CN108183750A - It is a kind of to divide bore laser communication optical transmitter and receiver based on optical phased array - Google Patents
It is a kind of to divide bore laser communication optical transmitter and receiver based on optical phased array Download PDFInfo
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- CN108183750A CN108183750A CN201711453961.8A CN201711453961A CN108183750A CN 108183750 A CN108183750 A CN 108183750A CN 201711453961 A CN201711453961 A CN 201711453961A CN 108183750 A CN108183750 A CN 108183750A
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- laser
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- light
- liquid crystal
- wave plate
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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
- H04B10/40—Transceivers
-
- 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
Abstract
It is a kind of to divide bore laser communication optical transmitter and receiver based on optical phased array, belong to technical field of laser communication, to solve prior art problem, it includes laser transmitting system and laser receiver system two parts composition, the laser transmitting system includes communication laser source, expands microscope group, transmitting polarizing beam splitter, emit the wave plate of λ/4, emission space optical modulator, transmitting liquid crystal polarization gratings and transmitting liquid crystal tunable wave plate；The laser receiver system includes spike filter, receives liquid crystal polarization gratings, receive liquid crystal tunable waveplate, receive polarizing beam splitter, receive the wave plate of λ/4, reception space optical modulator, detector；The present invention realizes wide-angle acquisition and tracking of the deflection control of transmitting light beam with receiving light beam using phased array device, simplify the structure of optical transmitter and receiver, alleviate volume, weight and power consumption, it is applicable to that bore to volume, weight, power consumption, the conditional free space laser communication occasion of shape, is divided to solve interference problem of the transmitting light to receiving terminal.
Description
Technical field
The invention belongs to technical field of laser communication, especially relate to a kind of divide bore laser based on optical phased array
Communicate optical transmitter and receiver.
Background technology
Free space laser communication refers to carry out between free space channel as information carrier using laser beam logical
Letter.Laser communication has many advantages, such as that rate is high, concealment is strong, strong antijamming capability, has in military and commercial communication wide
Wealthy application space.
Capture, tracking, aligning guide are directed toward used by existing free space laser communication optical transmitter and receiver as by motor, axis
It holds, the mechnical servo of the compositions such as shaft, code-disc, the servo volume is big, weight weight, and power consumption is also big, limits free space laser
The application range of communication optical transmitter and receiver, at the same it is mostly spherical using the optical transmitter and receiver shape of mechnical servo, it is unfavorable for certain special applications
Occasion.
The patent of invention of Patent No. " CN105356943A " " a kind of laser communication acquisition and tracking system and its is caught with side
Method " discloses a kind of communication acquisition and tracking system, and the system is by varifocal liquid crystal lens and liquid crystal optical phased array and liquid crystal light
Wedge is combined during the acquisition and tracking of laser space communication the thick capture detecting module of detection in real time and essence tracking detecting module
Reception power, according to the variation of received optical power, by the beam divergence angle of Zoom lens dynamic control laser communication system,
Self adaptive control is carried out to beam divergence angle capturing and tracking process.However, spectrophotometric result small with range is caught in technology presence
The problems such as difference, reception system is easily interfered by emission system.
Invention content
Prior art volume is big, spectrophotometric result is poor, reception system is easily asked by emission system interference in order to solve by the present invention
Topic, provides a kind of small-sized laser communication optical transmitter and receiver based on phased array.
The present invention solve technical problem scheme be：
It is a kind of to divide bore laser communication optical transmitter and receiver based on optical phased array, including laser transmitting system and laser pick-off
System two parts form, and the laser transmitting system includes communication laser source, expands microscope group, transmitting polarizing beam splitter, emits λ/4
Wave plate, emission space optical modulator, transmitting liquid crystal polarization gratings and transmitting liquid crystal tunable wave plate；The laser receiver system includes
Spike filter receives liquid crystal polarization gratings, receives liquid crystal tunable waveplate, receive polarizing beam splitter, receive the wave plate of λ/4, receive
Spatial light modulator and detector；
In laser transmitting system, communication laser source generates the linearly polarized laser of modulation, and direction of vibration passes through perpendicular to paper
It expands after microscope group expands, laser light incident is incident on transmitting to polarizing beam splitter is emitted after polarizing beam splitter internal reflection is emitted
On the wave plate of λ/4, circularly polarized light is become from linearly polarized light through the polarization state of the wave plate laser of transmitting λ/4, it is empty to be then incident to transmitting
Between on optical modulator, the angle and the angle of divergence of emission space light modulator modulates incident light, laser is again from emission space light modulation
The transmitting wave plate of λ/4 is reflexed on device, through the wave plate of transmitting λ/4, the polarization state of laser becomes linear polarization from circularly polarized light after transmission
Then light is incident to transmitting polarizing beam splitter while direction of vibration is parallel to paper, through being incident to after transmitting polarizing beam splitter
Emit liquid crystal polarization gratings, the direction of propagation of laser is incident to transmitting tunable waveplate after being modulated by wide-angle, changes the inclined of laser
Polarization state is emits to communication object after right-circularly polarized light；
In laser receiver system, communication laser first passes through spike filter and filters out stray light, liquid crystal polarized using receiving
Grating, incident angle are received liquid crystal polarization gratings and carry out coarse modulated, then laser light incident to reception liquid crystal tunable waveplate, liquid crystal
The polarization state of laser is converted into the linearly polarized light that direction of vibration is parallel to paper after tunable waveplate, and then laser light receives inclined
Shake optical splitter, then through receiving the wave plate of λ/4, and it is inclined from linearly polarized light to become circle for the polarization state of incident light after receiving the wave plate of λ/4
Shake light, and then laser enters reception space optical modulator, and reception space optical modulator carries out accurate adjustment to receiving communication laser angle
It makes and converges incident light, laser is reflected from reception space optical modulator and again through receiving the wave plate of λ/4 after being modulated, from connecing
It receives the transmission of the wave plate of λ/4 and retrodeviates the linearly polarized light that polarization state is become the vertical paper of direction of vibration from circularly polarized light, then laser enters and connects
Receive polarizing beam splitter, receive polarizing beam splitter inside reflect, last laser light incident on the detector, detector receive into
Communication ray is penetrated, and is translated into electric signal.
Beneficial effects of the present invention：Laser communication optical transmitter and receiver of a kind of point of bore based on phased array, using phased array device
It realizes wide-angle acquisition and tracking of the deflection control of transmitting light beam with receiving light beam, simplifies the structure of optical transmitter and receiver, alleviate body
Product, weight and power consumption, are applicable to, to volume, weight, power consumption, the conditional free space laser communication occasion of shape, divide mouth
Diameter solves interference problem of the transmitting light to receiving terminal.
Description of the drawings
Fig. 1 is that the present invention is a kind of divides bore laser communication optical transmitter and receiver emission system structural representation based on optical phased array
Figure.
Fig. 2 is that the present invention is a kind of divides bore laser communication optical transmitter and receiver to receive system structure signal based on optical phased array
Figure.
In figure：1st, communication laser source, 2, beam expanding lens, 3, transmitting polarizing beam splitter, 4, transmitting λ/4 wave plates, 5, emission space
Optical modulator, 6, transmitting liquid crystal polarization gratings, 7, transmitting liquid crystal tunable wave plate, 8, spike filter, 9, receive liquid-crystal polarized-light
Grid, 10, receive liquid crystal adjustable optical filter, 11, receive polarizing beam splitter, 12, receive the wave plate of λ/4,13, reception space light modulation
Device, 14, detector.
Specific embodiment
Below in conjunction with attached drawing, the present invention is described in further detail.
As shown in Figure 1, a kind of divide bore laser communication optical transmitter and receiver based on optical phased array, including laser transmitting system and
Laser receiver system two parts form, and the laser transmitting system includes communication laser source 1, expands microscope group 2, transmitting polarization spectro
Device 3, the transmitting wave plate 4 of λ/4, emission space optical modulator 5, transmitting liquid crystal polarization gratings 6 and transmitting liquid crystal tunable wave plate 7.
During optical transmitter and receiver transmitting communication laser, communication laser source 1 generates the linearly polarized laser of modulation, and direction of vibration is vertical
In paper, after expanding microscope group 2 and expanding, laser light incident is to polarizing beam splitter 3 is emitted, in 3 inside of transmitting polarizing beam splitter instead
The wave plate 4 of rear incident radiation λ/4 is penetrated, circularly polarized light is become from linearly polarized light through transmitting λ/4 wave plate, 4 polarization state, is then incident to
On emission space optical modulator 5, emission space optical modulator 5 modulates the angle and the angle of divergence of incident light, and laser is empty from transmitting again
Between the wave plate 4 of transmitting λ/4 is reflexed on optical modulator 5, through the wave plate 4 of transmitting λ/4, transmission retrodeviates polarization state and becomes line from circularly polarized light
Then polarised light is incident to transmitting polarizing beam splitter 3 while direction of vibration is parallel to paper, after transmitting polarizing beam splitter 3
Transmitting liquid crystal polarization gratings 6 are incident to, the direction of propagation is incident to transmitting tunable waveplate 7, changes polarization state after being modulated by wide-angle
To emit after right-circularly polarized light to communication object.
The laser receiver system include spike filter 8, receive liquid crystal polarization gratings 9, receive liquid crystal tunable waveplate 10,
It receives polarizing beam splitter 11, receive the wave plate 12 of λ/4, reception space optical modulator 13 and detector 14.
During laser receiver system receives communication laser, communication laser first passes through spike filter 8 and filters out stray light, then
By receiving liquid crystal polarization gratings 9, incident angle is received liquid crystal polarization gratings 9 and carries out coarse modulated, and then laser light incident is to connecing
Receive liquid crystal tunable wave plate 10, after liquid crystal tunable wave plate 10 polarization state of laser be converted into direction of vibration be parallel to paper line it is inclined
Shake light, and then laser light receives polarizing beam splitter 11, then through receiving the wave plate 12 of λ/4, incident after receiving the wave plate 12 of λ/4
The polarization state of light becomes circularly polarized light from linearly polarized light, and then laser enters reception space optical modulator 13, reception space light tune
Device 13 processed carries out accurate adjustment system and converging incident light to receiving communication laser angle, and laser is from reception space optical modulator after being modulated
13 reflections and again through receiving the wave plate 12 of λ/4 are become vibrating from receiving the transmission of wave plate 12 of λ/4 and retrodeviating polarization state from circularly polarized light
The linearly polarized light of the vertical paper in direction, then laser, which enters, receives polarizing beam splitter 11, is sent out inside polarizing beam splitter 11 receiving
Raw reflection, for last laser light incident on detector 14, detector 14 receives incoming communications light, and is translated into electric signal.
1 launch wavelength of communication laser source is 980nm, 1064nm.1330nm or 1550nm wave band.
The transmitting polarizing beam splitter 3 is with receiving polarizing beam splitter, extinction ratio>1000:1.
The emission space optical modulator 5 is phase type reflective spatial light modulator, can both realize that angle two dimension was accurate
Modulation, while beam divergence angle also can be changed；
The emission space optical modulator 5 is rad grades of 100 μ with 13 scanning resolution of reception space optical modulator, scans model
Enclose is ± 2.5 °；
The transmitting liquid crystal polarization gratings 6 can realize that light beam is inclined with receiving liquid crystal polarization gratings 9 by adjusting polarization state
Turn, scanning resolution is ± 2.5 °, reachable ± 45 ° of scanning range；
The transmitting liquid crystal tunable wave plate 7 can justify left circularly polarized light, dextrorotation with receiving optical liquid crystal tunable waveplate 10
Polarised light or linearly polarized light are converted into right-circularly polarized light；
8 spectral bandwidth of spike filter is less than 5nm, transmitance ＞ 95%.
The reception space optical modulator 13 is with the accurate modulation capability of the angle two dimension also energy with converging beam simultaneously
Power；
The detector 14 is four-quadrant APD detectors or face battle array APD detectors.
Claims (10)
1. a kind of divide bore laser communication optical transmitter and receiver based on optical phased array, it is characterized in that, including laser transmitting system and
Laser receiver system two parts form, and the laser transmitting system includes communication laser source (1), expands microscope group (2), transmitting polarization
Optical splitter (3), the transmitting wave plate (4) of λ/4, emission space optical modulator (5), transmitting liquid crystal polarization gratings (6) and emit liquid crystal can
Harmonic piece (7)；The laser receiver system includes spike filter (8), receives liquid crystal polarization gratings (9), receives liquid crystal tunable
Wave plate (10) receives polarizing beam splitter (11), receives the wave plate (12) of λ/4, reception space optical modulator (13) and detector (14)；
In laser transmitting system, communication laser source (1) generates the linearly polarized laser of modulation, and direction of vibration passes through perpendicular to paper
It expands after microscope group (2) expands, laser light incident enters to polarizing beam splitter (3) is emitted after polarizing beam splitter (3) internal reflection is emitted
It is mapped on the transmitting wave plate (4) of λ/4, circularly polarized light is become from linearly polarized light through the polarization state of wave plate (4) laser of transmitting λ/4, so
After be incident on emission space optical modulator (5), emission space optical modulator (5) modulate incident light angle and the angle of divergence, swash
Light reflexes to the transmitting wave plate (4) of λ/4 from emission space optical modulator (5) again, through the wave plate (4) of transmitting λ/4, laser after transmission
Polarization state linearly polarized light become from circularly polarized light while direction of vibration is parallel to paper, be then incident to transmitting polarizing beam splitter
(3), through transmitting liquid crystal polarization gratings (6) are incident to after transmitting polarizing beam splitter (3), the direction of propagation of laser is by wide-angle tune
Transmitting tunable waveplate (7) is incident to after system, changes the polarization state of laser to emit after right-circularly polarized light to communication object；
In laser receiver system, communication laser first passes through spike filter (8) and filters out stray light, using reception liquid-crystal polarized-light
Grid (9), incident angle are received liquid crystal polarization gratings (9) and carry out coarse modulated, then laser light incident to reception liquid crystal tunable waveplate
(10), the polarization state of liquid crystal tunable wave plate (10) laser afterwards is converted into the linearly polarized light that direction of vibration is parallel to paper, then
Laser light receives polarizing beam splitter (11), then through receiving the wave plate (12) of λ/4, the incident light after receiving the wave plate (12) of λ/4
Polarization state circularly polarized light is become from linearly polarized light, then laser enters reception space optical modulator (13), reception space light tune
Device (13) processed carries out accurate adjustment system and converging incident light to receiving communication laser angle, and laser is from reception space light modulation after being modulated
Device (13) reflects and again through receiving the wave plate (12) of λ/4, and polarization state is retrodeviated by circularly polarized light from wave plate (12) transmission of λ/4 is received
Become the linearly polarized light of the vertical paper of direction of vibration, then laser, which enters, receives polarizing beam splitter (11), is receiving polarization spectro
Reflects inside device (11), last laser light incident is on detector (14), detector (14) reception incoming communications light, and by its
It is converted into electric signal.
A kind of divide bore laser communication optical transmitter and receiver based on optical phased array 2. according to claim 1, which is characterized in that
Communication laser source (1) launch wavelength is 980nm, 1064nm, 1330nm or 1550nm wave band.
A kind of divide bore laser communication optical transmitter and receiver based on optical phased array 3. according to claim 1, which is characterized in that
The transmitting polarizing beam splitter (3) is with receiving polarizing beam splitter, extinction ratio>1000:1.
A kind of divide bore laser communication optical transmitter and receiver based on optical phased array 4. according to claim 1, which is characterized in that
The emission space optical modulator (5) is phase type reflective spatial light modulator, can both realize the accurate modulation of angle two dimension, together
When also can be changed beam divergence angle.
A kind of divide bore laser communication optical transmitter and receiver based on optical phased array 5. according to claim 1, which is characterized in that
The emission space optical modulator (5) is rad grades of 100 μ with reception space optical modulator (13) scanning resolution, and scanning range is
±2.5°。
A kind of divide bore laser communication optical transmitter and receiver based on optical phased array 6. according to claim 1, which is characterized in that
The transmitting liquid crystal polarization gratings (6) can realize that light beam deflects with receiving liquid crystal polarization gratings (9) by adjusting polarization state, sweep
It is ± 2.5 ° to retouch resolution ratio, reachable ± 45 ° of scanning range.
A kind of divide bore laser communication optical transmitter and receiver based on optical phased array 7. according to claim 1, which is characterized in that
The transmitting liquid crystal tunable wave plate (7) can be by left circularly polarized light, right-hand circular polarization with receiving optical liquid crystal tunable waveplate (10)
Light or linearly polarized light are converted into right-circularly polarized light.
A kind of divide bore laser communication optical transmitter and receiver based on optical phased array 8. according to claim 1, which is characterized in that
The spectral bandwidth of the spike filter (8) is less than 5nm, transmitance ＞ 95%.
A kind of divide bore laser communication optical transmitter and receiver based on optical phased array 9. according to claim 1, which is characterized in that
The reception space optical modulator (13) is with the accurate modulation capability of the angle two dimension also ability with converging beam simultaneously.
10. it is according to claim 1 it is a kind of divide bore laser communication optical transmitter and receiver based on optical phased array, feature exists
In the detector (14) is four-quadrant APD detectors or face battle array APD detectors.
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| CN201711453961.8A CN108183750B (en) | 2017-12-28 | 2017-12-28 | Divide aperture laser communication optical transmitter and receiver based on optics phased array |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109120341A (en) * | 2018-10-30 | 2019-01-01 | 宁波光舟通信技术有限公司 | A kind of signal transmission system |
| CN110971296A (en) * | 2019-11-12 | 2020-04-07 | 中国科学院西安光学精密机械研究所 | Space beacon-free optical communication terminal scanning method and system combining advanced aiming mechanism and precise pointing mechanism |
| CN113176554A (en) * | 2021-04-29 | 2021-07-27 | 中国科学院长春光学精密机械与物理研究所 | Light spot array generating structure and laser radar structure |
| CN114301536A (en) * | 2021-12-31 | 2022-04-08 | 长春理工大学 | Space laser communication system and method based on double-liquid-crystal polarization grating servo tracking |
| CN114337835A (en) * | 2022-01-10 | 2022-04-12 | 长春理工大学 | Space laser communication system and method based on three-liquid-crystal polarization grating servo tracking |
| CN114826414A (en) * | 2022-04-29 | 2022-07-29 | 长春理工大学 | Wide-range non-mechanical scanning phased array laser communication transmitting device |
| CN116805889A (en) * | 2023-08-21 | 2023-09-26 | 深圳市光为光通信科技有限公司 | Optical fiber transceiver module based on CPO technology |
| CN117220775A (en) * | 2023-11-07 | 2023-12-12 | 长春理工大学 | Multipath laser communication device, system, method and electronic equipment |
| CN113176554B (en) * | 2021-04-29 | 2024-05-17 | 中国科学院长春光学精密机械与物理研究所 | Light spot array generation structure and laser radar structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113176554A (en) * | 2021-04-29 | 2021-07-27 | 中国科学院长春光学精密机械与物理研究所 | Light spot array generating structure and laser radar structure |
| CN113176554B (en) * | 2021-04-29 | 2024-05-17 | 中国科学院长春光学精密机械与物理研究所 | Light spot array generation structure and laser radar structure |
| CN114301536B (en) * | 2021-12-31 | 2023-04-25 | 长春理工大学 | Space laser communication system and method based on dual-liquid crystal polarization grating servo tracking |
| CN114301536A (en) * | 2021-12-31 | 2022-04-08 | 长春理工大学 | Space laser communication system and method based on double-liquid-crystal polarization grating servo tracking |
| CN114337835A (en) * | 2022-01-10 | 2022-04-12 | 长春理工大学 | Space laser communication system and method based on three-liquid-crystal polarization grating servo tracking |
| CN114826414A (en) * | 2022-04-29 | 2022-07-29 | 长春理工大学 | Wide-range non-mechanical scanning phased array laser communication transmitting device |
| CN114826414B (en) * | 2022-04-29 | 2023-09-01 | 长春理工大学 | Large-range non-mechanical scanning phased array laser communication transmitting device |
| CN116805889A (en) * | 2023-08-21 | 2023-09-26 | 深圳市光为光通信科技有限公司 | Optical fiber transceiver module based on CPO technology |
| CN116805889B (en) * | 2023-08-21 | 2023-11-10 | 深圳市光为光通信科技有限公司 | Optical fiber transceiver module based on CPO technology |
| CN117220775A (en) * | 2023-11-07 | 2023-12-12 | 长春理工大学 | Multipath laser communication device, system, method and electronic equipment |
| CN117220775B (en) * | 2023-11-07 | 2024-02-02 | 长春理工大学 | Multipath laser communication device, system, method and electronic equipment |
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