CN106961252B - A kind of microwave photon mirror image inhibition down conversion method based on DPMZM modulator - Google Patents
A kind of microwave photon mirror image inhibition down conversion method based on DPMZM modulator Download PDFInfo
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- CN106961252B CN106961252B CN201710126336.6A CN201710126336A CN106961252B CN 106961252 B CN106961252 B CN 106961252B CN 201710126336 A CN201710126336 A CN 201710126336A CN 106961252 B CN106961252 B CN 106961252B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/16—Circuits
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The invention discloses a kind of, and the microwave photon mirror image based on DPMZM modulator inhibits down conversion method, and this method is related to microwave technical field and technical field of photo communication.The method is as shown in the picture, including laser diode LD, double parallel horse once modulator DPMZM, wavelength division multiplexer WDM, photoelectric detector PD and orthocoupler Hybrid.This method is set as 45 degree using DPMZM modulated RF RF and local oscillator LO signal, MAIN MUX offset angle, is separated upper and lower optical sideband by WDM, the intermediate-frequency IF signal for the image frequency component that is inhibited after photodetection, Hybrid coupling.The configuration of the present invention is simple, working band is wide, and image rejection ratio is high.
Description
Technical field
The present invention relates to microwave technical fields and technical field of photo communication, relate generally to microwave photon mirror image and inhibit down coversion
Technology.
Background technique
The electronic systems such as broadband wireless communications, radar, electronic warfare just develop towards big bandwidth, wide-band direction.Microwave light
Sub- technology handles microwave signal by photonics means, has big instant bandwidth, wide working band, electromagnetism interference etc. a series of
Advantage has huge applications potentiality in future electronic systems.
In radio-frequency transmitter, image frequency component interferes desired signal after down coversion, it is therefore necessary into
Row inhibits.Traditional image rejection techniques include inhibiting low-converter using image-reject filter or mirror image, and the latter one are kept away
The use of high q-factor filter is exempted from, structure is simple, is easily integrated.But traditional microwave mirror inhibits low-converter one side band
Width is limited, electromagnetic interference is serious, and on the other hand due to width phase mismatch problems, image rejection ratio is not high.
The advantages such as small are relied on using the big bandwidth of microwave photon technology, frequency, construction microwave photon mirror image inhibits down coversion system
System, it is contemplated that improve the width degree of balancing each other in broadband, improve image rejection ratio.Under thering is a small amount of microwave photon mirror image to inhibit at present
Variable-frequency solutions report, but mostly due to using the frequency dependences devices such as micro-wave coupler, electric phase shifter, Dispersive Devices,
Working frequency range, image rejection ratio are still limited.
Summary of the invention
In the presence of solving the problems, such as background technique, the present invention proposes a kind of microwave light based on DPMZM modulator
Sub- mirror image inhibits down conversion method.This method optically constructs double down coversion channels, can by modulator bias point
The phase in two channels is set as orthogonal, to realize quadrature frequency conversion, in conjunction with orthocoupler (Hybrid), mirror can be realized
As inhibiting down coversion.The Hybrid for handling intermediate-freuqncy signal is gone out, which is realized by all-optical methods, therefore has ultra-wide
Working frequency.Binary channels down coversion is realized by way of common modulation device, and the phase difference in channel can be continuous by bias
Tuning, therefore image rejection ratio is high.
The technical scheme adopted by the invention is that: described device includes laser diode (LD), DPMZM, wavelength division multiplexer
(WDM), two photodetectors (PD).The optical signal input of the delivery outlet connection DPMZM of LD；DPMZM light signal output end
Connect the public input terminal of WDM；Two output ends of WDM are separately connected two PD, PD output electric signals and are coupled by Hybrid,
Mono- output end output of Hybrid inhibits intermediate frequency (IF) signal of image frequency component.
The DPMZM by a Y type beam splitter, up and down in parallel two horses once modulator (being denoted as X-MZM, Y-MZM),
One Y type optical combiner composition.X-MZM, Y-MZM and MAIN MUX have a bias voltage port respectively.
The present invention at work the following steps are included:
(1) it is injected into DPMZM from the continuous light carrier that LD is exported；
(2) prevention at radio-frequency port of radio frequency (RF) signal connection X-MZM, local oscillator (LO) signal connect the prevention at radio-frequency port of Y-MZM；
(3) X-MZM and Y-MZM is biased in smallest point, and the offset angle of MAIN MUX is 45 degree；
(4) optical signal of modulator output enters WDM, and WDM constructs the bandpass filter of two adjacent pass-bands, output RF and
The upper side band and lower sideband that LO is modulated；
(5) two ways of optical signals respectively enters PD, and photodetection exports I/Q two-way IF signal；
(6) two-way IF signal is coupled by Hybrid, and output inhibits the IF signal of image frequency component.
The invention proposes a microwave photon mirror images to inhibit down-conversion device and method, which is realized using DPMZM
The Electro-optical Modulation of RF and LO signal, WDM separate optical sideband up and down and are obtained after photodetection by adjusting the main offset angle of DPMZM
Orthogonal IF signal realizes that image frequency component inhibits after coupling by Hybrid.The configuration of the present invention is simple, have it is very strong can
Operability.
X-MZM and Y-MZM works in smallest point in the present invention, to improve the purity of frequency spectrum of IF signal.
The conversion gain in two channels can be by optical attenuator flexible modulation in the present invention, and the phase difference in two channels can be with
It is continuously adjusted by the main offset angle of modulator, therefore the degree of balance of two-way amplitude and phase can be improved, improve image rejection ratio.
Detailed description of the invention
Fig. 1 is that the present invention is based on the schematic diagrams that the microwave photon mirror image of DPMZM modulator inhibits down conversion method；
Fig. 2 (a) is the frequency spectrum of two passband responses of WDM and the optical signal into WDM in embodiment；
Fig. 2 (b) is the two ways of optical signals frequency spectrum of WDM output in embodiment；
Fig. 3 (a) is the experimental results that image rejection ratio changes with LO frequency in embodiment；
Fig. 3 (b) is the experimental results that image rejection ratio changes with IF frequency in embodiment.
Specific embodiment
Elaborate with reference to the accompanying drawing to the embodiment of the present invention: the present embodiment before being with technical solution of the present invention
It puts and is implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to down
The embodiment stated:
In this example, device includes: LD, DPMZM, WDM, two PD, Hybrid, two microwave signal sources, DC power supplies.
The delivery outlet of LD is connected by polarization maintaining optical fibre with the optical input of DPMZM, and the output end of two microwave signal sources is separately connected X-
The rf inputs of MZM and Y-MZM, modulator output end are connected with the public input terminal of WDM, and two output ends of WDM are separately connected
The electric signal of two PD, PD output is coupled by Hybrid.
In this example, the specific implementation step of method is:
Step 1: the continuous light carrier mean power that LD is generated is 16dBm, wavelength about 1552nm；Microwave signal source generates
RF signal frequency be 40GHz, power 0dBm, the LO signal frequency of generation is 39.5GHz, power 10dBm；DPMZM's
Half-wave voltage is about 3.5V, and band is wider than 30GHz, and extinction ratio is all larger than 30dB；WDM channel spacing is 50GHz, 3dB passband band
Wide 31GHz；The bandwidth of PD is about 1GHz, responsiveness 0.9A/W；0.5-1GHz of Hybrid working frequency.
Step 2: the passband response of two adjacent pass-bands of WDM (CH1 and CH2) is tested first, such as two dotted lines in Fig. 2 (a)
It is shown, it then adjusts LD wavelength and places it in the two bandpass centers；
Step 3: adjusting three biass of modulator by DC voltage source, and X-MZM and Y-MZM is made to work in smallest point, main
Modulator offset angle is 45 degree, into shown in solid in the optical signal such as Fig. 2 (a) of WDM, two ways of optical signals such as Fig. 2 of WDM output
(b) shown in, it can be seen that lower sideband is separated；
Step 4: LO frequency changes to 39.5GHz from 2.5GHz with 1GHz stepping, and being corresponding in turn to adjustment RF frequency makes IF frequency
Rate is fixed as 0.5GHz, by the way that the RF frequency ratio high or low 0.5GHz of LO is arranged, measures the 0.5GHz carrier frequency of Hybrid output respectively
IF signal power, that is, correspond to signal and image frequency component power, image rejection ratio is with LO frequency variation curve such as Fig. 3
(a) shown in, it can be seen that image rejection ratio is higher than 50dB in 4.5-39.5GHz frequency ranges；
Step 5: fixed LO frequency is 39.5GHz, and RF frequency is changed with 0.1GHz stepping from 39.6 to 40GHz, measures IF
Signal power is corresponding desired signal power；Then RF frequency is changed with 0.1GHz stepping from 39.4 to 39GHz, measures IF
Signal power inhibits component power for corresponding mirror image；It, can shown in the change curve such as Fig. 3 (b) of image rejection ratio with IF frequency
To see that image rejection ratio is maintained at 50dB or more when IF frequency changes from 0.5GHz to 1GHz.
In this example, image rejection ratio can be calibrated by the optical power of MAIN MUX offset angle and two-way.
To sum up, a kind of microwave photon mirror image based on DPMZM modulator of the present invention inhibits down conversion method, is simply easy to real
It is existing, there is apparent superiority bandwidth, image rejection ratio is high.
In short, embodiments described above is only the embodiment of the present invention, not it is only used for limiting guarantor of the invention
Protect range, it is noted that for those skilled in the art, can be in present disclosure
Several equivalent variations and replacement are made, RF, LO and IF frequency, optical carrier wavelength, WDM pass band width etc. are all changeable.These etc.
It also should be regarded as the scope of protection of the invention with deformation and replacement and the adjustment of frequency range.
Claims (1)
1. a kind of microwave photon mirror image based on DPMZM modulator inhibits down conversion method, which is characterized in that laser LD output
Light carrier connection double parallel Mach increase Dare modulator DPMZM input terminal, radiofrequency signal RF and local oscillation signal LO connect respectively
Two rf inputs mouths of DPMZM are connect, the public input terminal of the output end connection wavelength division multiplexer WDM of DPMZM, WDM will
Two photoelectric detector PDs, two photodetector connection electricity are separately connected after the optical signal lower sideband separation of DPMZM output
Two input ports of orthocoupler Hybrid are 45 degree by adjusting the main offset angle of DPMZM, then electric orthocoupler is defeated
The intermediate-freuqncy signal that exit port is exported is able to suppress image frequency.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107528638B (en) * | 2017-07-27 | 2019-12-10 | 西安电子科技大学 | Broadband microwave signal arrival angle estimation method based on microwave photon filtering |
| CN108616307A (en) * | 2018-03-01 | 2018-10-02 | 上海卫星工程研究所 | The frequency converter based on microwave photon technology applied to geostationary orbit satellite |
| CN111478734B (en) * | 2019-01-24 | 2021-08-20 | 西安电子科技大学 | Low intermediate frequency photon broadband radio frequency receiving method based on K-K detection |
| CN111641461B (en) * | 2019-03-01 | 2021-10-15 | 西安电子科技大学 | Filtering-free image rejection down-conversion method based on cascade modulator |
| 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 |
| CN112311469B (en) * | 2019-07-30 | 2021-12-31 | 华为技术有限公司 | Microwave photon down converter and microwave receiving system based on DPMZM |
| CN112564811B (en) * | 2020-12-13 | 2023-11-10 | 西北工业大学 | Large dynamic range microwave photon I/Q down-conversion device and adjusting method |
| CN112929087B (en) * | 2021-01-28 | 2022-04-22 | 中国科学院半导体研究所 | Image frequency suppression mixing transmission method and device |
| CN114826428B (en) * | 2022-03-03 | 2023-11-21 | 北京邮电大学 | Image-suppressed down-conversion linearization microwave photon link system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106209246A (en) * | 2016-05-27 | 2016-12-07 | 西安电子科技大学 | Dual Drive DPMZM is utilized to realize the device and method of microwave frequency conversion |
| CN106411408A (en) * | 2016-09-26 | 2017-02-15 | 西安电子科技大学 | Device for generating millimeter waves based on PDM-DPMZM modulator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8077375B2 (en) * | 2009-11-11 | 2011-12-13 | At&T Intellectual Property I, L.P. | Method and apparatus for generating 8-QAM-modulated optical signal |
-
2017
- 2017-02-24 CN CN201710126336.6A patent/CN106961252B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106209246A (en) * | 2016-05-27 | 2016-12-07 | 西安电子科技大学 | Dual Drive DPMZM is utilized to realize the device and method of microwave frequency conversion |
| CN106411408A (en) * | 2016-09-26 | 2017-02-15 | 西安电子科技大学 | Device for generating millimeter waves based on PDM-DPMZM modulator |
Non-Patent Citations (2)
| Title |
|---|
| A photonic phased array using frequency quadrupling without optical filtering;Yuta Hasegawa等;《2016 International Symposium on Antennas and Propagation》;20161028;第690-691页 |
| Full-band direct-conversion receiver with enhanced port isolation and I/Q phase balance using microwave photonic I/Q mixer;李建强等;《CHINESE OPTICS LETTERS》;20170110;第15卷(第1期);第1-3页 |
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