CN103441410A - Optical loop device and photoelectric oscillator based on optical loop energy storage and filtering - Google Patents
Optical loop device and photoelectric oscillator based on optical loop energy storage and filtering Download PDFInfo
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Abstract
Provided is an optical loop device and a photoelectric oscillator based on optical loop energy storage and filtering. An optical loop with a relative short optical fiber length is applied by the optical loop device to realize energy storage. After the optical loop is used for forming the photoelectric oscillator, a high-quality signal is obtained and usage of optical fibers in the photoelectric oscillator is reduced simultaneously. The beneficial effects of the invention are that: the photoelectric oscillator with high performance is provided, a problem in the prior art that optical fiber length needed to realize low noise may reach kilometer magnitude is solved, sensitivity of the photoelectric oscillator to temperature change is reduced, inhibition effect is effectively performed on starting vibration of side formwork and thus stray is eliminated.
Description
Technical field
The present invention relates to a kind of optical-electronic oscillator, relate in particular to a kind of optical loop device and the optical-electronic oscillator based on optical loop energy storage and filtering.
Background technology
Oscillator is important core devices in signal emission or receiving system, and it has been widely used in the technology such as communication, radar, signal processing, radio astronomy, sensing, tolerance relating to the links that electromagnetic wave signal produces, receives and process.At ask for something in strict application demand, need oscillator can produce X-band, Ka wave band equifrequent is higher, and there is the signal of ultralow phase noise.
Conventional oscillator is quartz oscillator and atomic clock, and they can produce the signal of ultralow phase noise by the oscillation mode of high Q value, but its signal frequency only has several MHz to hundreds of MHz, if will produce the signal of higher frequency, just need to carry out frequency multiplication; But unfortunately, along with the increase of frequency multiplication number of times, the also increase at double of the phase noise of oscillator, frequency increases by 10 times usually, and phase noise will worsen 20dB; This also just means microwave and the millimeter wave frequency band at high frequencies such as X, Ka, and the phase noise of oscillator is by severe exacerbation.
In order to address the above problem, unremitting effort through those skilled in the art, a kind of novel high performance oscillator arises at the historic moment, be that optical-electronic oscillator (optoelectronic oscillator) is (referring to L. Maleki, " The optoelectronic oscillator ", Nature Photonics, 2011, 5 (24): 728-730.), optical-electronic oscillator is to using optical fiber or the optical resonantor energy-accumulating medium as high Q value, pass through electric light, electrooptical device forms the feedback loop that photoelectricity mixes, when adding microwave amplifier, while making the gain of whole system be greater than loss, under certain modeling mechanism, will vibrate to swash and penetrate the high-quality microwave/millimeter-wave signal that produces low phase noise, wherein, the energy-accumulating medium of high Q value is to reduce the core component of signal phase noise in optical-electronic oscillator, in prior art, the energy-accumulating medium that generally adopts optical fiber that length is longer or optical resonantor to form high Q value, but these two kinds are realized that all there is certain problem in means:
At first, for long optical fibers, have two problems: one is to bring spuious, signal quality deteriorates; Another is influenced by ambient temperature serious;
Generally, the length that increases optical fiber can effectively increase the energy storage time of optical-electronic oscillator, thereby reduce the phase noise of signal, but in order to obtain the signal that phase noise is extremely low, can only could realize by the length that significantly increases optical fiber, this just makes fiber lengths when obtaining low phase noise but reach kilometers, thereby the intrinsic longitudinal mode spacing that causes optical-electronic oscillator will be reduced to tens kHz magnitudes, due to the performance impact that is subject to microwave filter, microwave filter in the filter pass band bandwidth of high band in tens MHz magnitudes, therefore be difficult to realize single-mode oscillation, the starting of oscillation of limit mould will bring spuious, thereby make the quality of the signal of generation occur deteriorated, in order to address this problem, the researcher has proposed employing dicyclo or multiring structure, when guaranteeing low phase noise, widen longitudinal mode spacing, just can make the limit mould obtain certain inhibition, although this structure can solve spuious problem to a certain extent, but and can't overcome optical fiber problem influenced by ambient temperature, because during variation of ambient temperature, the effective refractive index of optical fiber also will change, the eigenmodes of vibration ring cavity will change like this, thereby cause the frequency of the microwave/millimeter wave signal of generation to be drifted about, especially when optical fiber is longer, any minor variations of ambient temperature, all can obviously appear suddenly in the drift of frequency.
In addition, concerning optical resonantor forms the optical-electronic oscillator of energy-accumulating medium of high Q value, want to produce the signal of low phase noise, just require optical resonantor to there is high Q value; This has extremely low roughness with regard to the sidewall that needs optical resonantor, usually will reach the level of nanometer scale; This has just proposed high requirement to the manufacture craft of optical resonantor, is very difficult to realize.Even and realized such technique, make the roughness of optical resonantor sidewall reach the nm magnitude, the phase noise of the microwave/millimeter wave signal produced is still higher, and the phase noise of this signal that optical-electronic oscillator produces based on optical resonantor of external report is than the high 20～30dB of the optical-electronic oscillator based on long optical fibers at present.
Summary of the invention
In order to solve the problem in background technology, the present invention proposes a kind of optical-electronic oscillator based on optical loop energy storage and filtering, its structure is: described optical-electronic oscillator is comprised of pump light source, electrooptic modulator, optical loop device, optical branching device one, photodetector, microwave filter, microwave amplifier and microwave power distributor;
Described optical branching device one is the single-input double-output pattern, and two outputs are designated as respectively output one and output two, and the splitting ratio of output one and output two is 90 ﹕ 10;
Correlation between aforementioned all parts is:
Pump light source is connected with the input light path of electrooptic modulator; The output of electrooptic modulator is connected with the input light path of optical loop device; The output of optical loop device is connected with the input light path of optical branching device one;
The output one of optical branching device one is connected with the input light path of photodetector; The output two of optical branching device one forms the first output of optical-electronic oscillator, for exporting the light wave that has loaded microwave signal;
The output of photodetector is connected with the input of microwave filter, and the output of microwave filter is connected with the input of microwave amplifier, and the output of microwave amplifier is connected with the input of microwave power distributor;
Described microwave power distributor adopts the single-input double-output pattern, and the merit proportion by subtraction of two outputs of microwave power distributor is 1 ﹕ 1; One of them output of microwave power distributor forms the second output of optical-electronic oscillator, for outwards exporting microwave signal; Another output of microwave power distributor is connected with the rf inputs of electrooptic modulator, for forming closed photoelectricity mixing oscillation circuit;
Described optical loop device is comprised of optical combiner, semiconductor optical amplifier, optical band pass filter and optical branching device two;
Described optical combiner is the single output mode of dual input, and two inputs are designated as respectively input A and input B, and the splitting ratio of input A and input B is 50 ﹕ 50; Optical branching device two is the single-input double-output pattern, and two outputs are designated as respectively output terminals A and output B, and the splitting ratio of output terminals A and output B is 95 ﹕ 5;
The input A of optical combiner forms the input of optical loop device; The input B of optical combiner is connected with the output terminals A light path of optical branching device two; The output of optical combiner is connected with the input light path of semiconductor optical amplifier;
The output of semiconductor optical amplifier is connected with the input light path of optical band pass filter; The output of optical band pass filter is connected with the input light path of optical branching device two;
The output B of optical branching device two forms the output of optical loop device.
The function that in aforementioned schemes, all parts rose is respectively:
1) pump light source is used to the optical loop device that pump light is provided;
2) electrooptic modulator is for being modulated to light wave by the microwave/millimeter wave signal.
3) the optical loop device provides the energy storage of large amount of delay on the one hand for optical-electronic oscillator, realizes on the other hand the filter function of super arrowband, to reach the purpose that suppresses limit mould (spuious);
Wherein, optical combiner is realized two functions: one, exterior light excitation is imported in optical loop, its two, the part in the output light of optical branching device two is led, this part light is circulated in optical loop;
The splitting ratio of optical branching device two is 95:5, and wherein, 95% light recycles in optical loop, and 5% light is outwards exported;
Semiconductor optical amplifier (be semiconductor optical amplifier, be called for short SOA), the effect of SOA is the spontaneous emission light and the pump light generation XGM that carries the microwave/millimeter wave signal that enters optical loop made in it; When there is no pump light from the input of the input of optical loop device, in fact optical loop has formed one and take the fiber laser that SOA is gain media, the laser wavelength lambda that SOA produces
1centre wavelength by optical band pass filter determines, and this laser is continuous light; When modulation has the pump light of microwave signal, (its wavelength is designated as λ
2) while being inputted by the input of optical loop device, due to the cross-gain modulation of SOA inside, can be λ by the anti-phase wavelength that is modulated to of the microwave signal of modulating on pump light
1flashlight on, simultaneously due to λ
1with λ
2between have certain off resonance amount, wavelength is λ
2pump light will be filtered out by optical band pass filter, will only have like this wavelength is λ
1flashlight in optical loop, move in circles; Usually, for the filter of an infinite impulse response, the number of turns moved in circles is more, and the passband of filtering is just narrower; Because wavelength is λ
1flashlight take SOA and produce as gain media, Injection Current one timing as SOA, even being arranged, optical branching device within two minutes, walked 10% power stage, still can stable maintenance by the power of the flashlight of SOA output, therefore principle, flashlight can move in circles without a few, and the filter pass band of so last generation will be infinitely narrow; Although in practical devices, because the carrier recovery time of SOA is limited, cause the reciprocal number of turns of actual cycle conditional, but this has been enough to realize super narrow filtering characteristic (reality obtains filtering bandwidth as shown in Figure 3, only 132.77kHz).
The function of optical band pass filter is: the bandwidth of optical band pass filter is narrower, be used for extracting the part spontaneous emission light of SOA, owing between the centre wavelength of filter passband and pumping light wavelength, certain off resonance amount being arranged, therefore also played the effect of filtering pump light.
4) splitting ratio of optical branching device one is 90:10, and wherein 10% light is for directly exporting the light wave that is loaded with microwave signal, and 90% light is inputted photodetector.
5) photodetector is for being demodulated into the microwave/millimeter wave signal by light signal.
6) microwave filter is the band pass filter that is operated in the microwave/millimeter wave frequency range, for the frequency of the required generation of selective light electrical oscillator.
7) microwave amplifier is the low noise amplifier that is operated in the microwave/millimeter wave frequency range, is used to optical-electronic oscillator that gain is provided.
8) microwave power distributor is the power splitter that is operated in the microwave/millimeter wave frequency range, and the merit proportion by subtraction is 5:5, for extracting the microwave/millimeter wave signal of the oscillation circuit (by the formed loop of all devices) that photoelectricity mixes.
Operation principle of the present invention is: the optical-electronic oscillator obtained by the solution of the present invention, formed a kind of self-starting oscillator that noise is seed source of take, under the modeling effect of microwave filter, make the gain of special frequency channel be greater than loss, swash thereby produce vibration the microwave/millimeter wave signal of penetrating, optical resonance effect due to optical loop, the group delay amount that enhancing is arranged under specific optical wavelength, after such optical loop accesses whole oscillation circuit, can significantly reduce fiber lengths (in model machine of the present invention, optical fiber consumption in optical loop is only for 2m) condition under make oscillation circuit obtain (this miniaturization for device and integrated and reduce installation cost of very large energy storage time, its benefit is not sayed and is instructed), thereby reduce the phase noise of optical-electronic oscillator output signal (wherein, optical fiber only plays necessary leaded light connection function, no longer need it to play the energy storage effect), this has just solved in prior art, while with optical fiber, forming the energy-accumulating medium of high Q value, need to rely on the problem that the increase fiber lengths reduces phase noise, simultaneously also with regard to having solved, roll up the series of problems brought because of fiber lengths, especially solve long length fiber and need to carry out to ambient temperature the problem of accurate temperature controlling, greatly reduce optical-electronic oscillator to the dependency degree of environmental temperature stability with to the requirement of attemperating unit, and the shortening due to fiber lengths, make the frequency drift that causes because of ambient temperature also obtain reduction to the sensitiveness of variations in temperature,
In addition, because optical loop has utilized the XGM in SOA, realized the microwave filtering of super arrowband at high band, thereby effectively suppressed limit mould starting of oscillation, eliminated spuious.
Preferably, described pump light source is semiconductor laser or fiber laser.
Preferably, described electrooptic modulator is Mach-Ze De type light intensity modulator.
Preferably, described photodetector adopts response duration to reach the high-speed photodetector of Ka wave band.
For aforesaid optical loop device, the present invention also wishes to obtain protection, therefore the present invention has also proposed following scheme for the optical loop device: described optical loop device is comprised of optical combiner, semiconductor optical amplifier, optical band pass filter and optical branching device two;
Described optical combiner is the single output mode of dual input, and two inputs are designated as respectively input A, input B, and the splitting ratio of input A and input B is 50 ﹕ 50; Optical branching device two is the single-input double-output pattern, and two outputs are designated as respectively output terminals A, output B, and the splitting ratio of output terminals A and output B is 95 ﹕ 5;
The input A of optical combiner forms the input of optical loop device, for the exterior light excitation is imported in the optics loop device; The input B of optical combiner is connected with the output terminals A light path of optical branching device two; The output of optical combiner is connected with the input light path of semiconductor optical amplifier;
The output of semiconductor optical amplifier is connected with the input light path of optical band pass filter; The output of optical band pass filter is connected with the input light path of optical branching device two;
The output B of optical branching device two forms the output of optical loop device, for the light signal by after modulation, outwards exports.
When this optical loop device being done to optical-electronic oscillator application of the present invention, its operation principle is the same.
Useful technique effect of the present invention has:
1) the stable output signal degree of having avoided using long optical fibers to cause is problem influenced by ambient temperature easily.
Adopt the optical-electronic oscillator (no matter being the situation of monocycle, dicyclo or many rings) of long optical fibers, in order to obtain the output signal of low phase noise, usually adopt the optical fiber of several kilometers; If its optical fiber effective length is 4km, for the output signal of X-band, when 0.1 ℃ of variation of ambient temperature, the frequency of the output signal 5.6kHz～8.4kHz that will drift about, this is by the frequency stability of severe exacerbation output signal.Because the present invention uses the optical loop energy storage, the actual fiber lengths 2m that only has an appointment, therefore during 0.1 ℃ of variation of ambient temperature, adopt the frequency of the optical-electronic oscillator output signal of the optical loop 2.8Hz～4.2Hz that will drift about, this is greatly improved with regard to the frequency stability that makes output signal.
2) the optical loop energy storage can effectively reduce the phase noise of output signal
Because the present invention has adopted the optical loop energy storage, although the fiber lengths of loop only has 2m, the phase noise of output signal has obtained good inhibition; As shown in Figure 4 and Figure 5, with fiber lengths, only have the existing optical-electronic oscillator of 2m to compare, more than the phase noise of the optical-electronic oscillator output signal of employing optical loop (fiber lengths is 2m) has reduced 50dB.
3) the super narrow-band filtering of optical loop can effectively reduce the spuious of output signal
The optical loop adopted due to the present invention has the characteristic of super narrow-band filtering, and still can realize that at high bands such as X, Ka filter pass band is less than the super narrow-band filtering of 150kHz; The filter effect schematic diagram that Fig. 3 is optical loop of the present invention, as can be seen from the figure the centre frequency of filtering is about 10GHz, and pass band width is about 133kHz.When if the super narrow filtering characteristic of optical loop is inoperative, only have common microwave filter (its pass band width is generally tens MHz magnitudes) to carry out modeling, the phase noise curve of consequent microwave signal as shown in Figure 6, can be found out and have obvious limit mould (spuious) to exist; When the super narrow filtering characteristic of optical loop works, the phase noise curve of the microwave signal produced as shown in Figure 7, can see that the limit mould (spuious) of output signal has obtained good inhibition.
The accompanying drawing explanation
Fig. 1, principle of device schematic diagram of the present invention;
Fig. 2, optical loop are realized the principle schematic of super narrow-band filtering;
Fig. 3, optical loop filter effect schematic diagram;
The phase noise collection of illustrative plates of the optical-electronic oscillator output signal that Fig. 4, fiber lengths are 2m;
The phase noise collection of illustrative plates of Fig. 5, the optical-electronic oscillator output signal based on optical loop (fiber lengths is 2m) of the present invention;
Fig. 6, the phase noise collection of illustrative plates of microwave signal that adopts the optical-electronic oscillator of common microwave filter filtering to produce;
The phase noise collection of illustrative plates of the microwave signal that Fig. 7, the optical-electronic oscillator based on optical loop filtering of the present invention produce;
In figure, the corresponding parts of each mark are respectively: 1, electrooptic modulator 2, optical loop device 3, optical combiner 3-1, semiconductor optical amplifier 3-2, optical band pass filter 3-3, optical branching device two 3-4, optical branching device 1, photodetector 5, microwave filter 6, microwave amplifier 7, microwave power distributor 8.
Embodiment
A kind of optical-electronic oscillator based on optical loop energy storage and filtering, described optical-electronic oscillator is comprised of pump light source 1, electrooptic modulator 2, optical loop device 3, optical branching device 1, photodetector 5, microwave filter 6, microwave amplifier 7 and microwave power distributor 8;
Described optical branching device 1 is the single-input double-output pattern, and two outputs are designated as respectively output one and output two, and the splitting ratio of output one and output two is 90 ﹕ 10;
Correlation between aforementioned all parts is:
Pump light source 1 is connected with the input light path of electrooptic modulator 2; The output of electrooptic modulator 2 is connected with the input light path of optical loop device 3; The output of optical loop device 3 is connected with the input light path of optical branching device 1;
The output one of optical branching device 1 is connected with the input light path of photodetector 5; The output two of optical branching device 1 forms the first output of optical-electronic oscillator, for exporting the light wave (seeing shown in Fig. 1 mark D) that has loaded microwave signal;
The output of photodetector 5 is connected with the input of microwave filter 6, and the output of microwave filter 6 is connected with the input of microwave amplifier 7, and the output of microwave amplifier 7 is connected with the input of microwave power distributor 8;
Described microwave power distributor 8 adopts the single-input double-output pattern, and the merit proportion by subtraction of two outputs of microwave power distributor 8 is 1 ﹕ 1; One of them output of microwave power distributor 8 forms the second output of optical-electronic oscillator, for outwards exporting microwave signal (seeing shown in Fig. 1 mark C); Another output of microwave power distributor 8 is connected with the rf inputs of electrooptic modulator 2, for forming closed photoelectricity mixing oscillation circuit;
Described optical loop device 3 is comprised of optical combiner 3-1, semiconductor optical amplifier 3-2, optical band pass filter 3-3 and optical branching device two 3-4;
Described optical combiner 3-1 is the single output mode of dual input, and two inputs are designated as respectively input A and input B, and the splitting ratio of input A and input B is 50 ﹕ 50; Optical branching device two 3-4 are the single-input double-output pattern, and two outputs are designated as respectively output terminals A and output B, and the splitting ratio of output terminals A and output B is 95 ﹕ 5;
The input A of optical combiner 3-1 forms the input of optical loop device 3; The input B of optical combiner 3-1 is connected with the output terminals A light path of optical branching device two 3-4; The output of optical combiner 3-1 is connected with the input light path of semiconductor optical amplifier 3-2;
The output of semiconductor optical amplifier 3-2 is connected with the input light path of optical band pass filter 3-3; The output of optical band pass filter 3-3 is connected with the input light path of optical branching device two 3-4;
The output B of optical branching device two 3-4 forms the output of optical loop device 3.
Further, described pump light source 1 is semiconductor laser or fiber laser.
Further, described electrooptic modulator 2 is Mach-Ze De type light intensity modulator.
Further, described photodetector 5 adopts response duration to reach the high-speed photodetector of Ka wave band.
A kind of optical loop device, described optical loop device 3 is comprised of optical combiner 3-1, semiconductor optical amplifier 3-2, optical band pass filter 3-3 and optical branching device two 3-4;
Described optical combiner 3-1 is the single output mode of dual input, and two inputs are designated as respectively input A, input B, and the splitting ratio of input A and input B is 50 ﹕ 50; Optical branching device two 3-4 are the single-input double-output pattern, and two outputs are designated as respectively output terminals A, output B, and the splitting ratio of output terminals A and output B is 95 ﹕ 5;
The input A of optical combiner 3-1 forms the input of optical loop device 3, for the exterior light excitation is imported in optics loop device 3; The input B of optical combiner 3-1 is connected with the output terminals A light path of optical branching device two 3-4; The output of optical combiner 3-1 is connected with the input light path of semiconductor optical amplifier 3-2;
The output of semiconductor optical amplifier 3-2 is connected with the input light path of optical band pass filter 3-3; The output of optical band pass filter 3-3 is connected with the input light path of optical branching device two 3-4;
The output B of optical branching device two 3-4 forms the output of optical loop device 3, for the light signal by after modulation, outwards exports.
Implement for the ease of those skilled in the art, come the solution of the present invention is done to further explanation below in conjunction with accompanying drawing:
Principle of device schematic diagram of the present invention as shown in Figure 1, with existing optical-electronic oscillator similarly, increase along with the oscillation circuit energy storage time, the longitudinal mode spacing of oscillation circuit will reduce thereupon, if it is not suppressed, just have a lot of patterns and have the sharp possibility of penetrating of vibration in wider microwave filter passband; And the optical loop device in the present invention utilizes the cross modulation effect in SOA, formed a microwave photon filter with extremely narrow filter pass band; Its filter pass band can reach the following level (minimum in the data that experiment records is about 132.77kHz) of 150kHz, the filter effect of microwave photon filter as shown in Figure 3, like this under the modeling effect of the super narrow filter pass band of optical loop, will only have single pattern starting of oscillation, thereby reach the effect of inhibition limit mould (spuious); Make the microwave/millimeter wave signal of output have advantages of that phase noise is low, spuious little.
Reduce the effect of phase noise in order to compare the present invention, adopt respectively the existing optical-electronic oscillator based on the long optical fibers energy storage and the optical-electronic oscillator that the present invention is based on the optical loop energy storage to be tested, the length of the energy storage optical fiber of optical fiber electric oscillation and the Fiber In The Loop FITE of optical loop optical-electronic oscillator of the present invention all is set to 2m, the phase noise collection of illustrative plates of existing optical fiber electrical oscillator output signal as shown in Figure 4, the phase noise collection of illustrative plates of optical loop optical-electronic oscillator output signal as shown in Figure 5, from the contrast of two secondary figure, can find out, after adopting the present invention program, more than the phase noise of output signal has reduced 50dB.
Suppress spuious effect in order to compare the present invention, will only have the optical-electronic oscillator of common microwave filter (its pass band width is generally tens MHz magnitudes) filtering and the optical-electronic oscillator that the present invention is based on optical loop filtering to be contrasted; The energy storage time of supposing the two is 10 μ s, and the phase noise collection of illustrative plates of the microwave signal that the former produces as shown in Figure 6, can be found out and have obvious limit mould (spuious) to exist; And the phase noise collection of illustrative plates of the microwave signal that the latter produces as shown in Figure 7, can see that the limit mould (spuious) of the optical-electronic oscillator output signal of the super narrow-band filtering effect based on optical loop has obtained good inhibition.
Claims (5)
1. the optical-electronic oscillator based on optical loop energy storage and filtering, it is characterized in that: described optical-electronic oscillator is comprised of pump light source (1), electrooptic modulator (2), optical loop device (3), optical branching device one (4), photodetector (5), microwave filter (6), microwave amplifier (7) and microwave power distributor (8);
Described optical branching device one (4) is the single-input double-output pattern, and two outputs are designated as respectively output one and output two, and the splitting ratio of output one and output two is 90 ﹕ 10;
Correlation between aforementioned all parts is:
Pump light source (1) is connected with the input light path of electrooptic modulator (2); The output of electrooptic modulator (2) is connected with the input light path of optical loop device (3); The output of optical loop device (3) is connected with the input light path of optical branching device one (4);
The output one of optical branching device one (4) is connected with the input light path of photodetector (5); The output two of optical branching device one (4) forms the first output of optical-electronic oscillator, for exporting the light wave that has loaded microwave signal;
The output of photodetector (5) is connected with the input of microwave filter (6), the output of microwave filter (6) is connected with the input of microwave amplifier (7), and the output of microwave amplifier (7) is connected with the input of microwave power distributor (8);
Described microwave power distributor (8) adopts the single-input double-output pattern, and the merit proportion by subtraction of two outputs of microwave power distributor (8) is 1 ﹕ 1; One of them output of microwave power distributor (8) forms the second output of optical-electronic oscillator, for outwards exporting microwave signal; Another output of microwave power distributor (8) is connected with the rf inputs of electrooptic modulator (2), for forming closed photoelectricity mixing oscillation circuit;
Described optical loop device (3) is comprised of optical combiner (3-1), semiconductor optical amplifier (3-2), optical band pass filter (3-3) and optical branching device two (3-4);
Described optical combiner (3-1) is the single output mode of dual input, and two inputs are designated as respectively input A and input B, and the splitting ratio of input A and input B is 50 ﹕ 50; Optical branching device two (3-4) is the single-input double-output pattern, and two outputs are designated as respectively output terminals A and output B, and the splitting ratio of output terminals A and output B is 95 ﹕ 5;
The input A of optical combiner (3-1) forms the input of optical loop device (3); The input B of optical combiner (3-1) is connected with the output terminals A light path of optical branching device two (3-4); The output of optical combiner (3-1) is connected with the input light path of semiconductor optical amplifier (3-2);
The output of semiconductor optical amplifier (3-2) is connected with the input light path of optical band pass filter (3-3); The output of optical band pass filter (3-3) is connected with the input light path of optical branching device two (3-4);
The output B of optical branching device two (3-4) forms the output of optical loop device (3).
2. the optical-electronic oscillator based on optical loop energy storage and filtering according to claim 1 is characterized in that: described pump light source (1) is semiconductor laser or fiber laser.
3. the optical-electronic oscillator based on optical loop energy storage and filtering according to claim 1, it is characterized in that: described electrooptic modulator (2) is Mach-Ze De type light intensity modulator.
4. the optical-electronic oscillator based on optical loop energy storage and filtering according to claim 1 is characterized in that: described photodetector (5) adopts response duration to reach the high-speed photodetector of Ka wave band.
5. an optical loop device, it is characterized in that: described optical loop device (3) is comprised of optical combiner (3-1), semiconductor optical amplifier (3-2), optical band pass filter (3-3) and optical branching device two (3-4);
Described optical combiner (3-1) is the single output mode of dual input, and two inputs are designated as respectively input A, input B, and the splitting ratio of input A and input B is 50 ﹕ 50; Optical branching device two (3-4) is the single-input double-output pattern, and two outputs are designated as respectively output terminals A, output B, and the splitting ratio of output terminals A and output B is 95 ﹕ 5;
The input A of optical combiner (3-1) forms the input of optical loop device (3), for the exterior light excitation is imported in optics loop device (3); The input B of optical combiner (3-1) is connected with the output terminals A light path of optical branching device two (3-4); The output of optical combiner (3-1) is connected with the input light path of semiconductor optical amplifier (3-2);
The output of semiconductor optical amplifier (3-2) is connected with the input light path of optical band pass filter (3-3); The output of optical band pass filter (3-3) is connected with the input light path of optical branching device two (3-4);
The output B of optical branching device two (3-4) forms the output of optical loop device (3), for the light signal by after modulation, outwards exports.
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| CN107039883A (en) * | 2017-05-17 | 2017-08-11 | 浙江大学 | A kind of optical-electronic oscillator based on frequency-selecting of intermediate frequency |
| CN108649413A (en) * | 2018-05-15 | 2018-10-12 | 中国科学院半导体研究所 | Optical-electronic oscillator based on parity-time symmetry principle |
| CN110718835A (en) * | 2019-10-18 | 2020-01-21 | 北京无线电计量测试研究所 | Novel microwave source |
| CN110729623A (en) * | 2019-10-18 | 2020-01-24 | 北京无线电计量测试研究所 | Microwave source |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002071653A2 (en) * | 2001-03-08 | 2002-09-12 | Whitedove Business Corp. | Method and apparatus for generating optical signals |
| WO2006099616A2 (en) * | 2005-03-17 | 2006-09-21 | Oewaves, Inc. | Coupled and non-coupled opto-electronic oscillators with enhanced performance |
| US7978740B1 (en) * | 2004-01-06 | 2011-07-12 | University Of Central Florida Research Foundation, Inc. | Ultralow noise mode-locked laser and RF sinewave source |
-
2013
- 2013-09-05 CN CN201310399459.9A patent/CN103441410B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002071653A2 (en) * | 2001-03-08 | 2002-09-12 | Whitedove Business Corp. | Method and apparatus for generating optical signals |
| US7978740B1 (en) * | 2004-01-06 | 2011-07-12 | University Of Central Florida Research Foundation, Inc. | Ultralow noise mode-locked laser and RF sinewave source |
| WO2006099616A2 (en) * | 2005-03-17 | 2006-09-21 | Oewaves, Inc. | Coupled and non-coupled opto-electronic oscillators with enhanced performance |
Non-Patent Citations (3)
| Title |
|---|
| LUTE MALEKI: "The optoelectronic oscillator", 《NATURE PHOTONICS》, vol. 5, 31 December 2011 (2011-12-31) * |
| X.STEVE YAO ET AL.: "Dual microwave and optical oscillator", 《OPTICS LETTERS》, vol. 22, no. 24, 15 December 1997 (1997-12-15), XP000733989 * |
| 周俐娜 等: "基于半导体光放大器的一阶IIR微波光子学滤波器及其品质因素分析", 《物理学报》, vol. 58, no. 2, 28 February 2009 (2009-02-28) * |
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| CN104377533B (en) * | 2014-11-10 | 2017-03-22 | 中国电子科技集团公司第四十四研究所 | Phase shift optical grating based frequency self-stabilization photoelectric oscillator |
| CN105547336A (en) * | 2015-12-02 | 2016-05-04 | 厦门大学 | Fiber grating sensing demodulation device and method on the basis of photoelectric oscillation loop |
| CN105547336B (en) * | 2015-12-02 | 2018-01-23 | 厦门大学 | Fiber grating sensing demodulation apparatus and method based on optoelectronic oscillation loop |
| CN105896236A (en) * | 2016-06-30 | 2016-08-24 | 哈尔滨工业大学 | Dual-long-loop structured filter-free wideband-tunable photoelectric oscillator |
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| CN107039883A (en) * | 2017-05-17 | 2017-08-11 | 浙江大学 | A kind of optical-electronic oscillator based on frequency-selecting of intermediate frequency |
| CN107039883B (en) * | 2017-05-17 | 2019-01-29 | 浙江大学 | A kind of optical-electronic oscillator based on frequency-selecting of intermediate frequency |
| CN108649413A (en) * | 2018-05-15 | 2018-10-12 | 中国科学院半导体研究所 | Optical-electronic oscillator based on parity-time symmetry principle |
| CN108649413B (en) * | 2018-05-15 | 2020-02-21 | 中国科学院半导体研究所 | Photoelectric oscillator based on space scale-time symmetry principle |
| CN110718835A (en) * | 2019-10-18 | 2020-01-21 | 北京无线电计量测试研究所 | Novel microwave source |
| CN110729623A (en) * | 2019-10-18 | 2020-01-24 | 北京无线电计量测试研究所 | Microwave source |
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