CN108768516A - The laser space communication terminal of wavelength fast tunable - Google Patents
The laser space communication terminal of wavelength fast tunable Download PDFInfo
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- CN108768516A CN108768516A CN201810709015.3A CN201810709015A CN108768516A CN 108768516 A CN108768516 A CN 108768516A CN 201810709015 A CN201810709015 A CN 201810709015A CN 108768516 A CN108768516 A CN 108768516A
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- tunable
- laser
- wavelength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
- H04B10/505—Laser transmitters using external modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/564—Power control
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/50—Transmitters
- H04B10/572—Wavelength control
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optics & Photonics (AREA)
- Optical Communication System (AREA)
Abstract
The present invention proposes a kind of laser space communication terminal of wavelength fast tunable, including：Control unit, laser control driving, semiconductor laser with tunable, modulation/demodulation modules, image intensifer, collimator, beam splitter, direction are to Barebone, telescopic system, servo-drive, tunable optic filter, condenser lens, photoelectric detection module.When as signal transmitting terminal, the instruction that control unit is sent out controls the output power and wavelength of semiconductor laser with tunable by laser control driving, output light is modulated/and demodulation module is loaded electrical modulation signal, and the modulated signal of modulation/demodulation modules output amplify through image intensifer after by collimator with parallel light emergence, free space is emitted to by telescopic system after beam splitter beam splitting is reached and is directed toward to Barebone.The present invention, as light source, may be implemented the precision tuning of wavelength and be switched fast, improve the dynamic configurability of laser space communication link using semiconductor laser with tunable.
Description
Technical field
The invention belongs to laser space communication fields, are related to a kind of laser space communication terminal of wavelength fast tunable.
Background technology
Compared to other space communication means, laser communication technology is with message capacity is big, message transmission rate is high, transmitting-receiving
The advantages such as system bulk is small and anti-electromagnetic interference capability is strong.With the fast development of laser communication technology and space optical-fiber network,
Laser space communication terminal needs to have the harmonious ability being switched fast of Wavelength tunable, to promote entire space optical communication links
Dynamic configurability improves flexibility and the reliability of the whole network work.Therefore, a kind of wave based on semiconductor laser with tunable
The laser space communication terminal of long fast tunable is suggested.
It is relatively more about the research of semiconductor laser with tunable itself at present, but it is applied to laser space communication
Research it is fewer.Existing space laser communication terminal is generally used as transmitting light source using two or more discrete lasers,
To realize that the switching between two or more wavelength communicates.Patent " a kind of transceiver terminal of laser space communication networking and operation side
Method " (CN201611247083.X) discloses a kind of optical communication terminal equipped with dual-wavelength laser signal source and narrowband detector,
Can automatic identification receive optical wavelength, to selection and the different wavelength of transmitted light of reception optical wavelength.Due to the terminal using
Two independent laser signal sources can only switch between two launch wavelengths, therefore length flexible is poor, switch speed
It is relatively slow.Patent " optical communication terminal " (CN201580022488.0) discloses a kind of optic communication being operated in two complement modes
Terminal can emit the light of first wave length and receive the light of second wave length in a pattern, in another pattern, can emit
The light of two wavelength and the light for receiving first wave length.Due to needing two pairs of spatially discrete transmitter/detectors, system is increased
Complexity, flexibility is poor.
Using the discrete two or more lasers in space as light source, limited fixed several wavelength can only be utilized logical
Road, wavelength tuning energy force difference, switch speed be slow and system complex.In laser space communication terminal, tunable semiconductor is used
Laser replaces discrete lasers or can solve above-mentioned deficiency as their backup light source, reduces system cost.Pass through state
Inside and outside patent and literature search there are no logical about the wavelength fast tunable space laser based on semiconductor laser with tunable
Believe the report of terminal.
Invention content
Problems to be solved by the invention are to provide a kind of laser space communication terminal of wavelength fast tunable, the laser
Communication terminal can solve the shortcomings of laser space communication terminal wavelength is single, flexibility is poor, make spatial light network switching node
Has Wavelength routing and the functions such as wavelength is restructural.
Technological means for solving project is that the present invention proposes that a kind of laser space communication of wavelength fast tunable is whole
End, including：Control unit, laser control driving, semiconductor laser with tunable, modulation/demodulation modules, image intensifer, standard
Straight device, beam splitter, direction are to Barebone, telescopic system, servo-drive, tunable optic filter, condenser lens, photodetection mould
Block；When the terminal is as signal transmitting terminal, the instruction that control unit is sent out partly is led by laser control driving to tunable
The output power and wavelength of body laser are controlled, and the output light of semiconductor laser with tunable is modulated/demodulation module quilt
In load electrical modulation signal and modulation/demodulation modules output modulated signal amplify through image intensifer after by collimator with
Parallel light emergence is emitted to free space after beam splitter beam splitting is reached and is directed toward to Barebone by telescopic system；The end
When end is as signal receiving end, control unit is directed toward angle and position to Barebone built-in reflective mirror by servo-drive adjustment
It sets, light beam is made to deflect and search and is directed at communication target；The light signal fed back of the communication target transmitting is through telescope
System is directed toward to Barebone and beam splitter arrival tunable optic filter, and the centre frequency of tunable optic filter is led to according to different
Letter wavelength is automatically adjusted, and converges to photodetection mould by the optical signal line focus lens that tunable optic filter exports
Block is detected, and optical signal is changed electric signal and reached after modulation/demodulation modules demodulate by photoelectric detection module controlling
Unit.
Further, as a preferred technical solution of the present invention：Laser control driving include fpga chip,
Power control circuit, wavelength tuning/control switching circuit and temperature-control circuit, wherein fpga chip are for passing through power control
Circuit makes semiconductor laser with tunable transmitting laser and controls luminous power, and passes through wavelength tuning/switching control electricity
Road is tuned semiconductor laser with tunable wavelength to switch to specified communication wavelengths, and passes through temperature-control circuit control
The temperature of semiconductor laser with tunable processed.
Further, as a preferred technical solution of the present invention：The tunable optic filter selection is currently received
Light signal fed back wavelength adjusts into line frequency and inhibits to other interference light.
Further, as a preferred technical solution of the present invention：The semiconductor laser with tunable is monolithic collection
At distributed Bragg reflection type laser.
Further, as a preferred technical solution of the present invention：The tunable optic filter is narrow band filter.
Invention effect is：
The laser space communication terminal of the wavelength fast tunable of the present invention, has the following advantages that compared with prior art：
1. present invention employs semiconductor laser with tunable and tunable optic filter, have the quick of multiple wavelength channels
Switching capability, switch speed reaches 10MHz or more, while also can receive different wavelength signals.Spatial light network exchange can be achieved
Node it is restructural, improve the flexibility of network configuration.
2. the semiconductor laser with tunable that the present invention uses both can also replace multiple and different waves separately as light source
Long laser is used for space wavelength-division multiplex system as backup light source, reduces the cost of whole system.
3. the present invention using semiconductor laser with tunable as light source, it can be achieved that signal between different wave length is converted,
For Wavelength routing, dynamic optical network is realized.
Description of the drawings
Fig. 1 is present system structural schematic diagram.
Fig. 2 is the control schematic diagram of semiconductor laser with tunable in the present invention.
Fig. 3 is the operating diagram that the present invention is applied to laser space communication.
Specific implementation mode
Hereinafter, being described in detail for the present invention based on attached drawing.
As shown in Figure 1, the present invention devises a kind of laser space communication terminal of wavelength fast tunable, including：Control
Unit 101, laser control driving 102, semiconductor laser with tunable 103, modulation/demodulation modules 104, image intensifer 105,
Collimator 106, is directed toward to Barebone 108, telescopic system 109, tunable optic filter 110, condenser lens beam splitter 107
111, photoelectric detection module 112 and servo-drive 113 form.
As shown in Fig. 2, the laser control driving 102 during this is clearly demarcated include fpga chip 201, power control circuit 202,
204 4 part of wavelength tuning/control switching circuit 203 and temperature-control circuit is mainly used for controlling tunable semiconductor laser
Output power, wavelength tuning, the wavelength of device are switched fast and temperature.Semiconductor laser with tunable and laser control driving,
The stabilized lasers output that can accurately and fast switch for providing wavelength；It is set according to the operation principle of semiconductor laser with tunable
Meter control driving circuit, can be such that output wavelength is switched over the speed of 10MHz or more.Wherein, fpga chip 201 is for passing through
Power control circuit 202 makes semiconductor laser with tunable 103 emit laser and controls luminous power, and passes through wavelength tune
Humorous/control switching circuit 203 is tuned to switch to specified communication wavelengths 103 wavelength of semiconductor laser with tunable,
And the temperature of semiconductor laser with tunable 103 is controlled by temperature-control circuit 204.
A kind of operation principle of the laser space communication terminal of wavelength fast tunable described in the invention is：
When the terminal is as signal transmitting terminal, the instruction that control unit 101 is sent out drives 102 pairs by laser control
The output power and wavelength of semiconductor laser with tunable 103 are controlled, the output light warp of semiconductor laser with tunable 103
Modulation/demodulation modules 104 are loaded the modulated signal of electrical modulation signal and the output of modulation/demodulation modules 104 through image intensifer
Gaussian beam progress shaping is expanded by collimator 106 after 105 amplifications, is collimated as parallel light emergence, and pass through beam splitter
107 are split, and reach and are directed toward to being emitted to free space by telescopic system 109 after Barebone 108.
When the terminal is as signal receiving end, control unit 101 is directed toward by the adjustment of servo-drive 113 to Barebone
The angles and positions of 108 built-in reflective mirrors make light beam deflect and search and are directed at communication target, according to communication target
Spatial position adjusts the rotation angle of built-in reflective mirror, realizes and is directed toward alignment and tracking；The feedback light of the communication target transmitting
Signal reaches tunable optic filter 110, tunable filtering through telescopic system 109, direction to Barebone 108 and beam splitter 107
The centre frequency of device 110 is automatically adjusted according to different communication wavelengths, and the tunable optic filter 110 is narrow-band filtering
Device, for selecting currently received light signal fed back wavelength and inhibiting to other interference light.And pass through tunable filtering
The optical signal line focus lens 111 that device 110 exports converge to photoelectric detection module 112 and are detected, by photoelectric detection module 112
Optical signal is changed into electric signal and reaches control unit 101 after the demodulation of modulation/demodulation modules 104.
Preferably, the semiconductor laser with tunable 103 is single chip integrated distributed Bragg reflection type laser.
Also, the semiconductor laser with tunable 103 can be complete automatically controlled laser, can carry out the coarse tuning of wavelength and fine
Tuning, wavelength switch speed is up to 10MHz or more.
A kind of laser space communication terminal of wavelength fast tunable provided by the invention, implementing procedure include following step
Suddenly：
Step 1：Wavelength tuning and switching.Control unit 101 issues instructions to laser control driving 102, fpga chip
201 make semiconductor laser with tunable 103 emit laser and control luminous power by power control circuit 202；Pass through
Wavelength tuning/control switching circuit 203 is carried out coarse tuning and fine tuning to laser wavelength, is cut with the wavelength of 10MHz or more
Throw-over degree accurately switches to specified communication wavelengths；Ensure that the temperature of laser is stablized by temperature-control circuit 204, avoids wave
Long drift and power jitter.
Step 2：Signal emits.The output light of semiconductor laser with tunable 103 is modulated/and modulation module 104 is loaded
Upper electrical modulation signal enters collimator 106, after collimator 106 expands light beam progress shaping after the amplification of image intensifer 105
With parallel light emergence, after reach and be directed toward to Barebone 108 after 107 beam splitting of beam splitter, most emit afterwards through telescopic system 109
To free space.
Step 3：It is directed toward alignment.Control unit 101 is directed toward by controlling the adjustment of servo-drive 113 to built in Barebone 108
The angles and positions of speculum, make light beam deflect, and search and are directed at communication target；When counterparting communications intended recipient to this end
When holding the signal light sent, emit light signal fed back.
Step 4：Signal receives.Signal light or light signal fed back from communication target are through telescopic system 109, direction pair
Barebone 108 and beam splitter 107 reach tunable optic filter 110；Tunable optic filter 110 is narrow band filter, can be according to working as
Preceding its centre frequency of communication wavelengths adjust automatically makes optical signal pass through to communication wavelengths, and interference light is suppressed；By tunable
The optical signal line focus lens 111 of filter converge to photodetector 112, optical signal are changed electric signal, finally through toning
The demodulation of system/demodulation module 104 reaches control unit 101.
Step 5：Communication link is established.Control unit 101 according to step 3 and step 4 to the light signal fed back that receives into
Row discriminance analysis sends instructions to servo-drive 113, and the angle to Barebone built-in reflective mirror is directed toward according to the algorithm adjustment of setting
Degree and position, until receiving the feedback light from communication target, communication link is completed to establish.
Fig. 3 is the operating diagram that the present invention is applied to laser space communication.As shown in figure 3, laser communication link is by end
End A and terminal B realizes, terminal A and terminal B are the laser space communication terminal of wavelength fast tunable.Assuming that tunable
The wavelength tuning range of semiconductor laser is λ1~λn, when being communicated, terminal A can emit λ1To λnBetween it is any one
A wavelength signals λATerminal B, terminal B is given to be received by tunable optic filter and photoelectric detection module.Meanwhile terminal B hairs
Penetrate λ1To λnBetween any one wavelength signals λB(λA≠λB) terminal A is given, terminal A is also by tunable optic filter and photodetection
Module is completed signal and is received.
To sum up, space optical communication terminal provided by the invention, using semiconductor laser with tunable as light source, Ke Yishi
Show the precision tuning of wavelength and be switched fast, improves the dynamic configurability of laser space communication link.
It should be noted that described above is only the preferred embodiment of the present invention, it should be understood that for art technology
For personnel, several changes and improvements can also be made under the premise of not departing from the technology of the present invention design, these are included in
In protection scope of the present invention.
Claims (5)
1. a kind of laser space communication terminal of wavelength fast tunable, which is characterized in that including：Control unit, laser control
Make driving, semiconductor laser with tunable, modulation/demodulation modules, image intensifer, collimator, beam splitter, direction to Barebone,
Telescopic system, servo-drive, tunable optic filter, condenser lens, photoelectric detection module；
When the terminal is as signal transmitting terminal, the instruction that control unit is sent out is driven by laser control to tunable half
The output power and wavelength of conductor laser are controlled, and the output light of semiconductor laser with tunable is modulated/demodulation module
The modulated signal for being loaded electrical modulation signal and modulation/demodulation modules output passes through collimator after image intensifer amplification
With parallel light emergence, free space is emitted to by telescopic system after beam splitter beam splitting is reached and is directed toward to Barebone；
When the terminal is as signal receiving end, control unit is directed toward by servo-drive adjustment to Barebone built-in reflective mirror
Angles and positions, so that light beam is deflected and is searched and be directed at communication target；The feedback light letter of the communication target transmitting
Number through telescopic system, it is directed toward tunable optic filter, the centre frequency root of tunable optic filter is reached to Barebone and beam splitter
It is automatically adjusted according to different communication wavelengths, and is converged to by the optical signal line focus lens that tunable optic filter exports
Photoelectric detection module is detected, and optical signal is changed electric signal by photoelectric detection module and is demodulated by modulation/demodulation modules
After reach control unit.
2. the laser space communication terminal of wavelength fast tunable according to claim 1, which is characterized in that the laser
Device control driving includes fpga chip, power control circuit, wavelength tuning/control switching circuit and temperature-control circuit, wherein
Fpga chip is used to make semiconductor laser with tunable emit laser by power control circuit and control luminous power, and
Semiconductor laser with tunable wavelength is tuned by wavelength tuning/control switching circuit to switch to specified communication wave
It is long, and pass through the temperature of temperature-control circuit control semiconductor laser with tunable.
3. the laser space communication terminal of wavelength fast tunable according to claim 1, which is characterized in that described adjustable
Humorous filter selects currently received light signal fed back wavelength to be adjusted into line frequency and inhibits to other interference light.
4. the laser space communication terminal of wavelength fast tunable according to claim 1, which is characterized in that described adjustable
Humorous semiconductor laser is single chip integrated distributed Bragg reflection type laser.
5. the laser space communication terminal of wavelength fast tunable according to claim 1, which is characterized in that described adjustable
Humorous filter is narrow band filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810709015.3A CN108768516A (en) | 2018-07-02 | 2018-07-02 | The laser space communication terminal of wavelength fast tunable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810709015.3A CN108768516A (en) | 2018-07-02 | 2018-07-02 | The laser space communication terminal of wavelength fast tunable |
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| CN108768516A true CN108768516A (en) | 2018-11-06 |
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| CN201810709015.3A Pending CN108768516A (en) | 2018-07-02 | 2018-07-02 | The laser space communication terminal of wavelength fast tunable |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889252A (en) * | 2019-02-18 | 2019-06-14 | 中国科学院上海光学精密机械研究所 | Space laser communications system |
| WO2020124683A1 (en) * | 2018-12-20 | 2020-06-25 | 福州高意光学有限公司 | Vcsel-based free space active optical transceiver component |
| WO2020135164A1 (en) * | 2018-12-25 | 2020-07-02 | 杭州耀芯科技有限公司 | Apparatus, system, and method for aligned transmission of optical signal in free space |
| WO2020135163A1 (en) * | 2018-12-26 | 2020-07-02 | 杭州耀芯科技有限公司 | Communication terminal, communication device and communication system based on free-space optical communication |
| CN112583482A (en) * | 2020-11-17 | 2021-03-30 | 新沂市锡沂高新材料产业技术研究院有限公司 | Novel atmosphere laser communication equipment |
| CN112769480A (en) * | 2021-01-21 | 2021-05-07 | 浙江大学 | Spatial laser-to-optical fiber coupling device with ultra-large field angle and application method |
| CN114204411A (en) * | 2021-11-03 | 2022-03-18 | 武汉光迅科技股份有限公司 | Laser equipment |
| CN114710207A (en) * | 2022-03-29 | 2022-07-05 | 长春理工大学 | Wavelength self-adaptive matching terminal, system and method applied to multi-wavelength free matching laser communication |
| CN115085806A (en) * | 2022-04-27 | 2022-09-20 | 苏州中科光桥空间技术有限公司 | Transmit-receive optical path design and terminal device for low-speed inter-satellite laser communication |
| CN115225148A (en) * | 2022-06-13 | 2022-10-21 | 中山水木光华电子信息科技有限公司 | Communication system and method based on space light wave identification |
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| CN112583482A (en) * | 2020-11-17 | 2021-03-30 | 新沂市锡沂高新材料产业技术研究院有限公司 | Novel atmosphere laser communication equipment |
| CN112769480A (en) * | 2021-01-21 | 2021-05-07 | 浙江大学 | Spatial laser-to-optical fiber coupling device with ultra-large field angle and application method |
| CN112769480B (en) * | 2021-01-21 | 2021-11-30 | 浙江大学 | Spatial laser-to-optical fiber coupling device with ultra-large field angle and application method |
| CN114204411B (en) * | 2021-11-03 | 2023-10-03 | 武汉光迅科技股份有限公司 | Laser equipment |
| CN114204411A (en) * | 2021-11-03 | 2022-03-18 | 武汉光迅科技股份有限公司 | Laser equipment |
| CN114710207A (en) * | 2022-03-29 | 2022-07-05 | 长春理工大学 | Wavelength self-adaptive matching terminal, system and method applied to multi-wavelength free matching laser communication |
| CN114710207B (en) * | 2022-03-29 | 2023-10-27 | 长春理工大学 | Wavelength self-adaptive matching terminal, system and method applied to multi-wavelength free matching laser communication |
| CN115085806A (en) * | 2022-04-27 | 2022-09-20 | 苏州中科光桥空间技术有限公司 | Transmit-receive optical path design and terminal device for low-speed inter-satellite laser communication |
| CN115085806B (en) * | 2022-04-27 | 2024-04-19 | 苏州中科光桥空间技术有限公司 | Design method of transceiving optical path for low-speed inter-satellite laser communication and terminal device |
| CN115225148A (en) * | 2022-06-13 | 2022-10-21 | 中山水木光华电子信息科技有限公司 | Communication system and method based on space light wave identification |
| CN115225148B (en) * | 2022-06-13 | 2024-01-23 | 中山水木光华电子信息科技有限公司 | Communication system and method based on space light wave identification |
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Application publication date: 20181106 |