CN203631957U - Double-loop photoelectric oscillator with reciprocated optical path - Google Patents
Double-loop photoelectric oscillator with reciprocated optical path Download PDFInfo
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- CN203631957U CN203631957U CN201320852246.2U CN201320852246U CN203631957U CN 203631957 U CN203631957 U CN 203631957U CN 201320852246 U CN201320852246 U CN 201320852246U CN 203631957 U CN203631957 U CN 203631957U
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Abstract
The utility model discloses a double-loop photoelectric oscillator with a reciprocated optical path. The double-loop photoelectric oscillator is characterized in that: the output end of a laser (1) is connected with a first port (2a) of a three-port optical circulator; a second port (2b) of the three-port optical circulator is connected with the input end of a polarization controller A (3); the other end of the polarization controller A (3) is connected with an electrooptical modulator (4); the electrooptical modulator (4) is connected with the input end of a polarization controller B (5); the other end of the polarization controller B (5) is connected with an optical amplifier (6); the optical amplifier (6) is connected with an optical reflector (7); a third port (2c) of the three-port optical circulator is connected with the input end of an electrooptical detector (8); the output end of the electrooptical detector (8) is connected with the input end of an electric filter (9); the output end of the electric filter (9) is connected with a first port (10a) of an electric coupler; a second port (10b) of the electric coupler is connected with the input end of an electric amplifier (11); the output end of the electric coupler (11) is connected with the electrooptical modulator (4); and a third port (10c) of the electric coupler is used as an output end. The double-loop photoelectric oscillator has functions of: improving time-delay utilization rate of an optical fiber in the loop, reducing cost and volume of the system, simplifying control parameters, and improving practicability of an OEO.
Description
Technical field
The utility model relates to microwave photon technical field, relates in particular to a kind of optical-electronic oscillator.
Background technology
Optical-electronic oscillator (OEO) can produce the optical, electrical microwave signal of high-quality, but the subject matter that OEO system exists is that signal is high
contradiction between value and limit mould suppress.As everyone knows, for OEO system, oscillator
value is kept the Time dependent of vibration in loop by energy, therefore want the microwave signal of OEO energy outputting high quality, need in OEO, build sufficiently long loop.Meanwhile, the length of resonant cavity has also determined the frequency interval between starting of oscillation pattern in chamber
, can find out that resonant cavity is longer, mode spacing is just less.Therefore,, in the situation of long chamber, be difficult to guarantee the single longitudinal mode output of OEO.
Existing solution can be divided into following a few class substantially:
The one, whispering gallery filter patterns, it is to utilize the vibration of light field in small medium bead (dish) to complete frequency to select, but this scheme insertion loss is excessive, and tunability is poor, has limited to a certain extent the range of application of OEO.
The 2nd, many loop structures, many loop structures comprise again following several
1, the dicyclo OEO structure that photoelectricity mixes, it utilizes the long common modeling of two different cavity, but this scheme has been used two cover photoelectric conversion devices, has increased the noise of system, has also increased system cost simultaneously.
2, the optical-electronic oscillator of light territory coupling double loop structure, this scheme needs the polarization state of two-way light field in careful control chamber, uses underaction.
3, (DIL-OEO) scheme of two OEO injection lockings, it needs the complete OEO of two covers mutually to inject, and has greatly increased the cost of system.
Summary of the invention
The purpose of this utility model be to overcome above-mentioned shortcoming and provide a kind ofly improved the fiber delay time utilance in loop, reduced cost and the volume of system, simplified control parameter, promoted the round double loop optical-electronic oscillator of light path of the practicality of OEO.
The utility model solves its technical problem underlying and realizes by the following technical solutions:
The double loop optical-electronic oscillator that light path of the present utility model is round, comprise laser, three port optical annular device A, Polarization Controller A, electrooptic modulator, Polarization Controller B, image intensifer, reflective optical system, photodetector, electrical filter, electric coupling, electric amplifier, wherein: the output of laser is connected with three port photocirculator A ports one, three ports light rings A ports two are connected with the input of Polarization Controller A, the other end electrooptic modulator of Polarization Controller A connects, electrooptic modulator is connected with the input of Polarization Controller B, the other end of Polarization Controller B is connected with image intensifer, image intensifer connects reflective optical system, three port photocirculator A ports three are connected with the input of photodetector, photodetector output is connected with electrical filter input, electrical filter output is connected with electric coupling port one, electric coupling port two is connected with the input of electric amplifier, the output of electric amplifier connects electrooptic modulator, electric coupling port three is as output.
The double loop optical-electronic oscillator that above-mentioned light path is round, wherein: described laser adopts semiconductor DFB.
The double loop optical-electronic oscillator that above-mentioned light path is round, wherein: electrooptic modulator adopts Mach-Zehnder modulators (MZM) or phase-modulator.
The double loop optical-electronic oscillator that above-mentioned light path is round, wherein: reflective optical system is the three port circulator B that are made up of three ports light rings B port one, three ports light rings B port two, three ports light rings B ports three, three ports light rings B ports three are connected with three ports light rings B ports one, and image intensifer is connected with three port circulator B ports two.
The double loop optical-electronic oscillator that above-mentioned light path is round, wherein: reflective optical system adopts the speculum of fiber end face plated film.
The utility model compared with prior art, has obvious beneficial effect, and as can be known from the above technical solutions: the modulation for the second time in OEO oscillatory process of the present utility model is equivalent to a phase demodulation process, the two paths of signals that participates in differentiating is respectively time delay
with
(
: be placed in the fiber lengths between Polarization Controller B and image intensifer;
: be placed in the fiber lengths between port three and the photodetector of three port photocirculator A; Be time-lag action) oscillator signal.When meeting chamber length simultaneously, signal is respectively
with
two phase conditions that loop determines, signal could form stable vibration always keeping, and therefore this structural equivalents is in the double loop OEO in a light territory, and using
with
under length of fibre condition, obtain length and be
with
two long chambeies.This light path comes and goes the double loop OEO modulating does not increase the use of active device, in reducing use fiber lengths, light signal comes and goes twice by feeding back modulation after electrooptic modulator again, to form the long optical loop of two different rings, improve the fiber delay time utilance in loop, reduce cost and the volume of system, simplified control parameter, promoted the practicality of OEO.
accompanying drawing explanation
Fig. 1 is the structural representation of the round double loop optical-electronic oscillator of the utility model light path;
Fig. 2 is the structural representation of the utility model embodiment 1;
Fig. 3 is the structural representation of the utility model embodiment 2;
Mark in figure:
1, laser; 2, three port photocirculator A; 2a, three ports light rings A ports one; 2b, three ports light rings A ports two; 2c, three ports light rings A ports three; 3, Polarization Controller A; 4, electrooptic modulator; 5, Polarization Controller B; 6, image intensifer; 7, reflective optical system; 8, photodetector; 9, electrical filter; 10, electric coupling; 10a, electric coupling port one; 10b, electric coupling port two; 10c, electric coupling port three; 11, electric amplifier; 12, three port photocirculator B; 12a, three ports light rings B ports one; 12b, three ports light rings B ports two; 12c, three ports light rings B ports three;
embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to embodiment, structure, feature and effect thereof of the round double loop optical-electronic oscillator of the light path according to the utility model proposes, be described in detail as follows:
embodiment 1:
With reference to Fig. 1, 2, the double loop optical-electronic oscillator that light path is round, comprises laser 1, three port optical annular device A2, Polarization Controller A3, electrooptic modulator 4, Polarization Controller B5, image intensifer 6, reflective optical system 7, photodetector 8, electrical filter 9, electric coupling 10, electric amplifier 11, wherein: the output of laser 1 is connected with three port photocirculator A port one 2a, three ports light rings A port two 2b are connected with the input of Polarization Controller A3, the other end electrooptic modulator 4 of Polarization Controller A3 connects, electrooptic modulator 4 is connected with the input of Polarization Controller B5, the other end of Polarization Controller B5 is connected with image intensifer 6, image intensifer 6 connects reflective optical system 7, three port photocirculator A port three 2c are connected with the input of photodetector 8, photodetector 8 outputs are connected with electrical filter 9 inputs, electrical filter 9 outputs are connected with electric coupling port one 10a, electric coupling port two 10b are connected with the input of electric amplifier 11, the output of electric amplifier 11 connects electrooptic modulator 4, and electric coupling port three 10c are as output,
Described laser 1 adopts semiconductor DFB; Electrooptic modulator 4 adopts Mach-Zehnder modulators (MZM); The three port circulator B12 that reflective optical system 7 is made up of three ports light rings B port one 12a, three ports light rings B port two 12b, three ports light rings B port three 12c, three ports light rings B port three 12c are connected with three ports light rings B port one 12a, and image intensifer 6 is connected with three port circulator B port two 12b.
Operation principle: the light that semiconductor DFB 1 is sent out enters Polarization Controller A3 input from three port photocirculator A port two 2b after three port photocirculator A port one 2a, Polarization Controller A3 regulates the polarization state of light field to reach best rear output and is connected to electrooptic modulator 4(Mach-Zehnder modulators), from electrooptic modulator 4(Mach-Zehnder modulators) light of output is through Polarization Controller B5, be amplified into three port photocirculator B port two 12b through image intensifer 6, enter optical circulator B port one 12a from three port photocirculator B port three 12c outputs, from three port photocirculator B port two 12b outputs, enter again Polarization Controller B5, after Polarization Controller B5 regulates light field polarization state, again pass through electrooptic modulator 4(Mach-Zehnder modulators) and enter three port photocirculator A port two 2b through Polarization Controller A3, from three port photocirculator A port three 2c outputs, be converted to the signal of telecommunication through photodetector 8, and after electrical filter 9 filtering, be connected to electric coupling port one 10a, signal after conversion is electrically coupled device 10 and is divided into two parts, a part enters electric amplifier 11 by electric coupling port two 10b, after amplifying, electric amplifier 11 feeds back to electrooptic modulator 4, another part is exported through electric coupling port three 10c as output signal.The light path of structure can be found out thus, and the modulation for the second time in OEO oscillatory process is equivalent to a phase demodulation process, and the two paths of signals that participates in differentiating is respectively time delay
with
(
: be placed in the fiber lengths between Polarization Controller B5 and image intensifer 6;
: be placed in the fiber lengths between three port photocirculator A port three 2c and photodetector 8; Be time-lag action) oscillator signal.When should meeting chamber length simultaneously, signal is respectively
with
two phase conditions that loop determines, signal could form stable vibration always keeping, and therefore this structural equivalents is in the double loop OEO in a light territory, and using
with
under length of fibre condition, obtain length and be
with
two long chambeies.
With reference to Fig. 1, 3, the double loop optical-electronic oscillator that light path is round, comprises laser 1, three port optical annular device A2, Polarization Controller A3, electrooptic modulator 4, Polarization Controller B5, image intensifer 6, reflective optical system 7, photodetector 8, electrical filter 9, electric coupling 10, electric amplifier 11, wherein: the output of laser 1 is connected with three port photocirculator A port one 2a, three ports light rings A port two 2b are connected with the input of Polarization Controller A3, the other end electrooptic modulator 4 of Polarization Controller A3 connects, electrooptic modulator 4 is connected with the input of Polarization Controller B5, the other end of Polarization Controller B5 is connected with image intensifer 6, image intensifer 6 connects reflective optical system 7, three port photocirculator A port three 2c are connected with the input of photodetector 8, photodetector 8 outputs are connected with electrical filter 9 inputs, electrical filter 9 outputs are connected with electric coupling port one 10a, electric coupling port two 10b are connected with the input of electric amplifier 11, the output of electric amplifier 11 connects electrooptic modulator 4, and electric coupling port three 10c are as output,
Wherein laser (1) adopts semiconductor DFB, and electrooptic modulator (4) adopts phase-modulator, and reflective optical system (7) adopts the speculum of fiber end face plated film.
Operation principle: the light of image intensifer (6) output is got back to Polarization Controller B(5 through image intensifer (6) after being reflected mirror (7) reflection), remainder operation principle is identical with embodiment 1.
Described in the utility modelly be not limited to the embodiment described in embodiment, those skilled in the art draw other execution mode according to the technical solution of the utility model, belong to equally technological innovation scope of the present utility model.Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to comprise these changes and modification interior.
Claims (6)
1. the round double loop optical-electronic oscillator of light path, comprises laser (1), three port optical annular device A(2), Polarization Controller A(3), electrooptic modulator (4), Polarization Controller B(5), image intensifer (6), reflective optical system (7), photodetector (8), electrical filter (9), electric coupling (10), electric amplifier (11), is characterized in that: the output of laser (1) is connected with three port photocirculator A ports one (2a), three ports light rings A ports two (2b) and Polarization Controller A(3) input be connected, Polarization Controller A(3) other end electrooptic modulator (4) connect, electrooptic modulator (4) and Polarization Controller B(5) input be connected, Polarization Controller B(5) the other end be connected with image intensifer (6), image intensifer (6) connects reflective optical system (7), three port photocirculator A ports three (2c) are connected with the input of photodetector (8), photodetector (8) output is connected with electrical filter (9) input, electrical filter (9) output is connected with electric coupling port one (10a), electric coupling port two (10b) is connected with the input of electric amplifier (11), the output of electric amplifier (11) connects electrooptic modulator (4), and electric coupling port three (10c) is as output.
2. the round double loop optical-electronic oscillator of light path as claimed in claim 1, is characterized in that: described laser (1) adopts semiconductor DFB.
3. the round double loop optical-electronic oscillator of light path as claimed in claim 1 or 2, is characterized in that: electrooptic modulator (4) adopts Mach-Zehnder modulators.
4. the round double loop optical-electronic oscillator of light path as claimed in claim 1 or 2, is characterized in that: electrooptic modulator (4) adopts phase-modulator.
5. the round double loop optical-electronic oscillator of light path as claimed in claim 3, it is characterized in that: the three port circulator B(12s of reflective optical system (7) for being formed by three ports light rings B ports one (12a), three ports light rings B ports two (12b), three ports light rings B ports three (12c)), three ports light rings B ports three (12c) are connected with three ports light rings B ports one (12a),, image intensifer (6) is connected with three port circulator B port two (12b).
6. the round double loop optical-electronic oscillator of light path as claimed in claim 4, is characterized in that: reflective optical system (7) adopts the speculum of fiber end face plated film.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320852246.2U CN203631957U (en) | 2013-12-23 | 2013-12-23 | Double-loop photoelectric oscillator with reciprocated optical path |
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| CN201320852246.2U CN203631957U (en) | 2013-12-23 | 2013-12-23 | Double-loop photoelectric oscillator with reciprocated optical path |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051933A (en) * | 2014-06-23 | 2014-09-17 | 中国人民解放军理工大学 | Tunable optoelectronic oscillator and method based on electric self-oscillation loop |
| CN104051934A (en) * | 2014-06-23 | 2014-09-17 | 中国人民解放军理工大学 | Optoelectronic oscillator and method based on electrical loop filtering |
| CN104466621A (en) * | 2014-12-29 | 2015-03-25 | 武汉邮电科学研究院 | Optoelectronic oscillator based on germanium modulator |
| WO2016115517A1 (en) * | 2015-01-15 | 2016-07-21 | Raytheon Company | Methods and systems for reducing noise in optoelectronic oscillators |
| CN106921106A (en) * | 2017-04-26 | 2017-07-04 | 中国电子科技集团公司第三十八研究所 | A kind of small-sized Ultra-Low Phase Noise Optical-Electronic Oscillator and its optical microcavity preparation method |
| CN107887783A (en) * | 2017-11-03 | 2018-04-06 | 天津大学 | A kind of photonic sampling system and method based on OEO |
-
2013
- 2013-12-23 CN CN201320852246.2U patent/CN203631957U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051933A (en) * | 2014-06-23 | 2014-09-17 | 中国人民解放军理工大学 | Tunable optoelectronic oscillator and method based on electric self-oscillation loop |
| CN104051934A (en) * | 2014-06-23 | 2014-09-17 | 中国人民解放军理工大学 | Optoelectronic oscillator and method based on electrical loop filtering |
| CN104051934B (en) * | 2014-06-23 | 2017-02-15 | 中国人民解放军理工大学 | Optoelectronic oscillator and method based on electrical loop filtering |
| CN104051933B (en) * | 2014-06-23 | 2017-05-03 | 中国人民解放军理工大学 | Tunable optoelectronic oscillator and method based on electric self-oscillation loop |
| CN104466621A (en) * | 2014-12-29 | 2015-03-25 | 武汉邮电科学研究院 | Optoelectronic oscillator based on germanium modulator |
| CN104466621B (en) * | 2014-12-29 | 2017-06-20 | 武汉邮电科学研究院 | A kind of optical-electronic oscillator based on germanium modulator |
| WO2016115517A1 (en) * | 2015-01-15 | 2016-07-21 | Raytheon Company | Methods and systems for reducing noise in optoelectronic oscillators |
| US9887779B2 (en) | 2015-01-15 | 2018-02-06 | Raytheon Company | Methods and systems for reducing noise in optoelectronic oscillators |
| US10205526B2 (en) | 2015-01-15 | 2019-02-12 | Raytheon Company | Methods and systems for reducing noise in optoelectronic oscillators |
| CN106921106A (en) * | 2017-04-26 | 2017-07-04 | 中国电子科技集团公司第三十八研究所 | A kind of small-sized Ultra-Low Phase Noise Optical-Electronic Oscillator and its optical microcavity preparation method |
| CN107887783A (en) * | 2017-11-03 | 2018-04-06 | 天津大学 | A kind of photonic sampling system and method based on OEO |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140604 Termination date: 20151223 |
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