CN103944641B - High-power fiber laser phased array high-speed information transmitting device capable of being dynamically connected - Google Patents
High-power fiber laser phased array high-speed information transmitting device capable of being dynamically connected Download PDFInfo
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- CN103944641B CN103944641B CN201410160325.6A CN201410160325A CN103944641B CN 103944641 B CN103944641 B CN 103944641B CN 201410160325 A CN201410160325 A CN 201410160325A CN 103944641 B CN103944641 B CN 103944641B
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Abstract
A high-power fiber laser phased array high-speed information transmitting device capable of being dynamically connected is applied to the field of super-remote-distance space communication. To achieve high-speed laser high-power emission and super-remote-distance transmission, a seed source undergoes beam split through a coupler, a beam of light is input into phase controllers as reference light, and the other beam of light undergoes high-speed information modulation; a radio-frequency signal generator and the other beam of light enter an intensity modulator to obtain a high-speed modulation signal, the high-speed modulation signal enters the four phase controllers respectively to carry out phase control after undergoing uniform light split through the coupler, four beams of high-speed modulated light are obtained, and the four beams of high-speed modulated light enter four optical fiber amplifiers respectively to be amplified at a high power and then undergo coherent beam combination through a beam combiner; a beam splitter outputs 1% of a combined laser into the phase controllers, the combined laser undergoes phase comparison with the reference light, the comparison result is processed by the phase controllers to send out phase control signals, and four phase modulators control the phases of the beams of light respectively after receiving the phase control signals to guarantee coherent beam combination and emission angle scanning.
Description
Technical field
The present invention relates to a kind of can Dynamic link library high power optical fibre laser phased array high speed information discharger, its application
In deep space, the overlength distance space communication field such as interspace.
Background technology
A large amount of science data that space exploration produces need to rely on Large Copacity, the Space-based information transmission technology of overlength distance.
The maximum feature of deep space communication is Long-Distance without Relay transmission, Spacecraft Launch power limited, and radiofrequency propagation loss and distance
Square it is directly proportional, radiofrequency signal also limit the transmission bandwidth of communication.Therefore, how to make up huge loss and realize remote broadband
Communication is the biggest problem that deep space communication faces.In field of deep space communication, laser communication can overcome long transmission distance, narrow bandwidth
The shortcomings of.
Laser communication system adopts single high accuracy track sight at present, and 1.55 μm of semiconductor laser seed sources are through mixing
Master oscillation power amplification emission system after doped fiber amplifier, is made peak power be only 5w by amplifier saturation export-restriction left
The right side, thus limit the deep space transmission of overlength distance.Optical fiber laser has efficiency high, good beam quality, output height etc.
Advantage, and optical fiber laser laser produces it is impossible to bear big mean power in very thin fibre core, single power is low.
The synthesis of multi-path light coherence beam is good solution, the intensity right and wrong at optics coherence tomography far field beam center in theory
N times (n is the way of synthesis light beam) of optics coherence tomography light beam.Optical-fiber laser phased-array technique is exactly optical-fiber laser emerging at present
Optics coherence tomography technology, not only can achieve high emission power moreover it is possible to launching light beam scanning, can be used for laser communication Dynamic link library.
Therefore, optical-fiber laser phased-array technique is applied to deep space high speed information long-distance transmissions, to research deep space and interspace high-rate laser
Communication technology has important scientific meaning.
Content of the invention
The invention aims to realizing the high-power transmitting of high-rate laser and overlength distance transmission, proposing one kind can be dynamic
The high power optical fibre laser phased array high speed information discharger connecting.
The present invention employs the following technical solutions:
Can Dynamic link library high power optical fibre laser phased array high speed information discharger, it is characterized in that, seed source is through
One bonder light splitting, wherein light beam, as reference light, is input in phase controller, and another light beam carries out high speed information tune
System, radio-frequency signal generator enters intensity modulator with described another light beam and obtains high speed modulated signal, high speed modulated signal warp
First phase manipulator, second phase manipulator, third phase manipulator and is respectively enterd after the average light splitting of second bonder
Four phase-modulators carry out phase controlling and obtain four road high speed amplitude modulated beams, and described four road high speed amplitude modulated beams respectively enter the first optical fiber
Amplifier, the second fiber amplifier, the 3rd fiber amplifier and the 4th fiber amplifier carry out high power amplification, then through closing bundle
Device coherently combined；Beam splitter exports sub-fraction conjunction Shu Jiguang to phase controller, this conjunction Shu Jiguang with reference to light phase
Relatively, then processed by phase controller and send phase control signal, after four phase-modulators receive phase control signal
Control the phase place of every road light it is ensured that coherently combined and transmitting angle sweep.
The invention has the beneficial effects as follows:
The present invention passes through Dynamic link library, it is possible to achieve the dynamical output of spatial carrier light source；It passes through multiple conjunction Shu Fang great,
High-power output can be realized；It achieves long haul communication, can apply to overlength distance deep space high-rate information transmission.
The present invention is optical-fiber laser phased array high-rate information transmission structure, and its structure is simple, and low cost is easy to operate, can
To realize light beam wide-angle deflection, bear high power light beam, response speed is low, there is no flyback phenomenon, be suitable for deep space laser
Communication and scientific research are used.
Brief description
Fig. 1: the present invention can Dynamic link library high power optical fibre laser phased array high speed information discharger；Wherein, solid line
Represent optical signal, dotted line represents the signal of telecommunication.
Fig. 2: the present invention can Dynamic link library high power optical fibre laser phased array high speed information discharger 4 ten thousand to 35 ten thousand
The deep-space laser communication link simulation figure of kilometer.
Fig. 3: phase contrast of the present inventionWhen, far field beams main lobe passes to left avertence, and wherein a is intensity effect figure, and b is
Intensity distribution.
Fig. 4: phase contrast of the present invention, in far field center, wherein a is intensity effect figure to far field beams main lobe, b
For intensity distribution.
Fig. 5: phase contrast of the present invention, far field beams main lobe deflects to the right, and wherein a is intensity effect figure, and b is strong
Degree scattergram.
Specific embodiment
Below in conjunction with the accompanying drawings invention is described further.
As shown in figure 1, can Dynamic link library high power optical fibre laser phased array high speed information discharger, including seed source
1st, the first bonder 2, intensity modulator 3, the second bonder 4, first phase manipulator 5, second phase manipulator 6, third phase
Position manipulator 7, the 4th phase-modulator 8, the first fiber amplifier 9, the second fiber amplifier 10, the 3rd fiber amplifier 11,
4th fiber amplifier 12, bundling device 13, phase controller 14, beam splitter 15 and radio-frequency signal generator 16.Seed source 1 defeated
Go out end to be connected with the first bonder 2 input 201, the first outfan 202 of the first bonder 2 and the port of intensity modulator 3
301 connections, the second outfan 203 of the first bonder 2 is connected with the first input port 1401 of phase controller 14, and intensity is adjusted
The port 302 of device 3 processed is connected with the input port 401 of the second bonder 4, radio-frequency signal generator 16 and intensity modulator 3
Another port 303 connects；First output port 402 of the second bonder 4 is with the input port 501 of first phase manipulator 5 even
Connect, the output port 502 of first phase manipulator 5 is connected with the input port of the first fiber amplifier 9；Second bonder 4
Second output port 403 is connected with the input port 601 of second phase manipulator 6, the output port of second phase manipulator 6
602 are connected with the input port of the second fiber amplifier 10；3rd output port 404 and the third phase of the second bonder 4 are adjusted
The input port 701 of device 7 processed connects, the output port 702 of third phase manipulator 7 and the input of the 3rd fiber amplifier 11
Mouth connects；4th output port 405 of the second bonder 4 is connected with the input port 801 of the 4th phase-modulator 8, the 4th phase
The output port 802 of position manipulator 8 is connected with the input port of the 4th fiber amplifier 12；The output of the first fiber amplifier 9
Port is connected with the first input port 1301 of bundling device 13, and the of the output port of the second fiber amplifier 10 and bundling device 13
Two input ports 1302 connect, and the output port of the 3rd fiber amplifier 11 is connected with the 3rd input port 1303 of bundling device 13
Connect, the output port of the 4th fiber amplifier 12 is connected with the 4th input port 1304 of bundling device 13；The output of bundling device 13
Port 1305 is connected with the input port 1501 of beam splitter 15, the first output port 1502 and the phase controller 14 of beam splitter 15
The second input port 1402 connect, port 1403 output signal of phase controller 14 respectively with first phase manipulator 5
Port 503, the port 603 of second phase manipulator 6, the port 703 of third phase manipulator 7 and the 4th phase-modulator 8
Port 803 connects；The second port 1503 of beam splitter 15 is as output.
Preferably, seed source 1 adopts 1.06 μm of single longitudinal mode narrow linewidth laser seed sources to amplify through high power Yb dosed optical fiber
Device exports, and adopts polarization maintaining optical fibre to export to keep laser linear polarization and stable single longitudinal mode.
Preferably, four phase-modulators all enter line phase control using the phase-modulator of waveguide type optical fiber input/output
System.
Preferably, bundling device 13 carries out closing bundle using optical fiber V-shaped groove laser bundling device part.
Can Dynamic link library high power optical fibre laser phased array high speed information discharger, seed source 1 is through the first bonder 2
Light splitting, wherein light beam, as reference light, carry out high speed information modulation, 10gbps radiofrequency signal 16 after reference light light splitting
Enter intensity modulator 3 with another light beam and obtain high speed modulated signal, high speed modulated signal is after the average light splitting of the second bonder 4
Respectively enter first phase manipulator 5, second phase manipulator 6, third phase manipulator 7, the 4th phase-modulator 8 carry out phase
Position control obtains four road high speed amplitude modulated beams, and described four road high speed amplitude modulated beams respectively enter the first fiber amplifier 9, the second optical fiber is put
Big device 10, the 3rd fiber amplifier 11, the 4th fiber amplifier 12 carry out high power amplification, then through the relevant conjunction of bundling device 13
Bundle.Light beam is amplified through high-power fiber amplifier after above-mentioned phase-modulator again, and power will reach 10w.Pass through again to close
Bundle device 13 makes homology coherent laser beam combination, by four road 10w coherent laser beam combination after bundling device 13 up to 28w.Beam splitter 15 will
1% closes Shu Jiguang and reference laser phase bit comparison, according to the phase deviation of the two, then is sent by phase-control circuit 14 process
Phase control signal, by phase-modulator control every road light phase place it is ensured that coherently combined and transmitting angle sweep.
Fig. 2 be 4 ten thousand to 35 ten thousand kilometers of apparatus of the present invention deep-space laser communication link simulation figure it is known that, communication distance
When 350,000 kilometers, its safety allowance is 7.26db, has the sensitivity that much room accepts device to reduce communication.
Fig. 3 to Fig. 5 for apparatus of the present invention communication distance be 40 kilometers when, far-field intensity distribution figure, adjust each shifting respectively
In phase device, laser beam phase place can control the wavefront of light beam, realizes light beam steering.Fig. 3 is phase contrast, far field beams master
Lobe passes to left avertence.Fig. 4 is phase contrast, main lobe is in far field center.Fig. 5 is phase contrast, main lobe is to right avertence
Turn.Now ,-pi/2 and pi/2 region in, the practicable dynamic scan of optical-fiber laser phased array, realize Dynamic link library.Now, it is based on
In the laser communication system in optical-fiber laser phased array source, every laser communication terminal as a node, between each node
Light beam deflection area is the region of Dynamic link library, in this region, optical-fiber laser phased array can be relied on to realize dynamic communication.
Claims (4)
1. can Dynamic link library high power optical fibre laser phased array high speed information discharger, it is characterized in that, seed source (1) is through
One bonder (2) light splitting, wherein light beam, as reference light, is input in phase controller (14), and another light beam is carried out at a high speed
Modulates information, radio-frequency signal generator (16) enters intensity modulator (3) with described another light beam and obtains high speed modulated signal, high
Rate modulation signal respectively enters first phase manipulator (5), second phase manipulator after the average light splitting of the second bonder (4)
(6), third phase manipulator (7) and the 4th phase-modulator (8) carry out phase controlling and obtain four road high speed amplitude modulated beams, and described four
Road high speed amplitude modulated beams respectively enter the first fiber amplifier (9), the second fiber amplifier (10), the 3rd fiber amplifier (11) and
4th fiber amplifier (12) carries out high power amplification, then through bundling device (13) coherently combined；Beam splitter (15) closes bundle by 1%
Laser exports to phase controller (14), and this conjunction Shu Jiguang compares with reference to light phase, then passes through phase controller (14) place
Get a haircut out phase control signal, four phase-modulators control the phase place of every road light it is ensured that phase after receiving phase control signal
Dry conjunction is restrainted and transmitting angle sweep.
2. as claimed in claim 1 can Dynamic link library high power optical fibre laser phased array high speed information discharger, it is special
Levying is, described seed source (1) adopts 1.06 μm of single longitudinal mode narrow linewidth laser seed sources through high power ytterbium doped optical fiber amplifier
Output, adopts polarization maintaining optical fibre to export to keep laser linear polarization and stable single longitudinal mode.
3. as claimed in claim 1 can Dynamic link library high power optical fibre laser phased array high speed information discharger, it is special
Levying is, described first phase manipulator (5), second phase manipulator (6), third phase manipulator (7), the 4th phase-modulation
Device (8) carries out phase controlling using the phase-modulator of waveguide type optical fiber input/output.
4. as claimed in claim 1 can Dynamic link library high power optical fibre laser phased array high speed information discharger, it is special
Levying is, described bundling device (13) carries out closing bundle using optical fiber V-shaped groove laser bundling device part.
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| CN201410160325.6A CN103944641B (en) | 2014-04-21 | 2014-04-21 | High-power fiber laser phased array high-speed information transmitting device capable of being dynamically connected |
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| CN201410160325.6A CN103944641B (en) | 2014-04-21 | 2014-04-21 | High-power fiber laser phased array high-speed information transmitting device capable of being dynamically connected |
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| CN107703517B (en) * | 2017-11-03 | 2023-10-13 | 长春理工大学 | Airborne multi-beam optical phased array laser three-dimensional imaging radar system |
| CN110661570B (en) * | 2019-09-29 | 2023-04-11 | 长春理工大学 | Space laser communication system |
| CN113566983B (en) * | 2021-07-21 | 2023-02-28 | 中国人民解放军国防科技大学 | Laser coherent array distributed phase control system and control method |
| CN114336257B (en) * | 2021-12-30 | 2024-04-23 | 中国人民解放军国防科技大学 | Accurate phase control method of all-fiber laser phased array system |
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| CN201374492Y (en) * | 2009-03-13 | 2009-12-30 | 深圳市明鑫科技发展有限公司 | High-power single-frequency pulse/continuous dual-output fiber laser |
| JP5410927B2 (en) * | 2009-11-10 | 2014-02-05 | 株式会社マキタ | Electric tool with hook for electric tool and electric tool hook |
| CN102646916B (en) * | 2012-05-02 | 2015-05-13 | 中国人民解放军国防科学技术大学 | Coherent combination of high-power fiber laser full optical fiber structure and high brightness beam controlling method |
| CN103346470B (en) * | 2013-06-06 | 2015-08-19 | 中国人民解放军国防科学技术大学 | A kind of low-repetition-frequency optical-fiber laser optics coherence tomography system of pulse pump |
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Inventor after: Wang Tianshu Inventor after: Sun Hongwei Inventor after: Han Jian Inventor after: Zhang Peng Inventor after: Jia Qingsong Inventor after: Zhang Lizhong Inventor after: Jiang Huilin Inventor before: Wang Tianshu Inventor before: Sun Hongwei Inventor before: Han Jian Inventor before: Zhang Peng Inventor before: Jia Qingsong Inventor before: Zhang Lizhong Inventor before: Jiang Huilin |
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