CN104600547A - Phase polarization dynamic modulation based wide-range tunable frequency multiplication type photoelectric oscillator - Google Patents
Phase polarization dynamic modulation based wide-range tunable frequency multiplication type photoelectric oscillator Download PDFInfo
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- CN104600547A CN104600547A CN201510032608.7A CN201510032608A CN104600547A CN 104600547 A CN104600547 A CN 104600547A CN 201510032608 A CN201510032608 A CN 201510032608A CN 104600547 A CN104600547 A CN 104600547A
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Abstract
A phase polarization dynamic modulation based wide-range tunable frequency multiplication type photoelectric oscillator comprises a wavelength tunable frequency semiconductor laser source, a light polarization rotator, a lithium niobate light phase modulator, a polarized light keeping coupler, a second polarizer, a tunable light band-pass filter, a single mode fiber, a second photoelectric detector, a microwave amplifier and an electric beam splitter which are sequentially and cyclically connected, wherein the polarized light keeping coupler is sequentially connected with a light polarization control device, a first polarizer and a first photoelectric detector. The problem that a traditional frequency multiplication photoelectric oscillator is high in complexity and difficult to tune in a large-scale mode can be solved.
Description
Technical field
The invention belongs to microwave photonics field, is a kind of tunable on a large scale frequency multiplier type optical-electronic oscillator based on phase place polarization dynamic modulation in particular.
Background technology
Optical-electronic oscillator be a kind of can at the microwave oscillator of microwave and millimeter wave band operation.Compared with traditional microwave oscillator, the microwave signal that such oscillator exports has extremely low phase noise.Therefore, among the radio frequency photon systems such as it is widely used in as distributed radar, optical communication transmission.For typical optical-electronic oscillator, the microwave signal of higher frequency exports often to be limited in its oscillation rings and comprises modulator, microwave amplifier, arrowband electrical filter, the operation bandwidth of multiple opto-electronic device such as photodetector.In order under the prerequisite do not raised the cost, improve the running frequency of optical-electronic oscillator, a series of frequency multiplication photoelectric oscillator is suggested and proves.This kind of frequency-multiplication oscillator not only increases Clock Extraction and the modulation format conversion that running frequency also can be applicable to optical communication.But because the extra photoelectron element of too much introducing is in oscillation rings, the drift of the frequency multiplication photoelectric oscillator of having reported for work to polarization state and polarization voltage is very responsive, and stability is had a greatly reduced quality.In addition owing to lacking arrowband electrical filter that is tunable and covering 30GHz on a large scale, the tuning range of optical-electronic oscillator is restricted.Based on above-mentioned factor, optical-electronic oscillator is difficult to play in the huge applications potentiality in each field.
In sum, in order to solve the above-mentioned technical bottleneck faced, at present in the urgent need to one tunable frequency multiplier type optical-electronic oscillator on a large scale.
Summary of the invention
The object of the invention is to, provide a kind of tunable frequency multiplier type optical-electronic oscillator based on phase place polarization dynamic modulation on a large scale, it is high and be difficult to tuning problem on a large scale that it can solve traditional frequency multiplication photoelectric oscillator complexity.
The invention provides a kind of tunable frequency multiplier type optical-electronic oscillator based on phase place polarization dynamic modulation on a large scale, comprising:
One tunable wavelength semiconductor LASER Light Source;
One light polarization circulator, its one end is connected with the output of semiconductor laser light resource;
One lithium niobate optical phase modulator, its light input end mouth 1 is connected with the other end of light polarization circulator;
One protects polarisation coupler, and its port one is connected with the light output mouth 2 of lithium niobate optical phase modulator;
One light polarization control device, input is connected with the port 3 protecting polarisation coupler;
One first polarizer, its input is connected with the output of light polarization control device;
One first photodetector, its optical input 1 is connected with the output of first polarizer, and the port 2 of this first photodetector is electric output;
One second polarizer, its input is connected with the port 2 protecting polarisation coupler;
One tunable optical band pass filter, its input is connected with the output of second polarizer;
One monomode fiber, its one end is connected with the output of tunable optical band pass filter;
One second photodetector, its light input end mouth 1 is connected with the other end of monomode fiber;
One microwave amplifier, its input is connected with the electric output port 2 of the second photodetector;
One electric beam splitter, its input port 1 is connected with the output of microwave amplifier, and its output port 2 is connected with the electrical input mouth 3 of lithium niobate optical phase modulator, and the port 3 of this electric beam splitter is the microwave delivery outlet of this optical-electronic oscillator.
As can be seen from technique scheme, the present invention has following beneficial effect:
Existing optical-electronic oscillator should can be solved on a large scale high and be difficult to tuning problem on a large scale based on the tunable frequency multiplier type optical-electronic oscillator of phase place and polarization dynamic modulation.
Accompanying drawing explanation
In order to further illustrate structure of the present invention and feature, below in conjunction with example and accompanying drawing, the present invention is described further, wherein:
Fig. 1 is the tunable on a large scale frequency multiplier type optical-electronic oscillator structural representation based on phase place and polarization dynamic modulation.
Embodiment
Refer to shown in Fig. 1, the invention provides a kind of tunable frequency multiplier type optical-electronic oscillator based on phase place polarization dynamic modulation on a large scale, comprising:
One tunable wavelength semiconductor LASER Light Source a, for providing laser beam, the frequency of this light beam is v0;
One light polarization circulator b, its one end is connected with the output of semiconductor laser light resource a;
One lithium niobate optical phase modulator c, its light input end mouth 1 is connected with the other end of light polarization circulator b, light polarization circulator b is for controlling the polarization direction of the laser exported by semiconductor laser light resource a, make the main shaft in the polarization direction of laser and lithium niobate optical phase modulator c end face, namely X-axle is at 45 °; This laser is projected as X-axle light component X-is axial, with X-axle direction in 90 ° is projected as Y-axle light component; Due to the polarization dependent behavior of lithium niobate optical phase modulator c, the microwave signal that X-axle light component is F by the frequency that the electric input port 3 by lithium niobate optical phase modulator c enters is modulated, Y-axle light component then can not be modulated by this microwave signal, therefore existing, is with light frequency v by the spectrum of the X-axle light component of the laser beam of the output of the light output mouth 2 of mach zhender electrooptic modulator c
0centered by the spectrum of phase-modulation, Y-axle light component is for only to comprise a light frequency composition v
0spectrum;
One protects polarisation coupler d, and its port one is connected with the light output mouth 2 of lithium niobate optical phase modulator c, and laser is divided into two bundles by this guarantor's polarisation coupler d, and light beam one exports from the port 2 protecting polarisation coupler d, and light beam two exports from the port 3 protecting polarisation coupler;
One light polarization control device e, output is connected, for controlling the polarization state of light beam one with the port 3 protecting polarisation coupler d;
One first polarizer f, its one end is connected with the output of light polarization control device e; Light polarization control device e, for controlling the polarization state of light beam one, ensure that differing between its X-axle light component with Y-axle light component is π, and the main shaft angle of X-axle light component and the first polarizer f is 45 °
One first photodetector g, its optical input is connected with the delivery outlet of the first polarizer f; For receiving the light beam one exported by the first polarizer f, its electric delivery outlet 2 is for exporting the microwave signal of frequency multiplication, and the frequency of this microwave signal is 2F, for application;
One second polarizer h, its input is connected with the port 2 protecting polarisation coupler d, and the main shaft of this second polarizer e is 0 ° with the slow axis angle of guarantor's polarisation coupler d, for guaranteeing the X-axle light component leached in light beam two;
One tunable optical band pass filter i, its input port is connected with the delivery outlet of the second polarizer h, for occuping light frequency v in filtering X-axle light component
0the spectral component on left side or right side, retains and comprises light frequency v
0at interior v
0the spectral component in right side or left side;
One monomode fiber j, its one end is connected with the output of tunable optical band pass filter i, for realizing the energy storage to light beam two;
One second photodetector k, its light input end mouth 1 is connected with the other end of monomode fiber h, and for light beam two is converted to microwave signal, the frequency content of the microwave signal changed is F;
One microwave amplifier 1, its input is connected the microwave signal for amplifying conversion with the electric output port 2 of the second photodetector k;
One electric beam splitter m, its input port 1 is connected with the output of microwave amplifier 1, and output port 2 is connected with the electrical input mouth 3 of lithium niobate optical phase modulator c; For being that the microwave composition of F is divided into two bundles, microwave beam one and microwave beam two by frequency; Microwave beam one exports the laser beam for modulating through lithium niobate optical phase modulator c from the output port 2 of electric beam splitter 1, and microwave beam two exports, for application from the output port 3 of electric beam splitter 1;
The light frequency v of adjusting wavelength tunable semiconductor LASER Light Source a Output of laser
0, make light frequency v
0near or the edge placement of transmission spectrum response band away from tunable optical band pass filter i, and ensure light frequency component v
0all the time fall into the transmission spectrum band internal of tunable optical band pass filter i, realize microwave frequency that this optical-electronic oscillator exports reduce or raise tuning, namely export the change of microwave frequency value F large or diminish;
Regulate the response band edge of tunable optical band pass filter i, make the light frequency v of adjusting wavelength tunable semiconductor LASER Light Source a Output of laser
0near or the edge placement of transmission spectrum response band away from tunable optical band pass filter i, and ensure light frequency v
0all the time fall into the transmission spectrum band internal of tunable optical band pass filter i, realize microwave frequency tuning that this optical-electronic oscillator exports, namely export the change of microwave frequency value F large or diminish; The inverse of the wavelength resolution of tunable optical band pass filter i corresponds to the minimum value of the output microwave frequency F of this optical-electronic oscillator.
Above-described specific embodiment; object of the present invention, technical scheme and beneficial effect have been described in detail; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1., based on a tunable on a large scale frequency multiplier type optical-electronic oscillator for phase place polarization dynamic modulation, comprising:
One tunable wavelength semiconductor LASER Light Source;
One light polarization circulator, its one end is connected with the output of semiconductor laser light resource;
One lithium niobate optical phase modulator, its light input end mouth 1 is connected with the other end of light polarization circulator;
One protects polarisation coupler, and its port one is connected with the light output mouth 2 of lithium niobate optical phase modulator;
One light polarization control device, input is connected with the port 3 protecting polarisation coupler;
One first polarizer, its input is connected with the output of light polarization control device;
One first photodetector, its optical input 1 is connected with the output of first polarizer, and the port 2 of this first photodetector is electric output;
One second polarizer, its input is connected with the port 2 protecting polarisation coupler;
One tunable optical band pass filter, its input is connected with the output of second polarizer;
One monomode fiber, its one end is connected with the output of tunable optical band pass filter;
One second photodetector, its light input end mouth 1 is connected with the other end of monomode fiber;
One microwave amplifier, its input is connected with the electric output port 2 of the second photodetector;
One electric beam splitter, its input port 1 is connected with the output of microwave amplifier, and its output port 2 is connected with the electrical input mouth 3 of lithium niobate optical phase modulator, and the port 3 of this electric beam splitter is the microwave delivery outlet of this optical-electronic oscillator.
2. the tunable on a large scale frequency multiplier type optical-electronic oscillator based on phase place polarization dynamic modulation according to claim 1, wherein light polarization circulator is for controlling the polarization direction of the laser exported by semiconductor laser light resource, make the main shaft in the polarization direction of laser and lithium niobate optical phase modulator end face, namely X-axle, at 45 °.
3. the tunable on a large scale frequency multiplier type optical-electronic oscillator based on phase place polarization dynamic modulation according to claim 1, wherein light polarization control device is for controlling the polarization state of light beam one, ensure that differing between its X-axle light component with Y-axle light component is π, and the main shaft angle of X-axle light component and first polarizer is 45 °.
4. the tunable on a large scale frequency multiplier type optical-electronic oscillator based on phase place polarization dynamic modulation according to claim 1, wherein tunable optical band pass filter is used for occuping the side of light frequency or the spectral component of opposite side in filtering X-axle light component, retains and comprises the side of light frequency or the spectral component of opposite side.
5. the tunable on a large scale frequency multiplier type optical-electronic oscillator based on phase place polarization dynamic modulation according to claim 4, the wherein response band edge of tuning tunable optical band pass filter, make the light frequency of adjusting wavelength tunable semiconductor LASER Light Source Output of laser near or the edge placement of transmission spectrum response band away from tunable optical band pass filter, and ensure that light frequency falls into the transmission spectrum band internal of tunable optical band pass filter all the time, realize the tuning of the microwave frequency of this optical-electronic oscillator output.
6. the tunable on a large scale frequency multiplier type optical-electronic oscillator based on phase place polarization dynamic modulation according to claim 1, the wherein light frequency of adjusting wavelength tunable semiconductor LASER Light Source Output of laser, make light frequency near or the edge placement of transmission spectrum response band away from tunable optical band pass filter, and ensure that light frequency component falls into the transmission spectrum band internal of tunable optical band pass filter all the time, realize the microwave frequency reduction of this optical-electronic oscillator output or the tuning of rising.
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| CN201510032608.7A CN104600547A (en) | 2015-01-22 | 2015-01-22 | Phase polarization dynamic modulation based wide-range tunable frequency multiplication type photoelectric oscillator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374324A (en) * | 2016-11-28 | 2017-02-01 | 中国科学院半导体研究所 | Tunable frequency-doubled photoelectric oscillator system based on polarization modulator |
| CN109039476A (en) * | 2018-07-26 | 2018-12-18 | 中国科学院半导体研究所 | Vector microwave signal generation system based on optical-electronic oscillator |
| CN109861645A (en) * | 2019-01-04 | 2019-06-07 | 武汉邮电科学研究院有限公司 | A kind of frequency multiplier for microwave broadband communication |
Citations (2)
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| CN102163795A (en) * | 2011-03-15 | 2011-08-24 | 中国科学院半导体研究所 | Optoelectronic oscillator with tunable broadband frequency |
| CN102403644A (en) * | 2011-06-30 | 2012-04-04 | 南京航空航天大学 | Photonic high order frequency doubling optoelectronic oscillator |
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2015
- 2015-01-22 CN CN201510032608.7A patent/CN104600547A/en active Pending
Patent Citations (2)
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| CN102163795A (en) * | 2011-03-15 | 2011-08-24 | 中国科学院半导体研究所 | Optoelectronic oscillator with tunable broadband frequency |
| CN102403644A (en) * | 2011-06-30 | 2012-04-04 | 南京航空航天大学 | Photonic high order frequency doubling optoelectronic oscillator |
Non-Patent Citations (2)
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| JIANYU ZHENG等: "Photonic microwave-signal-mixing technique using phase-coherent orthogonal optical carriers for radio-over-fiber application", 《OPTICS LETTERS》 * |
| SHILONG PAN等: "Optical Clock Recovery Using a Polarization-Modulator-Based Frequency-Doubling Optoelectronic Oscillator", 《JOURNAL OF LIGHTWAVE TECHNOLOGY》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374324A (en) * | 2016-11-28 | 2017-02-01 | 中国科学院半导体研究所 | Tunable frequency-doubled photoelectric oscillator system based on polarization modulator |
| CN109039476A (en) * | 2018-07-26 | 2018-12-18 | 中国科学院半导体研究所 | Vector microwave signal generation system based on optical-electronic oscillator |
| CN109861645A (en) * | 2019-01-04 | 2019-06-07 | 武汉邮电科学研究院有限公司 | A kind of frequency multiplier for microwave broadband communication |
| CN109861645B (en) * | 2019-01-04 | 2024-02-13 | 武汉邮电科学研究院有限公司 | Frequency multiplier for microwave broadband communication |
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