CN202978942U - Free space light communication system based on modulation retro-reflector - Google Patents
Free space light communication system based on modulation retro-reflector Download PDFInfo
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- CN202978942U CN202978942U CN 201220661871 CN201220661871U CN202978942U CN 202978942 U CN202978942 U CN 202978942U CN 201220661871 CN201220661871 CN 201220661871 CN 201220661871 U CN201220661871 U CN 201220661871U CN 202978942 U CN202978942 U CN 202978942U
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Abstract
The utility model relates to the space light communication technology field and specifically relates to a free space light communication system based on a modulation retro-reflector. A local light beam transmitting end is used for transmitting coded laser light beams; a beam splitter mirror is used for deflecting transmitted light and permeating retro-reflection light; a telescope system is used for automatically scanning and tracking a remote object; a spatial remote modulation retro-reflector system is used for loading an acquired signal to an incident light beam and making the light beam carry out retro-reflection along an original path; and a local light beam receiving end is used for receiving the retro-reflection light beam and demodulating the signal out. According to the free space light communication system, a remote portion takes a specially-designed retro-reflection reinforced scattering surface or a cube-corner prism as a light retro-reflector, so cost, weight and thickness of the system are reduced greatly, and a retro-reflection surface with a random area can be prepared. The free space light communication system facilitates integration, is applicable to various occasions and has quite wide popularization and application prospects.
Description
Technical field
The utility model relates to the spatial light communication technique field, specifically relates to a kind of free space light communication system based on the modulating retroreflective device.
Background technology
The free space optical communication has shown very attracting prospect in recent years.Due to the maturation of laser and Integrated Light system, and the inherent characteristics such as eye-safe of near infrared light, make the spatial light communication become a kind of very attractive data transfer means.The intrinsic advantage of optical communication is: the possibility that huge bandwidth, quilt are intercepted and captured is little, volume is little, payload is light, have antijamming capability etc.
For traditional space optics link transmission system, except commonly used modulating/demodulating, control, capture device and related software, also need high-quality telescope that enough LASER Light Source etc. greatly of accurate pointing and tracking, two power are provided.But because equipment cost is higher, instrument requires also harsher, has limited promoting the use of of this light communication system.
The utility model content
For the technical problem that exists in prior art, the utility model provides a kind of both-way communication, free space light communication system based on the modulating retroreflective device easy of integration, reasonable in design realized.
To achieve these goals, the technical scheme of employing is as follows:
A kind of free space light communication system based on the modulating retroreflective device is characterized in that having,
Local beam emissions end is used for emission through the laser beam of coding;
Spectroscope is used for the deflection utilizing emitted light and sees through retroreflection light;
Telescopic system is used for automatic scan and follows the tracks of remote object;
The modulating retroreflective device system that the space is long-range, the signal loading that is used for collecting be at incident beam, and with light beam along the retroeflection of former road;
Local light beam receiving terminal, for the light beam that receives retroeflection, and with the signal demodulation out.
Further, described beam emissions end is comprised of encoder and infrared laser.
Further, described telescopic system is comprised of telescope, deflecting mirror and automatic control system thereof.
Comparatively perfect is that optical imaging apparatus and control terminal that described automatic control system is used by imaging form.
Further, described modulating retroreflective device system is comprised of light retroreflector, optical modulator and control unit thereof.
Comparatively perfect is, described smooth retroreflector is that retroeflection strengthens scattering surface or prism of corner cube, and control unit is provided with power module.
Further, the system integration of described modulating retroreflective device has detector and decoder a(108).
Further, described light beam receiving terminal is by photo-detector, decoder b(113) and display form.
The utility model is based on the free space light communication system of modulating retroreflective device, and its transmitting/receiving system is all built in this locality, and operation wavelength is in human eye safe waveband, and power is little, and simple in structure, and the operating temperature range of system is very wide.
Simultaneously, communication system is divided into local and remote two parts, and local part only need to use a laser just can realize both-way communication.The retroeflection enhancing scattering surface of remote portion employing particular design or prism of corner cube are as the light retroreflector, reduce greatly system cost and the weight and the thickness that have reduced system, and can make the retro-reflective surface of arbitrary area, be beneficial to very much integratedly, be fit to very much the use of various occasions.
The utility model is based on the free space light communication system of modulating retroreflective device, have boundless promotion and application prospect, it will be established solid foundation and development guarantee will be provided for communication between the building, aerological sounding, industrial processes real-time communication, accidental disaster rescue and military surveillance and commander etc.
Description of drawings
For the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing, the utility model is further described.
Fig. 1 is based on the structural representation block diagram of the free space light communication system of modulating retroreflective device.
Embodiment
See also Fig. 1, a kind of free space light communication system based on the modulating retroreflective device has:
Local beam emissions end is used for emission through the laser beam of coding, is comprised of encoder 101 and infrared laser 102, and encoder 101 is used for to emission light beam coding, and infrared laser 102 is operated in 1.55 mu m wavebands of eye-safe.
Telescopic system, be used for automatic scan and follow the tracks of remote object, formed by telescope 103, deflecting mirror 105 and automatic control system 115 thereof, optical imaging apparatus and control terminal that automatic control system 115 is used by imaging form, and the modulating retroreflective device is imaged on optical imaging apparatus, if image space slip chart inconocenter position, control terminal sends instruction to deflecting mirror 105, adjust beam direction, light beam can be incided in modulating retroreflective device system all the time, realize automatic tracking function.
The modulating retroreflective device system that the space is long-range, the signal loading that is used for collecting be at incident beam, and with light beam along the retroeflection of former road.Modulating retroreflective device system is comprised of light retroreflector 109, optical modulator 106 and control unit 110 thereof, optical modulator 106 is used for loading the signal that needs transmission to the retroeflection light beam, light retroreflector 109 is used for light beam along the retroeflection of former road, and light retroreflector 109 is retroeflection enhancing scattering surface or prism of corner cube.
Simultaneously, control unit 110 is provided with power module 111.The system integration of modulating retroreflective device has detector 107 and the decoder a108 that understands from the information of this locality, after correct identification incident light, optical modulator 106 under the driving of control unit 110 with the signal loading that collects to the light beam of retroeflection.
Local light beam receiving terminal, for the light beam that receives retroeflection, and with the signal demodulation out.Be comprised of photo-detector 112, decoder b113 and display 114, photo-detector 112 receives the light beam of retroeflection, by decoder b113 with signal decoding out, and is presented on display 114.
Based on the free space light communication system of modulating retroreflective device, the means of communication that it is concrete, step is as follows:
1., incoming laser beam is encoded, the information that need to transmit to remote object of loading;
2., incident beam enters telescopic system after by spectroscope 104 reflection, by the automatic tracking function of telescopic system, incident beam is fired to the long-range modulating retroreflective device system in space;
3., laser signal is received by the detector 107 of the long-range modulating retroreflective device system in space, after identifying signal through decoder a108, the signal that needs transmit back local system passes through control unit 110 driving optical modulators 106, with signal loading on the laser beam of light retroreflector 109 former road retroeflection;
4., the retroeflection light beam that returns of former road sees through spectroscope 104 and enters local light beam receiving terminal, photo-detector 112 utilizes decoder b113 that the signal solution is read out after detecting the light beam of retroeflection, and shows on display 114.
Above content is only to the utility model structure and design example and explanation; affiliated those skilled in the art make various modifications to described specific embodiment or replenish or adopt similar mode to substitute; only otherwise depart from structure and the design of utility model or do not surmount this scope as defined in the claims, all should belong to protection range of the present utility model.
Claims (8)
1. the free space light communication system based on the modulating retroreflective device, is characterized in that having,
Local beam emissions end is used for emission through the laser beam of coding;
Spectroscope is used for the deflection utilizing emitted light and sees through retroreflection light;
Telescopic system is used for automatic scan and follows the tracks of remote object;
The modulating retroreflective device system that the space is long-range, the signal loading that is used for collecting be at incident beam, and with light beam along the retroeflection of former road;
Local light beam receiving terminal, for the light beam that receives retroeflection, and with the signal demodulation out.
2. a kind of free space light communication system based on the modulating retroreflective device according to claim 1, is characterized in that, described beam emissions end is comprised of encoder and infrared laser.
3. a kind of free space light communication system based on the modulating retroreflective device according to claim 1, is characterized in that, described telescopic system is comprised of telescope, deflecting mirror and automatic control system thereof.
4. a kind of free space light communication system based on the modulating retroreflective device according to claim 3, is characterized in that, optical imaging apparatus and control terminal that described automatic control system is used by imaging form.
5. a kind of free space light communication system based on the modulating retroreflective device according to claim 1, is characterized in that, described modulating retroreflective device system is comprised of light retroreflector, optical modulator and control unit thereof.
6. a kind of free space light communication system based on the modulating retroreflective device according to claim 5, is characterized in that, described smooth retroreflector is that retroeflection strengthens scattering surface or prism of corner cube, and control unit is provided with power module.
7. a kind of free space light communication system based on the modulating retroreflective device according to claim 5, is characterized in that, the system integration of described modulating retroreflective device has detector and decoder a(108).
8. a kind of free space light communication system based on the modulating retroreflective device according to claim 1, is characterized in that, described light beam receiving terminal is by photo-detector, decoder b(113) and display form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201220661871 CN202978942U (en) | 2012-12-05 | 2012-12-05 | Free space light communication system based on modulation retro-reflector |
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| CN 201220661871 CN202978942U (en) | 2012-12-05 | 2012-12-05 | Free space light communication system based on modulation retro-reflector |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983904A (en) * | 2012-12-05 | 2013-03-20 | 合肥鼎臣光电科技有限责任公司 | Free space optical communication system based on modulation retroflector and communication method thereof |
| CN103746741B (en) * | 2014-01-17 | 2016-06-15 | 清华大学 | A kind of based on the outdoor wireless optical mobile communication system following the trail of registration mechanism |
| CN107579776A (en) * | 2017-09-21 | 2018-01-12 | 成都驹月科技有限公司 | Optical fiber telecommunications system based on free space |
| TWI735194B (en) * | 2020-03-30 | 2021-08-01 | 國立臺灣科技大學 | Wavelength tunable bidirectional optical wireless communication system based on self-injection lock |
-
2012
- 2012-12-05 CN CN 201220661871 patent/CN202978942U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102983904A (en) * | 2012-12-05 | 2013-03-20 | 合肥鼎臣光电科技有限责任公司 | Free space optical communication system based on modulation retroflector and communication method thereof |
| CN102983904B (en) * | 2012-12-05 | 2015-09-09 | 合肥鼎臣光电科技有限责任公司 | Based on free-space method system and the means of communication thereof of modulating retroreflective device |
| CN103746741B (en) * | 2014-01-17 | 2016-06-15 | 清华大学 | A kind of based on the outdoor wireless optical mobile communication system following the trail of registration mechanism |
| CN107579776A (en) * | 2017-09-21 | 2018-01-12 | 成都驹月科技有限公司 | Optical fiber telecommunications system based on free space |
| TWI735194B (en) * | 2020-03-30 | 2021-08-01 | 國立臺灣科技大學 | Wavelength tunable bidirectional optical wireless communication system based on self-injection lock |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20151205 |
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| EXPY | Termination of patent right or utility model |