CN103259507A - Microwave photonic filter free of spurious interference based on optical frequency comb - Google Patents
Microwave photonic filter free of spurious interference based on optical frequency comb Download PDFInfo
- Publication number
- CN103259507A CN103259507A CN2013100640662A CN201310064066A CN103259507A CN 103259507 A CN103259507 A CN 103259507A CN 2013100640662 A CN2013100640662 A CN 2013100640662A CN 201310064066 A CN201310064066 A CN 201310064066A CN 103259507 A CN103259507 A CN 103259507A
- Authority
- CN
- China
- Prior art keywords
- frequency comb
- filter
- comb source
- frequency
- optical frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Optical Communication System (AREA)
Abstract
The invention provides a microwave photonic filter free of spurious interference based on an optical frequency comb. The microwave photonic filter free of the spurious interference based on the optical frequency comb comprises an optical frequency comb source, a quadratic-form phase processing unit, a modulator, a dispersive medium and a photoelectric detector, wherein the optical frequency comb source is used for carrying radio frequency signals to be filtered, each carrier wave component corresponds to a tap in a transverse filter structure, the quadratic-form phase processing unit is used for adjusting the whole optical phase of the optical frequency comb source too be a quadratic form, the modulator is used for modulating the radio frequency signals to be filtered to each carrier wave component of the optical frequency comb source, the dispersive medium is used for introducing equal delay among all carrier wave of the optical frequency comb source and enabling each carrier wave in the optical frequency comb source to be regarded as one tap in the transverse filter structure, and the photoelectric detector is used for converting optical signals into electric signals and outputting the filtered radio frequency signals. The microwave photonic filter free of spurious interference based on the optical frequency comb can effectively suppress the spurious frequency and does not affect the characteristic that the filter transmits the function. Passband tuning can not be limited by the traditional Nyquist area. In addition, the microwave photonic filter free of spurious interference based on the optical frequency comb has the advantages of being simple in structure and wide in application range.
Description
Technical field
The present invention relates to the microwave photon filter research field in microwave photon, be specifically related to a kind of no clutter interference microwave photon filter based on frequency comb.
Background technology
Microwave photon filter refer to utilize photon technology to the radio frequency microwave signal delay time, the technology of calculation process such as weighting, summation.Than the electronic signal process technology, photonic signal processing has advantages such as big time-bandwidth product, low-loss, light, the anti-electromagnetic interference low-loss of quality.Than the microwave filter based on electronic technology, microwave photon filter can have advantages such as big bandwidth, anti-electromagnetic interference in high-frequency range work, and its filter pass band can realize high selectivity, dynamic-tuning and restructural.
At present, based on the horizontal microwave photon filter of frequency comb source time-delay tap than the horizontal microwave photon filter of other finite impulse responses, have the ability that realizes many taps, humorous, any restructural of high-speed adjustable, high Sidelobe Suppression ratio simultaneously, placed high hopes by people.The basic principle block diagram of this filter as shown in Figure 1a.In this structure, have many uniformly-spaced the frequency comb source 101 of frequency component directly enter modulator 102 and carry out single-side band modulation, modulation signal is signal to be filtered.Entering into a dispersive medium 103 through the frequency comb source behind the single-side band modulation is received by photodetector 104 then.Because different delays can appear in the transmission of different light frequency components in dispersive medium, so when arriving photodetector, appearances waits delay between the frequency component in the frequency comb source, correspondence the many taps in the transverse filter structure.Each frequency component to frequency comb source is carried out independently amplitude and phase control respectively, can realize the tunable and restructural of filter filtering function.
In this traditional horizontal microwave photon filter based on frequency comb source time-delay tap, because its output light signal comprises multicarrier and corresponding modulation sideband, at spectrum, so the electrical output signal after photoelectricity changes on the electricity spectrum except comprising needed carrier wave and it think beat frequency component between the corresponding modulation sideband,, also comprising other spurious frequency components, mainly is the beat frequency component between beat frequency component, modulation sideband, and the modulation sideband, between beat frequency component, carrier wave and the carrier wave between carrier wave and the non-corresponding modulating sideband.Shown in Fig. 1 b, the different frequency component is represented with synteny not.These spurious frequency components exist the microwave photon filter that makes based on frequency comb source time-delay tap to work in the Nyquist zone of some certain width (Nyquist zone).When the tuning border near Nyquist of filter passband, exist this moment very strong nearly frequency to disturb in the filter output signal, filter can't operate as normal.Therefore, the restriction in Nyquist zone is greatly restricting tuning performance and the practical application thereof based on the horizontal microwave photon filter of frequency comb source time-delay tap.
Summary of the invention
The present invention one of is intended to solve the problems of the technologies described above at least to a certain extent or provides a kind of useful commerce to select at least.For this reason, the objective of the invention is to propose a kind of no clutter interference microwave photon filter based on frequency comb.
The no clutter interference microwave photon filter based on frequency comb according to the embodiment of the invention comprises: frequency comb source, described frequency comb source are used for carrying radiofrequency signal to be filtered, the tap in the corresponding transverse filter structure of wherein each carrier component; Quadratic form Phase Processing unit, described quadratic form Phase Processing unit links to each other with the output of described frequency comb source, and being used for adjusting the whole light phase of frequency comb source is quadratic form; Modulator, described modulator links to each other with the output of described quadratic form Phase Processing unit, is used for radiofrequency signal to be filtered is modulated to each carrier component of frequency comb source; Dispersive medium, described dispersive medium links to each other with the output of described modulator, is used for introducing between each carrier wave of frequency comb source equating time-delay, makes that each carrier wave is regarded as being the tap in the transverse filter structure in the frequency comb source; And photodetector, described photodetector links to each other with the output of described dispersive medium, is used for light signal is converted to the signal of telecommunication, is output as filtered radiofrequency signal.
In one embodiment of the invention, described quadratic form Phase Processing unit is realized by general single mode fiber, dispersion compensating fiber, chirped fiber grating or LCD space light modulator.
In one embodiment of the invention, described frequency comb source realizes by mode-locked laser, perhaps makes up to realize by cascade intensity modulator and phase-modulator.
The no clutter interference microwave photon filter based on frequency comb according to the embodiment of the invention can suppress spurious frequency effectively, and do not influence the characteristic of filter transfer function, the tuning restriction that no longer is subjected to traditional Nyquist zone of passband has advantage simple in structure, applied range.
Additional aspect of the present invention and advantage part in the following description provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment in conjunction with following accompanying drawing, wherein:
Fig. 1 a is that tradition is based on the horizontal microwave photon filter construction block diagram of frequency comb source time-delay tap;
Fig. 1 b is the spurious frequency schematic diagram in the filter output optical signal spectrum shown in Fig. 1 a and the detection signal of telecommunication;
Fig. 2 a is the no clutter interference microwave photon filter construction block diagram based on frequency comb source of the embodiment of the invention;
Fig. 2 b is from the filter transmission curve chart of frequency component between carrier wave sideband and the modulation sideband, beat frequency in the filter shown in Fig. 2 a;
Fig. 2 c is from the filter transmission curve chart of frequency component between carrier wave sideband and the carrier wave sideband beat frequency in the filter shown in Fig. 2 a;
Fig. 3 is the schematic diagram based on the no clutter interference microwave photon filter instantiation of frequency comb source of the embodiment of the invention;
Fig. 4 is conventional filter (a) and the contrast of filter of the present invention (b) on the filter transmission function;
Fig. 5 is conventional filter (a) and the contrast of filter of the present invention (b) on output signal spectrum;
Fig. 6 is spurious frequency component f in the filter of the present invention
S1=9.8-f
RFAnd f
S2=19.6-f
RFThe filter transmission function.
Embodiment
Describe embodiments of the invention below in detail, the example of described embodiment is shown in the drawings, and wherein identical or similar label is represented identical or similar elements or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, be intended to for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that, term " " center "; " vertically "; " laterally "; " length "; " width "; " thickness ", " on ", D score, " preceding ", " back ", " left side ", " right side ", " vertically ", " level ", " top ", " end " " interior ", " outward ", " clockwise ", close the orientation of indications such as " counterclockwise " or position is based on orientation shown in the drawings or position relation, only be that the present invention for convenience of description and simplification are described, rather than device or the element of indication or hint indication must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention.
In addition, term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless clear and definite concrete restriction is arranged in addition.
In the present invention, unless clear and definite regulation and restriction are arranged in addition, broad understanding should be done in terms such as term " installation ", " linking to each other ", " connection ", " fixing ", for example, can be fixedly connected, also can be to removably connect, or connect integratedly; Can be mechanical connection, also can be to be electrically connected; Can be directly to link to each other, also can link to each other indirectly by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand above-mentioned term concrete implication in the present invention as the case may be.
In the present invention, unless clear and definite regulation and restriction are arranged in addition, first feature second feature it " on " or D score can comprise that first and second features directly contact, can comprise that also first and second features are not directly contacts but by the contact of the additional features between them.And, first feature second feature " on ", " top " and " above " comprise first feature directly over second feature and oblique upper, or only represent that the first characteristic level height is higher than second feature.First feature second feature " under ", " below " and " below " comprise first feature under second feature and tiltedly, or only represent that the first characteristic level height is less than second feature.
Based on the microwave photon filter of frequency comb source time-delay tap than other FIR(finite impulse responses) filter, have the ability that realizes many taps, humorous, any restructural of high-speed adjustable, high Sidelobe Suppression ratio simultaneously.In traditional scheme, the output signal of telecommunication comprises many spurious frequency components, makes filter to work in the Nyquist zone of some certain width (" Nyquist zone ").This is greatly restricting tuning performance and the practical application thereof of this filter scheme.
For this reason, the present invention is directed to the spurious frequency interference problem that exists in the microwave photon filter based on frequency comb source time-delay tap, propose a kind of no clutter interference microwave photon filter based on frequency comb first.This filter construction is very simple, by frequency comb source is carried out the quadratic form Phase Processing, realize that the filter transmission function of spurious frequency signal and the filter transmission function (being filter transfer function) of input radio frequency signal are separated, and make the spurious frequency signal obtain very effective inhibition.The tuning restriction that is not subjected to traditional Nyquist zone of the passband of this filter is moved towards practical application with the microwave photon filter that greatly promotes based on frequency comb.
According to the embodiment of the invention based on the microwave photon filter of frequency comb source shown in Fig. 2 a, comprising: frequency comb source 201, frequency comb source 201 is used for carrying radiofrequency signal to be filtered, the tap in the corresponding transverse filter structure of wherein each carrier component; Quadratic form Phase Processing unit 202, quadratic form Phase Processing unit 202 links to each other with the output of frequency comb source 201, and being used for adjusting the whole light phase of frequency comb source is quadratic form; Modulator 203, modulator 203 links to each other with the output of quadratic form Phase Processing unit 202, is used for radiofrequency signal to be filtered is modulated to each carrier component of frequency comb source; Dispersive medium 204, dispersive medium 204 links to each other with the output of modulator 203, is used for introducing between each carrier wave of frequency comb source equating time-delay, makes that each carrier wave is regarded as being the tap in the transverse filter structure in the frequency comb source; And photodetector 205, photodetector 205 links to each other with the output of dispersive medium 204, is used for light signal is converted to the signal of telecommunication, is output as filtered radiofrequency signal.
Wherein, frequency comb source 201 can realize by mode-locked laser, also can realize by the scheme of cascade intensity modulator and phase-modulator.Wherein, the initial phase of each spectral line of frequency comb that mode-locked laser obtains is identical, this frequency comb source is carried out quadratic form Phase Processing 202 for realizing by general single mode fiber, dispersion compensating fiber, chirped fiber grating, also can wait to realize by width of cloth phase control module such as LCD space light modulator.The frequency comb source that cascade intensity modulator and phase-modulator obtain has had the modulation of quadratic form phase place, still can wait to realize the adjustment of quadratic form phase place modulation size this moment by monomode fiber, dispersion compensating fiber, chirped fiber grating, width of cloth phase control module such as LCD space light modulator.
In the horizontal microwave photon filter based on frequency comb source time-delay tap of the present invention, after frequency comb source 201 carried out the quadratic form Phase Processing, can realize that spurious frequency signal suppressing and filter transfer function characteristic are unaffected, basic principle wherein is described below:
In the horizontal many taps microwave photon filter construction based on the frequency comb source after the quadratic form Phase Processing, beat signal correspondence between primary carrier and the corresponding modulation sideband, the radiofrequency signal that is input in the filter, the filter transmission function characteristic (being the filter transmission characteristic) of this signal experience and the phase-independent of frequency comb source namely are not subjected to the influence of quadratic form Phase Processing.It presents periodically response in frequency, and period definition is free spectrum width, satisfies relational expression
Θ wherein
2Be that Δ f is the difference on the frequency between the adjacent spectral line of frequency comb source, shown in Fig. 2 b solid line for the dispersion measure size that realizes the tap time-delay.Beat frequency correspondence between the modulation sideband, of primary carrier and non-correspondence spurious frequency, the filter transmission characteristic of these spurious frequencies and filter transmission characteristic have same periodicity features of response, cycle is identical, but the skew of passband position is different, separate on frequency with filter transfer function, shown in Fig. 2 b dotted line.Side-play amount satisfies relational expression
Φ wherein
2It is the corresponding dispersion measure size of frequency comb unit's quadratic form Phase Processing.Beat frequency correspondence between primary carrier and the primary carrier spurious frequency, the filter transmission characteristic of these spurious frequencies and filter transmission characteristic have same periodicity features of response, but the cycle obtains extending, and also separates on frequency with filter transfer function, shown in Fig. 2 c dotted line.Cycle after the extension is satisfied relational expression
By design Φ
2Size can realize that filter transmission function and the filter transfer function of spurious frequency signal are separated, thereby be implemented in the inhibition of spurious frequency in the filter passband, make the tuning restriction that no longer is subjected to traditional Nyquist zone of passband based on the horizontal microwave photon filter of frequency comb source time-delay tap.
Need to prove, can also further learn from above principle analysis: filter of the present invention is not only applicable to all to be suppressed based on the spurious frequency the horizontal microwave photon filter of frequency comb source time-delay tap, also can further be applicable to based on the spurious frequency in the horizontal microwave photon filter of multi wave length illuminating source time-delay tap and suppress.
For making those skilled in the art understand the present invention better, the applicant exemplarily with the most basic horizontal microwave photon filter construction based on frequency comb source time-delay tap, compares test to traditional filter and filter of the present invention.
Fig. 3 is the schematic diagram based on the microwave photon filter instantiation of frequency comb source of the embodiment of the invention.As shown in Figure 3, adopt mode-locked laser as the identical frequency comb source 301 of initial phase, it is combed frequently and is spaced apart 9.8GHz, this frequency comb source 301 is that the general single mode fiber 304 of 423ps/nm1550nm carries out the quadratic form Phase Processing through entering into dispersion measure behind amplifiers 302, advance then to enter into double-parallel modulator 307 after the Polarization Control 305 and carry out single-side band modulation, behind amplifier 308, enter into dispersion measure again and be the dispersion compensating fiber 310 of-1320ps/nm1550nm, receive and be converted to the signal of telecommunication by photodetector 311 at last.General single mode fiber 304 is removed, and introducing can make up traditional filter scheme with the adjustable attenuator 303 of equal loss's size.Under equal link luminous power situation, traditional scheme and employing filter of the present invention are compared test.Utilize network analyzer 309 to test the filtering characteristic curve of this microwave photon filter, the spurious frequency of utilizing microwave source 306 and spectrum analyzer 312 to test this filter suppresses the result.Be somebody's turn to do in the horizontal microwave photon filter based on frequency comb source time-delay tap, by frequency comb source is carried out the quadratic form Phase Processing, realize that the filter transmission function of spurious frequency signal and the filter transmission function (being filter transfer function) of input radio frequency signal are separated, thereby realize the inhibition of spurious frequency.
Next the transfer function to conventional filter and filter shown in Figure 3 has carried out contrast test, and the result as shown in Figure 4.Can see that when the network analyzer swept frequency range was 0-25GHz, the shape of two filter transfer function was almost consistent.This explanation the present invention does not bring influence to passband position and the passband shapes of former filter transfer function.The border in the very close Nyquist of the passband of two kinds of filter transfer function zone.When the network analyzer swept frequency range is 8.5-11.5GHz, can see, the filter transfer function of traditional scheme very high burr occurs at the 9.8G frequency location, this is because not only comprise the input radio frequency signal of 9.8GHz in the reception signal of network analyzer analysis this moment, also comprises the carrier wave of 9.8GHz and the beat signal between the carrier wave.And by contrast, the burr projection does not appear in filter transfer function of the present invention on 9.8GHz.
Because the operation principle of network analyzer is only to analyze to receive the frequency component consistent with its emission simple signal frequency in the signal, so can not reflect the influence of spurious frequency in the filter in the data that network analyzer obtains comprehensively.Utilize the microwave source injection filter, and utilize spectrum analyzer to measure the influence that spurious frequency that the filter output signal frequency spectrum can intuitively see is brought.Single-frequency microwave signal with 9.68GHz in the experiment is injected into respectively in two kinds of filters.Contrasted the frequency spectrum of the output signal of conventional filter and filter of the present invention among Fig. 5.Can see among Fig. 5 (a), except the single-frequency microwave signal of 9.68GHz, also comprising very strong nearly frequency and disturb, is respectively the 9.92GHz(9.8*2-9.68 of 9.8GHz interference and modulation sideband, and the generation of carrier wave sideband beat frequency of beat frequency generation between carrier wave and the carrier wave) disturb.These two kinds near interference frequently make filter to work.And by contrast, can see among Fig. 5 (b), adopt the frequency spectrum of filter output signal of the present invention then to seem very pure, 9.8GHz and these two kinds near interference frequently of 9.92GHz are suppressed fully, rejection ratio is respectively 73dB and 41dB, and the end of making an uproar in the passband also is suppressed, and rejection ratio reaches 20dB.So filter of the present invention can be worked in traditional Nyquist zone boundary.
Utilize the frequency mixer measurement module in the network analyzer, the filter transmission function of spurious frequency can be measured.Fig. 6 has provided f
S1=9.8-f
RFAndf
S2=19.6-f
RFThe filter transmission function of two kinds of spurious frequencies, comparison diagram can be seen, filter transmission function and the filter transfer function of spurious frequency have identical free spectrum width and similar shapes and, but have different position frequency displacements, the position frequency shift amount is consistent with the theoretical analysis and calculation result.
The microwave photon filter based on frequency comb according to the embodiment of the invention can suppress spurious frequency effectively, and do not influence the characteristic of filter transfer function, the tuning restriction that no longer is subjected to traditional Nyquist zone of passband has advantage simple in structure, applied range.
Describe and to be understood that in the flow chart or in this any process of otherwise describing or method, expression comprises module, fragment or the part of code of the executable instruction of the step that one or more is used to realize specific logical function or process, and the scope of preferred implementation of the present invention comprises other realization, wherein can be not according to order shown or that discuss, comprise according to related function by the mode of basic while or by opposite order, carry out function, this should be understood by the embodiments of the invention person of ordinary skill in the field.
In the description of this specification, concrete feature, structure, material or characteristics that the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means in conjunction with this embodiment or example description are contained at least one embodiment of the present invention or the example.In this manual, the schematic statement to above-mentioned term not necessarily refers to identical embodiment or example.And concrete feature, structure, material or the characteristics of description can be with the suitable manner combination in any one or more embodiment or example.
Although illustrated and described embodiments of the invention above, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment under the situation that does not break away from principle of the present invention and aim within the scope of the invention, modification, replacement and modification.
Claims (3)
1. the no clutter interference microwave photon filter based on frequency comb is characterized in that, comprising:
Frequency comb source, described frequency comb source are used for carrying radiofrequency signal to be filtered, the tap in the corresponding transverse filter structure of wherein each carrier component;
Quadratic form Phase Processing unit, described quadratic form Phase Processing unit links to each other with the output of described frequency comb source, and being used for adjusting the whole light phase of frequency comb source is quadratic form;
Modulator, described modulator links to each other with the output of described quadratic form Phase Processing unit, is used for radiofrequency signal to be filtered is modulated to each carrier component of frequency comb source;
Dispersive medium, described dispersive medium links to each other with the output of described modulator, is used for introducing between each carrier wave of frequency comb source equating time-delay, makes that each carrier wave is regarded as being the tap in the transverse filter structure in the frequency comb source; And
Photodetector, described photodetector links to each other with the output of described dispersive medium, is used for light signal is converted to the signal of telecommunication, is output as filtered radiofrequency signal.
2. the no clutter interference microwave photon filter based on frequency comb as claimed in claim 1, it is characterized in that described quadratic form Phase Processing unit is realized by general single mode fiber, dispersion compensating fiber, chirped fiber grating or LCD space light modulator.
3. the no clutter interference microwave photon filter based on frequency comb as claimed in claim 1 is characterized in that, described frequency comb source realizes by mode-locked laser, perhaps makes up to realize by cascade intensity modulator and phase-modulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310064066.2A CN103259507B (en) | 2013-02-28 | 2013-02-28 | A kind of based on frequency comb without clutter interference microwave photon filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310064066.2A CN103259507B (en) | 2013-02-28 | 2013-02-28 | A kind of based on frequency comb without clutter interference microwave photon filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103259507A true CN103259507A (en) | 2013-08-21 |
| CN103259507B CN103259507B (en) | 2015-07-29 |
Family
ID=48963247
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310064066.2A Active CN103259507B (en) | 2013-02-28 | 2013-02-28 | A kind of based on frequency comb without clutter interference microwave photon filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103259507B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457675A (en) * | 2013-08-30 | 2013-12-18 | 清华大学 | Single-pass-band tunable microwave photon filter based on broad band light source |
| CN103454783A (en) * | 2013-09-13 | 2013-12-18 | 天津理工大学 | Microwave photon band-pass filter based on cascaded chromatic dispersion devices |
| CN103712689A (en) * | 2014-01-02 | 2014-04-09 | 上海朗研光电科技有限公司 | Continuous laser device spectral line width measurement device based on optical frequency comb |
| CN104486004A (en) * | 2014-12-18 | 2015-04-01 | 北京航空航天大学 | Ultra-wideband receiver device based on microwave photonics and realizing method thereof |
| CN104597686A (en) * | 2015-01-21 | 2015-05-06 | 清华大学 | Microwave photon concatenation system |
| CN106877932A (en) * | 2016-11-04 | 2017-06-20 | 西安电子科技大学 | The optical fiber transmission method of broadband signal is realized using phase-modulator |
| CN107659361A (en) * | 2017-11-06 | 2018-02-02 | 北京邮电大学 | A kind of microwave signal process system and method |
| CN105785687B (en) * | 2016-05-13 | 2018-07-17 | 吉林大学 | A kind of dual-passband microwave photon filter of high form factor for WLAN |
| CN111901042A (en) * | 2020-08-11 | 2020-11-06 | 中国电子科技集团公司第四十四研究所 | Phase modulation-based large dynamic signal demodulation model method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412687B (en) * | 2018-11-09 | 2020-06-16 | 浙江大学 | Optical path time delay rapid measurement device based on frequency domain standing wave method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508231A (en) * | 2011-10-28 | 2012-06-20 | 清华大学 | Fabry-Perot interference absolute distance measurement method based on femtosecond optical frequency comb and device thereof |
| CN102520487A (en) * | 2011-12-15 | 2012-06-27 | 北京交通大学 | Flat microwave photonic filter based on Mach-Zehnder modulator and frequency converter |
-
2013
- 2013-02-28 CN CN201310064066.2A patent/CN103259507B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508231A (en) * | 2011-10-28 | 2012-06-20 | 清华大学 | Fabry-Perot interference absolute distance measurement method based on femtosecond optical frequency comb and device thereof |
| CN102520487A (en) * | 2011-12-15 | 2012-06-27 | 北京交通大学 | Flat microwave photonic filter based on Mach-Zehnder modulator and frequency converter |
Non-Patent Citations (2)
| Title |
|---|
| EHSAN HAMIDI等: "Tunable Programmable Microwave Photonic Filters based on optical frequency comb", 《IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES》, 30 November 2010 (2010-11-30), pages 33269 - 3278 * |
| V.TORRES-COMPANY等: "Optical frequency comb shaping for simultaneous complex multi-tap microwave photonic filtering and downconversion sampling", 《MICROWAVE PHOTONICS(MWP),2012 INTERNATIONAL TOPICAL MEETING ON》, 14 September 2012 (2012-09-14) * |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103457675A (en) * | 2013-08-30 | 2013-12-18 | 清华大学 | Single-pass-band tunable microwave photon filter based on broad band light source |
| CN103457675B (en) * | 2013-08-30 | 2016-01-20 | 清华大学 | Based on the single-pass band tunable microwave photon filter of wide spectrum light source |
| CN103454783A (en) * | 2013-09-13 | 2013-12-18 | 天津理工大学 | Microwave photon band-pass filter based on cascaded chromatic dispersion devices |
| CN103712689B (en) * | 2014-01-02 | 2015-07-01 | 上海朗研光电科技有限公司 | Continuous laser device spectral line width measurement device based on optical frequency comb |
| CN103712689A (en) * | 2014-01-02 | 2014-04-09 | 上海朗研光电科技有限公司 | Continuous laser device spectral line width measurement device based on optical frequency comb |
| CN104486004A (en) * | 2014-12-18 | 2015-04-01 | 北京航空航天大学 | Ultra-wideband receiver device based on microwave photonics and realizing method thereof |
| CN104486004B (en) * | 2014-12-18 | 2017-09-01 | 北京航空航天大学 | Ultra wideband receiver device and implementation method based on microwave photon |
| CN104597686A (en) * | 2015-01-21 | 2015-05-06 | 清华大学 | Microwave photon concatenation system |
| CN104597686B (en) * | 2015-01-21 | 2018-04-10 | 清华大学 | microwave photon cascade system |
| CN105785687B (en) * | 2016-05-13 | 2018-07-17 | 吉林大学 | A kind of dual-passband microwave photon filter of high form factor for WLAN |
| CN106877932A (en) * | 2016-11-04 | 2017-06-20 | 西安电子科技大学 | The optical fiber transmission method of broadband signal is realized using phase-modulator |
| CN107659361A (en) * | 2017-11-06 | 2018-02-02 | 北京邮电大学 | A kind of microwave signal process system and method |
| CN107659361B (en) * | 2017-11-06 | 2019-10-15 | 北京邮电大学 | A kind of microwave signal process system and method |
| CN111901042A (en) * | 2020-08-11 | 2020-11-06 | 中国电子科技集团公司第四十四研究所 | Phase modulation-based large dynamic signal demodulation model method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103259507B (en) | 2015-07-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103259507A (en) | Microwave photonic filter free of spurious interference based on optical frequency comb | |
| Li et al. | A narrow-passband and frequency-tunable microwave photonic filter based on phase-modulation to intensity-modulation conversion using a phase-shifted fiber Bragg grating | |
| CN102163795B (en) | Optoelectronic oscillator with tunable broadband frequency | |
| CN103166706B (en) | Based on the photoelectric oscillation device of the frequency-tunable of wide spectrum light source | |
| CN110233676B (en) | Radio frequency channelization method based on optical comb double modulation sidebands and implementation device | |
| US9753349B2 (en) | Optical circuit apparatus, method, and application | |
| CN103957058B (en) | The device of triangle microwave signal is produced based on Dual Drive Mach zehnder modulators | |
| CN101587145B (en) | Photon technical multi-microwave frequency component measurement scheme by using incoherent light source | |
| Yi et al. | Dispersion induced RF distortion of spectrum-sliced microwave-photonic filters | |
| CN102751644A (en) | Wideband continuously tunable photoelectric oscillator based on excited Brillouin scattering effect | |
| CN107659361A (en) | A kind of microwave signal process system and method | |
| Mora et al. | Single-bandpass microwave photonic filter with tuning and reconfiguration capabilities | |
| CN104749798A (en) | High-speed tunable microwave photon filter | |
| Song et al. | Optical single-sideband modulation based on silicon-on-insulator coupled-resonator optical waveguides | |
| CN111736368A (en) | Reconfigurable microwave photon filter based on fiber grating | |
| CN106154685A (en) | Continuously adjustable band based on four-wave mixing leads to microwave photon filter | |
| Zhang et al. | A microwave frequency measurement system based on Si3N4 ring-assisted Mach-Zehnder interferometer | |
| Chan et al. | Photonic notch filter without optical coherence limitations | |
| CN106154590A (en) | Continuously adjustable trap microwave photon filter based on four-wave mixing | |
| CN111948837A (en) | Microwave photon filtering method and microwave photon filtering device | |
| CN104639258A (en) | Parameter multicast photon channelized radio-frequency receiver | |
| Ning et al. | Tunable photonic microwave bandpass filter using phase modulation and a chirped fiber grating in a Sagnac loop | |
| Marpaung et al. | Design and realization of an integrated optical frequency modulation discriminator for a high performance microwave photonic link | |
| Girish et al. | Low-power, reconfigurable Brillouin RF photonic bandstop filters | |
| Bolea et al. | Highly chirped reconfigurable microwave photonic filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |