CN106385284A - Laser communication device and method for experiment teaching - Google Patents
Laser communication device and method for experiment teaching Download PDFInfo
- Publication number
- CN106385284A CN106385284A CN201610813738.9A CN201610813738A CN106385284A CN 106385284 A CN106385284 A CN 106385284A CN 201610813738 A CN201610813738 A CN 201610813738A CN 106385284 A CN106385284 A CN 106385284A
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- China
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- signal
- laser
- telecommunication
- hardware plate
- photomodulator
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Classifications
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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
- H04B10/50—Transmitters
- H04B10/501—Structural aspects
- H04B10/503—Laser transmitters
-
- 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
- H04B10/60—Receivers
- H04B10/66—Non-coherent receivers, e.g. using direct detection
Abstract
The invention discloses a laser communication device for experiment teaching, the device comprises a transmitting terminal and a receiving terminal, the transmitting terminal comprises a laser, a light modulator, a modulation module, a light amplifier and a first antenna, the receiving terminal comprises a second antenna, a photoelectric detector and a demodulation module, the laser emits a laser with constant intensity to the light modulator, the light emitted by the light modulator converts to a light signal modulated by a modulation module communication signal, the first antenna emits the light signal to an atmospheric channel, the second antenna of the receiving terminal receives the light signal from the atmospheric channel and collects the signal to the photoelectric detector, and the demodulation module restores an original digital signal emitted by the transmitting terminal from an electrical signal emitted by the photoelectric detector. In laser communication experiment teaching, when lateral comparison of various code modulation modes is needed to perform, the comparison can be realized through selecting and switching various different code modulation modes on a programmable hardware plate, the consistent of other experiment conditions can be guaranteed, the reliability of experimental data can be improved, extra hardware does not need to add, and hardware cost of the experiment can be reduced.
Description
Technical field
The invention belongs to the communications field is and in particular to a kind of laser communication gear for experimental teaching and laser communication side
Method.
Background technology
Atmospheric optical communication or free space optical communication technology originate from the sixties in last century, find it in Laser Devices
Afterwards, it was mainly focused on short-range military secrecy high-speed communication at that time.But in early seventies, after optical fiber occurs, optical fiber is low
Damage the superior function in broadband, and the ability of distance transmission, make people that the hope of development has been focused on wired optical transport.
The nineties initial stage, the research to space optical communication, rise again.This is mainly due to the development of optics and laser technology, makes
The price of components and parts greatly declines, and lasercom is likely to become another kind of access way reduced investment outlay.Particularly in recent years
Come, the demand of broadband access increases day by day.The mode breaking through this " bottleneck " is varied, but different technology is providing various uniquenesses
While performance, also it is necessarily accompanied with some limitation.In market is to the process of development in pluralism, to bandwidth, distance, throw
Money, provide business time etc. requirement, all because when, have larger difference because of ground, because of project, exactly develop in broadband access
Process in, lasercom, as a kind of new form, becomes the strong supplement of intelligent acess, wireless access and DSL,
It is taken seriously in application.
Atmosphere laser communication system is the carrier using laser as signal, by transmitting letter to the modulation of laser pulse
Breath, information of realizing exchanges.Because the wavelength of laser is in micron dimension or shorter, therefore there is very wide communication bandwidth, it is possible to provide
The high rate of information throughput.Laser is used for the Angle of beam divergence very little of communication, has anti-interference well and anti-intercepting and capturing performance,
The safety of communication system can be greatly enhanced, it also has small volume, advantage lightweight, low in energy consumption simultaneously.Therefore, swash
Light inter-satellite link is an ideal selection of Large Copacity high code check repeated link, is between second filial generation relay satellite system star
One of high-speed link.
There is the lasercom of various ways at present, internal modulation and external modulation two ways are had from modulation system, interior
Modulation refers to that load-modulate signal is carried out during laser generation, goes to change the vibration ginseng of laser instrument with modulated signal
Number, thus change laser output characteristic to realize modulating.External modulation mode is load-modulate signal after laser is formed, its tool
Body method is placement manipulator in the light path outside laser instrument, on the modulator plus modulation voltage, makes some physics of manipulator
There is corresponding change in characteristic, realize the amplitude to light carrier, frequency and phase place etc. and be modulated.Comparatively speaking, external modulation
Mode does not affect on laser instrument, is not limited by semiconductor device operating rate, higher than the modulation rate of internal modulation (about high
An order of magnitude), modulation bandwidth is wider.So, in following two-forty, jumbo optic communication and optical information processing application
In, external modulation mode is more paid attention to by people.
In teaching, by test-type external modulation laser communication gear, student is allowed in person to carry out multiple code modulation modes
Across comparison, all extremely important to the understanding of theoretical knowledge and reparation students ' practical ability to deepening student.Chinese patent
CN200820026338.4 discloses a kind of laser communication experimental instrument of external modulation mode transmission of analogue signal, comprises Laser emission
Machine and laser receiver, and sequentially install between laser transmitter and laser receiver polarizing plate, optical rotatory substance, inspection
Polaroid, is also equipped with magnet exciting coil on optical rotatory substance, and magnet exciting coil is provided with modulation amplifier, laser transmitter
Luminous intensity constant, the change of light intensity that laser receiver receives is determined by the curent change in magnet exciting coil, works as excitation wire
Audio electrical signal, the then light intensity that laser receiver receives and its output current and audio electrical signal Changing Pattern phase is inputted in circle
Like such that it is able to show the voice communication of laser, when this laser communication experimental instrument changes modulation system, circuit needs to do mutually to strain
Change.Laser communication experimental instrument technical scheme disclosed in this patent the disadvantage is that, change modulation system when, need change circuit,
For the across comparison experiment of multiple code modulation modes, horizontal stroke can be led to because circuit modification leads to hardware foundation condition to change
Inaccurate to comparing result, and the hardware cost tested and time cost are all higher.
Accordingly, it would be desirable to a kind of laser communication gear for experimental teaching and laser communication method, can be quick, inexpensive
Ground carries out the selection switching of different coding modulation system, meets the needs of multiple code modulation mode across comparison education experiments,
And accurate across comparison experimental result can be provided.
Content of the invention
In view of this, the embodiment of the present invention provides a kind of laser communication gear for experimental teaching and laser communication side
Method, in order to solve, faces in the teaching of laser communication experiment room, different coding modulation system across comparison result is inaccurate, and
And the hardware cost tested and all higher problem of time cost.
For solving above-mentioned technical problem, one aspect of the present invention provides a kind of laser communication gear for experimental teaching,
Including transmitting terminal and receiving terminal, described transmitting terminal includes laser instrument, photomodulator, modulation module, image intensifer and first day
Line,
Described receiving terminal includes the second antenna, photodetector and demodulation module, and laser instrument sends swashing of constant intensity
Light incides in photomodulator, is changed into the optical signal modulated by modulation module signal of communication from the laser of photomodulator outgoing,
Optical signals first antenna is launched to atmospheric channel, and the second antenna of receiving terminal receives described optical signal from atmospheric channel and receives
Collect to photodetector, the signal of telecommunication that demodulation module exports from photodetector restores the original figure letter that transmitting terminal sends
Number.
Preferably, the first computer of described modulation module sends digital signal to the first hardware plate, the first hardware plate root
It is compiled and modulates the generation signal of telecommunication according to selected code modulation mode, signal converter receives the first hardware plate output
The signal of telecommunication is translated into radiofrequency signal and exports to radio frequency signal amplifiers, and radiofrequency signal is amplified to by radio frequency signal amplifiers
The required proper strength of photomodulator work simultaneously exports to photomodulator as signal of communication.
Preferably, the electric signal transducer of described demodulation module receives the signal of telecommunication of photodetector output and is converted into
The required proper strength of second hardware plate work, the second hardware plate receives the signal of telecommunication of electric signal transducer output and according to selection
Code modulation mode be demodulated and decode, second computer from second hardware plate obtain decoding after digital signal, thus
Obtain the raw digital signal that transmitting terminal sends.
Preferably, described laser instrument is the laser instrument with tail optical fiber, and described photomodulator is that the light with tail optical fiber is adjusted
Device processed.
Preferably, the first described hardware plate and the second hardware plate synchronously select identical code modulation mode to carry out work
Make.
Another aspect of the present invention provides a kind of laser communication method, including：
First computer exports the digital signal needing to send to the first hardware plate；
First hardware plate is compiled according to selected code modulation mode and modulates the generation signal of telecommunication；
The signal of telecommunication is converted into radiofrequency signal output；
Second hardware plate receives the signal of telecommunication and is demodulated according to the code modulation mode selecting and decodes；
Digital signal after the second hardware plate obtains decoding for the second computer.
Preferably, the described signal of telecommunication is converted into radiofrequency signal output, also includes：
Signal converter receives the signal of telecommunication of the first hardware plate output and is translated into radiofrequency signal；
The radiofrequency signal of radio frequency signal amplifiers receipt signal converter output is simultaneously amplified to photomodulator work institute
The proper strength needing；
Radiofrequency signal after amplifying is exported to photomodulator by radio frequency signal amplifiers as signal of communication.
Preferably, the described signal of telecommunication is converted into radiofrequency signal output, also includes：
Laser instrument with tail optical fiber sends the laser light incident of constant intensity in photomodulator；
It is changed into the optical signal of rf-signal modulation from the laser of photomodulator outgoing；
Described optical signal is amplified to the intensity needed for optic communication through image intensifer.
Preferably, the described signal of telecommunication is converted into radiofrequency signal output, also includes：
, by the optical signal receiving, through optical fiber input to photodetector, photodetector is according to optical signal for second antenna
Intensity export respective intensities the signal of telecommunication；
Electric signal transducer receives the signal of telecommunication of photodetector output and converts it into needed for the second hardware plate work
Proper strength.
Preferably, described first hardware plate and described second hardware plate synchronously select identical code modulation mode to carry out work
Make.
Using technique scheme, the present invention at least can obtain following technique effects：
In laser communication experiment teaching, when needing the across comparison carrying out multiple code modulation modes, by compiling
The selection that journey hardware plate carries out multiple different coding modulation can achieve consistent, the increasing it is ensured that other experiment conditions with switching
Add the reliability of experimental data；Do not need to increase extra hardware, reduce the hardware cost of experiment；Employ with tail optical fiber
Laser instrument and the manipulator with tail optical fiber, reduce the preparation of light be aligned aspect, improve conventional efficient, reduce experiment
Time cost.
Brief description
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to institute in embodiment of the present invention description
Need use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only the present invention some enforcement
Example, for those of ordinary skill in the art, on the premise of not paying creative work, can also be implemented according to the present invention
The content of example and these accompanying drawings obtain other accompanying drawings.
Fig. 1 is the Organization Chart of the laser communication gear for experimental teaching of the present invention；
Fig. 2 is the flow chart of the laser communication method for experimental teaching of the present invention.
Specific embodiment
For make present invention solves the technical problem that, the technical scheme that adopts and the technique effect that reaches clearer, below
By combine accompanying drawing the technical scheme of the embodiment of the present invention is described in further detail it is clear that described embodiment only
It is a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those skilled in the art exist
The every other embodiment being obtained under the premise of not making creative work, broadly falls into the scope of protection of the invention.
Further illustrate technical scheme below in conjunction with the accompanying drawings and by specific embodiment.Need explanation
Be, embodiments of the invention, by a kind of for the laser communication gear of experimental teaching as a example, technical scheme is carried out
Illustrate, but not in this, as restriction.Those skilled in the art can understand, proposed by the invention is sharp for experimental teaching
Optical communication equipment, in addition to for experimental teaching, can also be widely used in other same or like fields, and obtain similar
Technique effect.
Fig. 1 is the Organization Chart of the laser communication gear being used for experimental teaching described in the present embodiment.
Fig. 2 is the flow chart of the laser communication method being used for experimental teaching described in the present embodiment.
Reference Fig. 1, a kind of laser communication gear for experimental teaching, including transmitting terminal 10 and receiving terminal 20, described
Transmitting terminal 10 includes laser instrument 101, photomodulator 102, modulation module 11, image intensifer 103 and first antenna 108, described
Receiving terminal 20 includes the second antenna 201, photodetector 202 and demodulation module 21, and laser instrument 101 sends the laser of constant intensity
Incide in photomodulator 102, be changed into being modulated by the signal of communication of modulation module 11 from the laser of photomodulator 102 outgoing
Optical signal, optical signals first antenna 108 is launched to atmospheric channel 30, and the second antenna 201 of receiving terminal 20 connects from atmospheric channel
Receive described optical signal and collect to photodetector 202, described optical signal is converted into the signal of telecommunication simultaneously by photodetector 202
It is transferred to demodulation module 21, it is former that the signal of telecommunication that demodulation module 21 exports from photodetector 202 restores that transmitting terminal 10 sends
Beginning digital signal, described transmitting terminal 10 modulation module 11 includes the first computer 104, the first hardware plate 105, signal converter
106 and radio frequency signal amplifiers 107, described demodulation module 21 includes electric signal transducer 203, the second hardware plate 204 and
Two computers 205, the first described hardware plate 105 and the second hardware plate 204 are programmable hardware plate, the first hardware plate 105
Selection and the switching of multiple different coding modulation all can be carried out with the second hardware plate 204.
The output port of the first computer 104 is connected with the input port of the first hardware plate 105, the first hardware plate 105
Output port be connected with the input port of signal converter 106, the output port of signal converter 106 and radiofrequency signal are put
The input port of big device 107 is connected, and output port connection photomodulator 102 signal of communication of radio frequency signal amplifiers 107 is defeated
Inbound port, the first computer 104 exports the digital signal needing to send to the first hardware plate 105, the first hardware plate 105 basis
Selected code modulation mode is compiled and modulates the generation signal of telecommunication, and it is defeated that signal converter 106 receives the first hardware plate 105
The signal of telecommunication that goes out simultaneously is translated into radiofrequency signal, the radio frequency letter of radio frequency signal amplifiers 107 receipt signal converter 106 output
Number and be amplified to photomodulator 102 and worked required proper strength, radio frequency signal amplifiers 107 will amplify after radio frequency letter
Number export to photomodulator 102 as signal of communication.
The input port of electric signal transducer 203 is connected with the output port of photodetector 202, electric signal transducer
203 output port is connected with the input port of the second hardware plate 204, and the output port of the second hardware plate 204 and second is counted
The input port of calculation machine 205 is connected, and electric signal transducer 203 receives the signal of telecommunication of photodetector 202 output and will convert
The proper strength signal of telecommunication needed for becoming the second hardware plate 204 to work, the second hardware plate 204 receives electric signal transducer 203 and exports
The signal of telecommunication and be demodulated and decode according to the code modulation mode selecting, second computer 205 obtains from the second hardware plate 204
Take the digital signal after decoding, thus obtaining the raw digital signal that transmitting terminal 10 sends.
Described laser instrument 101 is the laser instrument with tail optical fiber.
Described photomodulator 102 is the photomodulator with tail optical fiber.
The first described hardware plate 105 and the synchronous selection identical code modulation mode of the second hardware plate 204 are operated,
First hardware plate 105 carries out the compiling of baseband signal and modulation, the second hardware plate 204 are demodulated and decode based on same coding
Modulation system.
Refer to Fig. 2, a kind of laser communication method for experimental teaching, including：
Step S101：First computer exports the digital signal needing to send to the first hardware plate；
Step S102：First hardware plate is compiled according to selected code modulation mode and modulates the generation signal of telecommunication；
Step S103：The signal of telecommunication is converted into radiofrequency signal and amplifies, as signal of communication；
Step S104：Signal of communication is converted into optical signal；
Step S105：Optical signals first antenna is launched, and is received by the second antenna；
Step S106：Optical signal is converted to the signal of telecommunication；
Step S107：Second hardware plate receives the signal of telecommunication and is demodulated according to the code modulation mode selecting and decodes；
Step S108：Digital signal after the second hardware plate obtains decoding for the second computer.
The described signal of telecommunication is converted into radiofrequency signal and amplifies, and as signal of communication, also includes：
Signal converter 106 receives the signal of telecommunication of the first hardware plate 104 output and is translated into radiofrequency signal；
The radiofrequency signal of radio frequency signal amplifiers 107 receipt signal converter 106 output is simultaneously amplified to photomodulator
The required proper strength of 102 work；
Radiofrequency signal after amplifying is exported to photomodulator 102 by radio frequency signal amplifiers 107 as signal of communication.
Described signal of communication is converted into optical signal, also includes：
Laser instrument 101 with tail optical fiber sends the laser light incident of constant intensity in photomodulator 102；
It is changed into the optical signal modulated by signal of communication from the laser of photomodulator 102 outgoing；
Described optical signal is amplified to the intensity needed for optic communication through image intensifer 103；
Photomodulator 102 is the photomodulator with tail optical fiber.
Described optical signal is converted into the signal of telecommunication, also includes：
Second antenna 201 by the optical signal receiving, through optical fiber input to photodetector 202, photodetector 202
Intensity according to optical signal exports the signal of telecommunication of respective intensities；
Electric signal transducer 203 receives the signal of telecommunication of photodetector 202 output and converts it into the second hardware plate 204
The required proper strength of work.
The first described hardware plate 105 and the second hardware plate 204 are programmable hardware plate, the first hardware plate 104 and
Two hardware plate 204 is synchronous to select identical code modulation mode to be operated.
Using technique scheme, this embodiment can use to obtain following technique effect：
In laser communication experiment teaching, when needing the across comparison carrying out multiple code modulation modes, by compiling
The selection that journey hardware plate carries out multiple different coding modulation can achieve consistent, the increasing it is ensured that other experiment conditions with switching
Add the reliability of experimental data；Do not need to increase extra hardware, reduce the hardware cost of experiment；Employ with tail optical fiber
Laser instrument and the manipulator with tail optical fiber, reduce the preparation of light be aligned aspect, improve conventional efficient, reduce experiment
Time cost.
All or part of content in the technical scheme that above example provides can pass through software programming or specialized hardware
Equipment is realized, and wherein software program is stored in the storage medium that can read, and storage medium is for example：Hard disk in computer, light
Disk or floppy disk；Special hardware can be ASIC, FPGA, SoC or the IP Core with related circuit.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore although being carried out to the present invention by above example
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other Equivalent embodiments more can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. a kind of laser communication gear is it is characterised in that include transmitting terminal and receiving terminal, described transmitting terminal include laser instrument,
Photomodulator, modulation module, image intensifer and first antenna.
Described receiving terminal includes the second antenna, photodetector and demodulation module, and the laser that laser instrument sends constant intensity enters
It is mapped in photomodulator, is changed into the optical signal modulated by modulation module signal of communication from the laser of photomodulator outgoing, light is believed
Number launched to atmospheric channel by first antenna, the second antenna of receiving terminal from atmospheric channel receive described optical signal and collect to
Photodetector, the signal of telecommunication that demodulation module exports from photodetector restores the raw digital signal that transmitting terminal sends.
2. equipment as claimed in claim 1 is it is characterised in that the first computer of described modulation module sends digital signal to the
One hardware plate, the first hardware plate is compiled and modulates the generation signal of telecommunication according to selected code modulation mode, and signal converts
The signal of telecommunication that device receives the first hardware plate output is translated into radiofrequency signal and exports to radio frequency signal amplifiers, radiofrequency signal
Radiofrequency signal is amplified to the required proper strength of photomodulator work exporting as signal of communication and adjusts to light by amplifier
Device processed.
3. equipment as claimed in claim 1 is it is characterised in that the electric signal transducer of described demodulation module receives photodetector
The signal of telecommunication of output is simultaneously converted into the required proper strength of the second hardware plate work, and the second hardware plate receives electric signal transducer
The signal of telecommunication of output is simultaneously demodulated according to the code modulation mode selecting and decodes, and second computer obtains from the second hardware plate
Digital signal after decoding, thus obtain the raw digital signal that transmitting terminal sends.
4. equipment as claimed in claim 1 is it is characterised in that described laser instrument is the laser instrument with tail optical fiber, described light
Manipulator is the photomodulator with tail optical fiber.
5. as described in claims 1 to 3 any claim equipment it is characterised in that the first described hardware plate and second hard
Part plate synchronously selects identical code modulation mode to be operated.
6. a kind of laser communication method is it is characterised in that include：
First computer exports the digital signal needing to send to the first hardware plate；
First hardware plate is compiled according to selected code modulation mode and modulates the generation signal of telecommunication；
The signal of telecommunication is converted into radiofrequency signal output；
Second hardware plate receives the signal of telecommunication and is demodulated according to the code modulation mode selecting and decodes；
Digital signal after the second hardware plate obtains decoding for the second computer.
7. method as claimed in claim 6, it is characterised in that the described signal of telecommunication is converted into radiofrequency signal output, also includes：
Signal converter receives the signal of telecommunication of the first hardware plate output and is translated into radiofrequency signal；
The radiofrequency signal of radio frequency signal amplifiers receipt signal converter output is simultaneously amplified to needed for photomodulator work
Proper strength；
Radiofrequency signal after amplifying is exported to photomodulator by radio frequency signal amplifiers as signal of communication.
8. method as claimed in claim 6, it is characterised in that the described signal of telecommunication is converted into radiofrequency signal output, also includes：
Laser instrument with tail optical fiber sends the laser light incident of constant intensity in photomodulator；
It is changed into the optical signal of rf-signal modulation from the laser of photomodulator outgoing；
Described optical signal is amplified to the intensity needed for optic communication through image intensifer.
9. method as claimed in claim 7, it is characterised in that the described signal of telecommunication is converted into radiofrequency signal output, also includes：
, by the optical signal receiving, through optical fiber input to photodetector, photodetector is strong according to optical signal for second antenna
The signal of telecommunication of degree output respective intensities；
Electric signal transducer receives the signal of telecommunication of photodetector output and converts it into the required conjunction of the second hardware plate work
Suitable intensity.
10. method as claimed in claim 6 is it is characterised in that described first hardware plate and described second hardware plate synchronously select
Identical code modulation mode is operated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610813738.9A CN106385284A (en) | 2016-09-09 | 2016-09-09 | Laser communication device and method for experiment teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610813738.9A CN106385284A (en) | 2016-09-09 | 2016-09-09 | Laser communication device and method for experiment teaching |
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| Publication Number | Publication Date |
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| CN106385284A true CN106385284A (en) | 2017-02-08 |
Family
ID=57935616
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610813738.9A Pending CN106385284A (en) | 2016-09-09 | 2016-09-09 | Laser communication device and method for experiment teaching |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412697A (en) * | 2018-11-06 | 2019-03-01 | 何玉亭 | A kind of optical-electric module for information one-way transmission |
| CN110971333A (en) * | 2019-11-28 | 2020-04-07 | 四川福方科技有限公司 | Two-way time synchronization system and method based on free space laser communication |
| CN113285754A (en) * | 2021-04-14 | 2021-08-20 | 西安理工大学 | Unidirectional information safety transmission system based on light and transmission method thereof |
| CN115996084A (en) * | 2023-03-22 | 2023-04-21 | 鹏城实验室 | Microwave laser fusion system, communication link switching method, device and medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2413441Y (en) * | 2000-03-30 | 2001-01-03 | 中国科学院上海光学精密机械研究所 | Radio laser communication terminal equipment |
| US6795655B1 (en) * | 2000-10-09 | 2004-09-21 | Meklyn Enterprises Limited | Free-space optical communication system with spatial multiplexing |
| CN204967822U (en) * | 2015-09-25 | 2016-01-13 | 中国计量学院 | Free space optical communications is tunable to be bare coherent detection OFDM device |
-
2016
- 2016-09-09 CN CN201610813738.9A patent/CN106385284A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2413441Y (en) * | 2000-03-30 | 2001-01-03 | 中国科学院上海光学精密机械研究所 | Radio laser communication terminal equipment |
| US6795655B1 (en) * | 2000-10-09 | 2004-09-21 | Meklyn Enterprises Limited | Free-space optical communication system with spatial multiplexing |
| CN204967822U (en) * | 2015-09-25 | 2016-01-13 | 中国计量学院 | Free space optical communications is tunable to be bare coherent detection OFDM device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109412697A (en) * | 2018-11-06 | 2019-03-01 | 何玉亭 | A kind of optical-electric module for information one-way transmission |
| CN110971333A (en) * | 2019-11-28 | 2020-04-07 | 四川福方科技有限公司 | Two-way time synchronization system and method based on free space laser communication |
| CN113285754A (en) * | 2021-04-14 | 2021-08-20 | 西安理工大学 | Unidirectional information safety transmission system based on light and transmission method thereof |
| CN115996084A (en) * | 2023-03-22 | 2023-04-21 | 鹏城实验室 | Microwave laser fusion system, communication link switching method, device and medium |
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