CN204464744U - A kind of microwave signal generation device - Google Patents
A kind of microwave signal generation device Download PDFInfo
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- CN204464744U CN204464744U CN201520105404.7U CN201520105404U CN204464744U CN 204464744 U CN204464744 U CN 204464744U CN 201520105404 U CN201520105404 U CN 201520105404U CN 204464744 U CN204464744 U CN 204464744U
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- microwave signal
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- wave tube
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Abstract
The utility model discloses a kind of microwave signal generation device, comprise laser element (101), modulator (102), energy-storage travelling wave tube (103), photodetector (104), amplifier (105) and coupler (106) based on capillary.First the laser that laser element produces enter modulator, signal after modulator shift frequency enters into the energy-storage travelling wave tube based on capillary, the signal exported through energy-storage travelling wave tube is converted to signal of telecommunication output by photodetector, the signal of telecommunication exported is amplified in coupler through amplifier, this signal is coupled device and is divided into two bundle signals, the signal exported from coupler port is as the drive singal of modulator, and another port output signal of coupler exports as microwave signal.
Description
Technical field
The utility model relates to the method and apparatus that a kind of microwave signal based on capillary energy-storage travelling wave tube produces, and is mainly used in the technical fields such as wireless sense network, optical fiber telecommunications system and Microwave photonics.
Background technology
Along with the development of science and technology, need to produce, transmit and obtain a large amount of high speed informations.At present, approached the processing limit of electronic device based on digital electronic technology, occurred the problems such as the electronic bottleneck that bandwidth limits, the difficulty improving device processes speed is further increasing.Organically combined by the advantage such as low-loss and large bandwidth of mobility that microwave photon is learned a skill and optical fiber technology, effectively can solve the restrictions such as electronic bottleneck, therefore, optical technology just demonstrates the incomparable advantage of electronic technology in the generation etc. of microwave signal, makes full use of these advantages and just seems extremely important to realizing high speed full optical information technology.Therefore, researcher proposes the requirement of setting up all-optical information system.In fiber optic communication systems, the signal of transmission can be subject to the impact of the factors such as optical fiber dispersion and increase the error rate, and the higher impact be subject to of microwave frequency is larger.Therefore, the method that microwave current signal produces mainly concentrates in the methods such as the method for microwave frequency shift modulation, optical heterodyne and optical-electronic oscillator.In the method for microwave frequency shift modulation, must high-speed modulator etc. be used, limit the generation of high-frequency microwave signal, and expensive.The patent of invention CN20081006124.7 waiting proposition as bright in profound scholar, adopts the method for microwave source and electrooptic modulator to obtain the microwave signal of 11GHz.Some scholars propose and pass through Brillouin scattering, the scheme of microwave signal is obtained in conjunction with light heterodyne method, as the patent of invention CN200910155858.4 that Fu Jiaojiao etc. proposes, king, as just waited patent of invention CN201210341950.1 proposed, adopts the difference frequency of Brillouin scattering and pump light to obtain microwave signal.For the research aspect utilizing optical-electronic oscillator to produce microwave signal, at present, energy-storage travelling wave tube in the method all utilizes optical fiber as energy-storage travelling wave tube substantially, due to the restriction of optical fiber energy storage characteristic, its microwave signal being difficult to obtain high-quality is exported, and structure comparison is huge, and the tunable range producing microwave signal is less, limit its application in fields such as radars, and systematic comparison is complicated, adds the cost of system.
Summary of the invention
In order to overcome the defect existed in prior art, obtain the tunable microwave signal of high-frequency wideband, the utility model provides a kind of microwave signal generation device, this device can not only produce high-frequency microwave signal, and the tunable microwave signal of high-quality-factor bandwidth can be obtained, cost is low, and the microwave signal of output has steady performance.
In order to realize above-mentioned utility model object, the utility model provides a kind of microwave signal generation device, comprise laser element (101), modulator (102), energy-storage travelling wave tube (103), photodetector (104), amplifier (105) and coupler (106), the laser that laser element (101) exports after modulator (102) shift frequency as the drive singal of the energy-storage travelling wave tube (103) based on capillary, output signal based on the energy-storage travelling wave tube (103) of capillary is converted to the signal of telecommunication by photodetector (104), this signal of telecommunication is exaggerated after device (105) amplifies and is divided into two paths of signals through coupler (106) again, wherein a road signal is as the drive singal of modulator (102), another road signal exports as microwave signal, wherein said energy-storage travelling wave tube (103) is the annular Echo Wall energy-storage travelling wave tube based on capillary.
Further, described modulator (102) is electrooptic modulator.
Further, described energy-storage travelling wave tube (103) is made up of one or more levels unit.
Further, described laser element (101) is single frequency tuneable laser.
Further, described photodetector (104) is balanced detector.
Further, the tunable of microwave signal is by regulating the pumping wavelength of laser element (101) to obtain tunable microwave signal.
Further, the tunable of microwave signal obtains tunable microwave signal by the driving voltage of change modulator.
Compared with prior art, the utility model is by the annular Echo Wall energy storage device based on capillary, and obtain tunable microwave signal by controlling its radius, by the frequency regulating the wavelength of laser and the drive singal of modulation to carry out regulation output microwave signal; Thus high-frequency microwave signal can not only be produced, and multi-band wide tunable microwave signal can be obtained; Greatly reduce electromagnetic interference etc., and there is with low cost, the simple advantage of structure.
Accompanying drawing explanation
Fig. 1 is microwave signal generation device structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model embodiment.
Fig. 3 is the microwave signal frequency spectrum that the utility model embodiment obtains.
Embodiment
Below in conjunction with drawings and Examples the utility model be described in further detail and describe.
Embodiment: the present embodiment provides a kind of microwave signal generation device, its structure as shown in Figure 2, in this enforcement, laser 200 is tunable laser (Agilent 8164B), arranging output center wavelength is 1550nm, power is 0dBm, its light exported enters into Erbium-Doped Fiber Amplifier unit 201, this amplifier adopts KPS-BT2-C-30-PB-FA, peak power output 30dBm, output signal power is set to 10dBm, be amplified in electrooptic modulator 202 through Erbium-Doped Fiber Amplifier, this modulator is EOSPACE modulator, modulation bandwidth is 20GHz, light signal after modulation enters into energy-storage travelling wave tube 203, energy-storage travelling wave tube is drawn by accurate quartz capillary precast body to form, the purity of its quartz sand is about 99.999%, the external diameter of capillary is 120
, internal diameter 10
, the radius 2cm of annulus, be 80:20 with the coupling ratio of optical fiber, wherein the side of 20% is as output port, the flashlight exported from 20% port enters into photodetector 204, this detector is u2t high speed photodetector, bandwidth is 50GHz, be converted to the signal of telecommunication by photodetector 204 to export, this signal is amplified in coupler 206 through electric amplifier 205, two bundle signals are divided into through coupler 206 (70:30), wherein a road signal of 30% is as the drive singal of electrooptic modulator 202, the one road signal of 70% is that microwave signal exports, output signal carries out Measurement and analysis through Agilent spectrum analyzer (Agilent E4440A).As shown in Figure 3, as can be seen from Figure 3 the centre frequency of signal is 19.453GHz to the spectrum waveform of output signal, and the three dB bandwidth of signal is about 200kHz.
Just preferred embodiment of the present utility model described in this specification, above embodiment only for illustration of the technical solution of the utility model, but not to restriction of the present utility model.All those skilled in the art comply with design of the present utility model by logic analysis, reasoning or the available technical scheme of limited test, all should within scope of the present utility model.
Claims (7)
1. a microwave signal generation device, it is characterized in that comprising laser element (101), modulator (102), energy-storage travelling wave tube (103), photodetector (104), amplifier (105) and coupler (106), the laser that laser element (101) exports after modulator (102) shift frequency as the drive singal of the energy-storage travelling wave tube (103) based on capillary, output signal based on the energy-storage travelling wave tube (103) of capillary is converted to the signal of telecommunication by photodetector (104), this signal of telecommunication is exaggerated after device (105) amplifies and is divided into two paths of signals through coupler (106) again, wherein a road signal is as the drive singal of modulator (102), another road signal exports as microwave signal, wherein said energy-storage travelling wave tube (103) is the annular Echo Wall energy-storage travelling wave tube based on capillary.
2. microwave signal generation device according to claim 1, is characterized in that: described modulator (102) is electrooptic modulator.
3. microwave signal generation device according to claim 1, is characterized in that: described energy-storage travelling wave tube (103) is made up of one or more levels unit.
4. microwave signal generation device according to claim 1, is characterized in that: described laser element (101) is single frequency tuneable laser.
5. microwave signal generation device according to claim 1 and 2, is characterized in that: described photodetector (104) is balanced detector.
6. microwave signal generation device according to claim 1, is characterized in that: the tunable of microwave signal is by regulating the pumping wavelength of laser element (101) to obtain tunable microwave signal.
7. microwave signal generation device according to claim 1, is characterized in that: the tunable of microwave signal obtains tunable microwave signal by the driving voltage of change modulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520105404.7U CN204464744U (en) | 2015-02-13 | 2015-02-13 | A kind of microwave signal generation device |
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| CN201520105404.7U CN204464744U (en) | 2015-02-13 | 2015-02-13 | A kind of microwave signal generation device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701711A (en) * | 2015-02-16 | 2015-06-10 | 连云港科源光电科技有限公司 | Microwave signal generation device of capillary tube-based energy storage element |
| CN106067650A (en) * | 2016-07-15 | 2016-11-02 | 中国科学院半导体研究所 | Based on the microwave generator of warbling amplifying feedback laser |
| CN106067651A (en) * | 2016-07-15 | 2016-11-02 | 中国科学院半导体研究所 | Microwave generator of warbling based on distributed Bragg reflection laser |
-
2015
- 2015-02-13 CN CN201520105404.7U patent/CN204464744U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104701711A (en) * | 2015-02-16 | 2015-06-10 | 连云港科源光电科技有限公司 | Microwave signal generation device of capillary tube-based energy storage element |
| CN106067650A (en) * | 2016-07-15 | 2016-11-02 | 中国科学院半导体研究所 | Based on the microwave generator of warbling amplifying feedback laser |
| CN106067651A (en) * | 2016-07-15 | 2016-11-02 | 中国科学院半导体研究所 | Microwave generator of warbling based on distributed Bragg reflection laser |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150708 Termination date: 20160213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |