en) * | 2021-09-29 | 2022-01-14 | 重庆邮电大学 | Frequency response testing device and method for photoelectric detector |
| CN113933586B (en) * | 2021-09-29 | 2024-05-17 | 重庆邮电大学 | Frequency response testing device and method for photoelectric detector |
| CN114039671A (en) * | 2021-11-09 | 2022-02-11 | 上海交通大学 | Method and system for improving rejection ratio and bandwidth of narrow-band Brillouin filter through phase modulation |
| CN114389698A (en) * | 2021-12-24 | 2022-04-22 | 中国电信股份有限公司 | Microwave signal generating device and method |
| CN114389698B (en) * | 2021-12-24 | 2024-05-14 | 中国电信股份有限公司 | Microwave signal generating device and method |
| CN114285490A (en) * | 2021-12-27 | 2022-04-05 | 中国电子科技集团公司第十三研究所 | Phase noise optimization device and optimization method |
| CN115296735A (en) * | 2022-08-05 | 2022-11-04 | 中国电信股份有限公司 | Measuring device and method for microwave signal, storage medium and electronic equipment |
| WO2024098766A1 (en) * | 2022-11-10 | 2024-05-16 | 西南交通大学 | Same-frequency common optical fiber communication and sensing integrated system |
| CN116742465A (en) * | 2023-08-14 | 2023-09-12 | 中国科学院长春光学精密机械与物理研究所 | Method and chip for generating linear frequency modulation laser |
| CN116742465B (en) * | 2023-08-14 | 2023-11-14 | 中国科学院长春光学精密机械与物理研究所 | Method and chip for generating linear frequency modulation laser |
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