CN206060768U - A kind of reverse modulation free-space optical communication system based on pseudo conjugation reflector - Google Patents
A kind of reverse modulation free-space optical communication system based on pseudo conjugation reflector Download PDFInfo
- Publication number
- CN206060768U CN206060768U CN201620817270.6U CN201620817270U CN206060768U CN 206060768 U CN206060768 U CN 206060768U CN 201620817270 U CN201620817270 U CN 201620817270U CN 206060768 U CN206060768 U CN 206060768U
- Authority
- CN
- China
- Prior art keywords
- reverse
- optical
- reflector
- pseudo
- conjugation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of reverse modulation free-space optical communication system based on pseudo conjugation reflector.This system is made up of optical transceiver end and reverse manipulator end.Optical transceiver end includes light emission module, the first photo-detector module.Reverse manipulator end includes the second photo-detector module, reverse modulator block.Wherein, reverse modulator block is made up of pseudo conjugation reflector, spatial light modulator and signal input unit.Reverse modulator block can expand the angle of visual field of reverse manipulator with the optical system of integrated opal camera lens or other similar functions.Reverse manipulator end of the present utility model is low in energy consumption, compact conformation, is adapted to be operated in the occasion of resource-constrained.Therefore, the utility model proposes system have very many important applications, such as microsatellite/UAV Communication, target recognition, environmental monitoring etc..
Description
Technical field
This utility model belongs to wireless communication technology field, is related to a kind of laser communication technology, and in particular to one kind is based on
The reverse modulation free-space optical communication system of pseudo conjugation reflector.
Technical background
FSO is often defined as a kind of utilization laser beam and information is sent to the logical of another point from a bit
Letter technology.It combines the advantage of radio communication and fiber optic communication, both with channel capacity is big, it is strong antijamming capability, thief-proof
Listen ability strong and the advantages of without the need for frequency spectrum licences, the communications cable need not be laid again and installed and safeguard convenient.Therefore, it is freely empty
Between optic communication can yet be regarded as a kind of effective way for solving " last one kilometer " problem, also can be used as radio communication and fiber optic communication
A kind of complementary technology, and can be used for optical fiber backup, communication recovery, interim and mobile high speed data link etc. after calamity.Thing
In reality, FSO can also as build Incorporate network communication link key technology, but space networks
Network is a dynamic network, often distant between communication node, and there is high speed relative motion, therefore will set up two-way
Letter link is relatively difficult.Traditional symmetrical duplex free-space optical communication system is by catching in communication two ends configuration high accuracy
Bidirectional communication link is set up with system.Catching can increase communication terminal size, weight and power consumption to a certain extent with system, drop
The low payload of terminal.For this problem, research worker proposes a kind of asymmetric freedom based on reverse manipulator
Space optical communication system, can be such that link one end catches with system and laser instrument without the need for deployment, so as to reduce the terminal size, weight
And power consumption.Reverse manipulator is made up of retro-reflector and spatial light modulator, and the retro-reflective properties of retro-reflector make inverse
It is easier to be aligned by optical transceiver end fast Acquisition to manipulator end.However, in systems in practice, optical transceiver termination is received to be come
Round-trip transmission to be experienced from the echo optical signal at reverse manipulator end so that the echo signal intensity is decayed and linkage length
Biquadratic be directly proportional, and affected by twice atmospheric turbulance.Therefore, it is existing using the reverse of single reverse manipulator
Modulation free-space optical communication system is typically only capable of realizing several kilometers of communication distances, it is clear that cannot meet at a distance of ten several kilometers or even
The networking requirement of tens thousand of kilometers of spatial information nodes.
Utility model content
It is above-mentioned because the reverse modulation FSO distance that atmospheric turbulance brings is limited in order to solve the problems, such as, this
Utility model proposes a kind of corrective measure, is exactly, as retro-reflector, effectively can to drop using pseudo conjugation reflector
Beam scintillation and drift that low atmospheric turbulance causes, increase effective reflective light intensity, lead to so as to increase reverse modulation free space optical
The communication distance and transmission quality of letter.
The technical scheme adopted by this utility model is as follows：
A kind of reverse modulation free-space optical communication system based on pseudo conjugation reflector, including optical transceiver end and
Reverse manipulator end, wherein, the optical transceiver end includes light emission module, the first photo-detector module；The reverse modulation
Device end includes the second photo-detector module, reverse modulator block.
Further, the light emission module includes the first signal input unit, the first optical antenna and laser instrument.First letter
Number input block drives laser instrument, optical signal to send out to reverse manipulator end through the first optical antenna using reactance modulation system
Penetrate；The first photo-detector module is by the first shared optical antenna, the first photodiode and the first signal processing unit
Composition.First optical antenna receives the optical signal from reverse manipulator end, and it is photosensitive to focus on first photodiode
In region, the first photodiode then converts optical signals to the signal of telecommunication, and through the first signal processing unit by signal of telecommunication institute
The data recovery of carrying is out.
Further, the second photo-detector module is by the second optical antenna, the second photodiode and secondary signal
Reason unit composition.Second optical antenna receives the optical signal from optical transceiver end, and focuses on second photodiode
In photosensitive region, the second photodiode then converts optical signals to the signal of telecommunication, and through secondary signal processing unit by telecommunications
Data recovery entrained by number is out；The reverse modulator block is by pseudo conjugation reflector, spatial light modulator and
Binary signal input block is constituted, and the optical signal from optical transceiver end is modulated and its retrodirective reflection is gone back.
Further, the pseudo conjugation reflector is a kind of micro- retro-reflector array, can produce pseudo- phase place altogether
Yoke echo, can receive echo-signal not by atmospheric turbulance disturbing influence at optical transceiver end；The reverse manipulator
Available field of view angle can be enlarged by using preposition opal camera lens, big angle of visual field imaging system；The reverse manipulator
Module can adopt sheet type pseudo conjugation reflector and the combination of sheet type pixelation spatial light modulator to make.
This utility model beneficial effect is：
The utility model proposes pseudo conjugation reflector carrys out structure used in reverse modulation free-space optical communication system
Reverse manipulator is built, and forms pseudo conjugation echo, disturbance of the atmospheric turbulance to laser beam can be completely inhibited, obtained without sudden strain of a muscle
Rift-free echo-signal is sparkled, that is, the reverse modulation FSO not affected by atmospheric turbulance can be realized.Together
When, can be laminated form based on the reverse manipulator of pseudo conjugation reflector, further improve reverse manipulator end
Compactedness.To sum up, the reverse manipulator end based on pseudo conjugation reflector is applied to that scarcity of resources, load is limited, pointing is tired
In the working environment of difficult and strong turbulence condition, so as to promote the reverse modulation free space optical based on pseudo conjugation reflector to lead to
The extensive of the field such as communication, UAV Communication, marine vessel communication, environmentally sensitive network should between star-ground/star-star for letter system
With.
Description of the drawings
With reference to the accompanying drawings and detailed description this utility model is described in detail.
Fig. 1 is a kind of structural representation of the reverse modulation free-space optical communication system based on pseudo conjugation reflector
Figure.
Fig. 2 is the two-dimensional structure schematic diagram of two kinds of typical pseudo conjugation reflectors.Fig. 2（a）For a kind of micro- corner reflection
The conjugation reflector schematic diagram of device array；Fig. 2（b）For a kind of conjugation reflector schematic diagram of micro- lenses array.
In figure：Optical transceiver end 1, reverse manipulator end 2, the first signal input unit 11, laser instrument 12, the first optics day
Line 13, semi-transparent semi-reflecting lens 131, collimating mirror 132, the first photodiode 14, the first signal processing unit 15, Turbulence Media 21,
Transmitting light wave 22, reflection echo 23, reverse manipulator 31, micro- reflector array 311, pixelation spatial light modulator 312, the
Binary signal input block 32, the second optical antenna 33, the second photodiode 34, secondary signal processing unit 35, micro- corner reflection
Device unit 3111, micro- lenses array 312, micro- opal lens unit 3121, reflecting mirror 3122.
Specific embodiment
A kind of reverse modulation FSO system based on pseudo conjugation reflector that this utility model is proposed
System includes optical transceiver end and reverse manipulator end.Wherein, optical transceiver end includes light emission module, the first photo-detector mould
Block；The reverse manipulator end includes the second photo-detector module, reverse modulator block.
A kind of reverse modulation free-space optical communication system based on pseudo conjugation reflector is by optical transceiver end 1 and inverse
Constitute to manipulator end 2.Light emission module includes the first signal input unit 11, laser instrument 12 and the first optical antenna 13.Its
In, the first optical antenna 13 includes semi-transparent semi-reflecting lens 131 and collimating mirror 132.First signal input unit 11 adopts directly modulation
Mode is launched to reverse manipulator end 2 through the first optical antenna 13 driving laser instrument 12, optical signal.First photo-detector mould
Block includes the first shared optical antenna 13, the first photodiode 14 and the first signal processing unit 15.First optical antenna
13 receive the optical signal from reverse manipulator end 2, and focus in the photosensitive region of first photodiode 14, first
Photodiode 14 then converts optical signals to the signal of telecommunication, and through the first signal processing unit 15 by the number entrained by the signal of telecommunication
According to recovering.Reverse modulator block is mainly made up of reverse manipulator 31 and secondary signal input block 32, wherein inversely
Manipulator 31 includes micro- reflector array 311 and pixelation spatial light modulator 312, by the light from optical transceiver end 1
Signal is modulated and its retrodirective reflection is gone back.Second photo-detector module includes the second optical antenna 33, the second photoelectricity two
Pole pipe 34 and secondary signal processing unit 35.Second optical antenna 33 receives the optical signal from optical transceiver end 1, and focuses on
In the photosensitive region of second photodiode 34, the second photodiode 34 then converts optical signals to the signal of telecommunication, and Jing
Secondary signal processing unit 35 is crossed by the data recovery entrained by the signal of telecommunication out.
Fig. 1 give also the forming process of pseudo conjugation echo.The transmitting light wave 22 that optical transceiver end 1 sends is being passed through
Phase place before Turbulence Media 21 is distortionless, but the phase place after Turbulence Media 21 has distortion.The micro- angles of light wave Jing are anti-
After 311 retrodirective reflection of transmitter array, the phase face of reflection echo 23 is by micro- corner reflector unit of micro- reflector array 311
The 3111 sub- phase faces for being divided into equal size and number, sub- phase face are centers with 22 phase face of reflecting light of same position
Rotational symmetric, this little phase face can obtain 23 phase face of stair-stepping reflection echo again by Turbulence Media 21.This
Stepped phase face has identical light intensity distribution character with the undistorted phase face of transmitting light wave 22, can obtain flicker free without drift
Echo-signal, the reverse modulation free-space optical communication system of " turbulent flow immunity " so as to obtaining.
Fig. 2 gives the two-dimensional structure of two kinds of typical pseudo conjugation reflectors.Fig. 2（a）It is micro- reflector array
311, it is a kind of pseudo conjugation reflector being made up of micro- corner reflector unit 3111.Fig. 2（b）It is micro- lenses array
312, a kind of pseudo conjugation reflector being made up of micro- opal lens unit 3121 and reflecting mirror 3122.Micro- reflector array
311 and the common ground of micro- lenses array 312 be, in the range of microarray unit, can to obtain approximate with incident light wave phase place
The reflection echo of conjugation.It may be noted that pseudo conjugation reflector also has other structures, protection of the present utility model is also should be regarded as
Scope.
Those skilled in the art can be obvious, and the above-mentioned general introduction of this utility model is not meant to elaborate of the present utility model every
One exemplary embodiment or each embodiment, easily this utility model is carried out it is various modification and form replace and not
Deviate spirit and scope of the present utility model.Accordingly, it is intended to make this utility model cover in appended claims and its wait
Effect technical scheme in the range of to modification of the present utility model, replacement and its equivalents.
Claims (3)
1. a kind of reverse modulation free-space optical communication system based on pseudo conjugation reflector, including optical transceiver end and inverse
To manipulator end, it is characterised in that：The optical transceiver end includes light emission module, the first photo-detector module；It is described reverse
Manipulator end includes the second photo-detector module, reverse modulator block；The light emission module includes the first signal input list
Unit, laser instrument and the first optical antenna, the first signal input unit drive laser instrument, optical signal Jing using reactance modulation system
Cross the first optical antenna to launch to reverse manipulator end；The first photo-detector module by the first shared optical antenna,
One photodiode and the first signal processing unit composition, the first optical antenna receive the optical signal from reverse manipulator end,
And focus in the first photodiode photosensitive region, the first photodiode then converts optical signals to the signal of telecommunication, and passes through
First signal processing unit by the data recovery entrained by the signal of telecommunication out；The second photo-detector module is by the second optics day
Line, the second photodiode and secondary signal processing unit composition, the second optical antenna receives the light from optical transceiver end to be believed
Number, and focus in the second photodiode photosensitive region, the second photodiode then converts optical signals to the signal of telecommunication, and Jing
Secondary signal processing unit is crossed by the data recovery entrained by the signal of telecommunication out；The reverse modulator block is by pseudo conjugation
Reflector, spatial light modulator and secondary signal input block composition, is modulated simultaneously to the optical signal from optical transceiver end
Its retrodirective reflection is gone back；The pseudo conjugation reflector is a kind of micro- retro-reflector array, can produce pseudo- phase place altogether
Yoke echo, can receive echo-signal not by atmospheric turbulance disturbing influence at optical transceiver end.
2. a kind of reverse modulation FSO system based on pseudo conjugation reflector according to claim 1
System, it is characterised in that：The available field of view angle of the reverse manipulator can be by using preposition opal camera lens, big visual angle imaging system
Unite to expand.
3. a kind of reverse modulation FSO system based on pseudo conjugation reflector according to claim 1
System, it is characterised in that：The reverse modulator block can adopt sheet type pseudo conjugation reflector and sheet type pixelation
Spatial light modulator is making.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620817270.6U CN206060768U (en) | 2016-07-28 | 2016-07-28 | A kind of reverse modulation free-space optical communication system based on pseudo conjugation reflector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620817270.6U CN206060768U (en) | 2016-07-28 | 2016-07-28 | A kind of reverse modulation free-space optical communication system based on pseudo conjugation reflector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206060768U true CN206060768U (en) | 2017-03-29 |
Family
ID=58379674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620817270.6U Expired - Fee Related CN206060768U (en) | 2016-07-28 | 2016-07-28 | A kind of reverse modulation free-space optical communication system based on pseudo conjugation reflector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206060768U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107592157A (en) * | 2017-08-30 | 2018-01-16 | 西安理工大学 | Correct the device and antidote of wavefront distortion during optics is inversely modulated |
| CN107911162A (en) * | 2017-10-31 | 2018-04-13 | 浙江大学 | The non-interfering full duplex space high speed communication apparatus of dicode type based on modulator |
| CN108712209A (en) * | 2018-03-01 | 2018-10-26 | 中国人民解放军战略支援部队航天工程大学 | Laser communication fast Acquisition alignment methods based on retro-reflective properties |
| CN109425921A (en) * | 2017-08-21 | 2019-03-05 | 徐伟科 | A kind of optical communication device based on corner reflection |
| CN111052503A (en) * | 2017-04-10 | 2020-04-21 | 维尔塞特公司 | Coverage area adjustment for accommodating satellite communications |
-
2016
- 2016-07-28 CN CN201620817270.6U patent/CN206060768U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111052503A (en) * | 2017-04-10 | 2020-04-21 | 维尔塞特公司 | Coverage area adjustment for accommodating satellite communications |
| CN111052503B (en) * | 2017-04-10 | 2021-06-29 | 维尔塞特公司 | Method and system for adapting coverage area adjustment for satellite communications |
| CN109425921A (en) * | 2017-08-21 | 2019-03-05 | 徐伟科 | A kind of optical communication device based on corner reflection |
| CN107592157A (en) * | 2017-08-30 | 2018-01-16 | 西安理工大学 | Correct the device and antidote of wavefront distortion during optics is inversely modulated |
| CN107592157B (en) * | 2017-08-30 | 2020-01-14 | 西安理工大学 | Device and method for correcting wave front distortion in optical reverse modulation |
| CN107911162A (en) * | 2017-10-31 | 2018-04-13 | 浙江大学 | The non-interfering full duplex space high speed communication apparatus of dicode type based on modulator |
| CN108712209A (en) * | 2018-03-01 | 2018-10-26 | 中国人民解放军战略支援部队航天工程大学 | Laser communication fast Acquisition alignment methods based on retro-reflective properties |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106452581B (en) | Reverse modulation free-space optical communication system based on pseudo conjugation reflector | |
| CN206060768U (en) | A kind of reverse modulation free-space optical communication system based on pseudo conjugation reflector | |
| CN104639243B (en) | The modulating system and its method for building up of LED visible light communication up-link | |
| CN103152099A (en) | Single-fiber bidirectional transmission system based on mode division multiplexing | |
| US8582936B2 (en) | Separating and combining single-mode and multimode optical beams | |
| CN107566037A (en) | Duplexing reverse modulation MRR free space laser communication FSO systems | |
| CN102611508B (en) | Quantum communication system integrating receiving and transmitting | |
| CN203838375U (en) | Single-fiber passive single-mode and multi-mode transmission converter and optical fiber transmission system | |
| CN108306679B (en) | Cat eye reverse modulator based on focal plane imbalance | |
| CN101446668A (en) | Light communication light receiver aerial in free-space | |
| CN106559134A (en) | MIMO formula space optical communication system and communication means | |
| CN106856414A (en) | Inversely modulate reply free space laser communication system in big visual field | |
| Kaur et al. | Recent trends in wireless and optical fiber communication | |
| CN206020657U (en) | A kind of R-T unit for scanning laser radar | |
| CN105807282A (en) | Modulating retro-reflector-based distance measurement and communication integrated device | |
| Raj et al. | A review–unguided optical communications: Developments, technology evolution, and challenges | |
| US9813158B2 (en) | Multimode elliptical core optical data transmission | |
| CN207423494U (en) | A kind of laser communication terminal vacuum test system | |
| CN105577281A (en) | FSO communication network system between mobile nodes | |
| CN102983904A (en) | Free space optical communication system based on modulation retroflector and communication method thereof | |
| CN110730038A (en) | Reverse modulation free space optical communication system based on orbital angular momentum | |
| Brown et al. | Experimental implementation of fiber optic bundle array wide FOV free space optical communications receiver | |
| Mendez et al. | A comparative study of underwater wireless optical communication for three different communication links | |
| CN106712845B (en) | High speed based on RSOA can amplify reverse modulation reflecting module and implementation method | |
| CN205123744U (en) | Optical transmission terminal and system that fiber channel bus is wireless |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190816 Address after: 310000 No. 80 Dangke Road, Guali Town, Xiaoshan District, Hangzhou City, Zhejiang Province Patentee after: Hechuang Interconnection (Hangzhou) Information Technology Co., Ltd. Address before: 311200 Xiaoshan District, Zhejiang City, the town of River Street Patentee before: Hangzhou Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170329 Termination date: 20200728 |