CN107707308B - High reliability space division multiplexing laser communication antenna under the conditions of dynamic rotary - Google Patents
High reliability space division multiplexing laser communication antenna under the conditions of dynamic rotary Download PDFInfo
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- CN107707308B CN107707308B CN201710883869.9A CN201710883869A CN107707308B CN 107707308 B CN107707308 B CN 107707308B CN 201710883869 A CN201710883869 A CN 201710883869A CN 107707308 B CN107707308 B CN 107707308B
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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
- H04B10/504—Laser transmitters using direct modulation
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
-
- 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
- H04B10/67—Optical arrangements in the receiver
-
- 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
- H04B10/69—Electrical arrangements in the receiver
- H04B10/691—Arrangements for optimizing the photodetector in the receiver
Abstract
High reliability space division multiplexing laser communication antenna under the conditions of dynamic rotary, belongs to wireless laser communication field, to solve problem of the prior art, data source connection communication laser one and telecommunication laser two；Outer layer optical transmitting antenna, internal layer optical transmitting antenna, internal layer optical receiver antenna and outer layer optical receiver antenna are sequentially coaxially arranged；Telecommunication laser one connects outer layer optical transmitting antenna by optical fiber, and fiber end face is located at the focal plane of outer layer optical transmitting antenna；Telecommunication laser two connects internal layer optical transmitting antenna by optical fiber, and fiber end face is located at the focal plane of internal layer optical transmitting antenna；High-speed photodetector one connects internal layer optical receiver antenna by multi-core optical fiber, and fiber end face is located at the focal plane of internal layer optical receiver antenna；High-speed photodetector two-way crosses multi-core optical fiber connection outer layer optical receiver antenna, and fiber end face is located at the focal plane of outer layer optical receiver antenna；Data storage connects high-speed photodetector one and high-speed photodetector two.
Description
Technical field
The present invention relates to high reliability laser communication antennas under the conditions of dynamic rotary, belong to wireless laser communication field.
Background technique
Wireless laser communication, which refers to, directly carries out data, language at space (land or the outer space) as carrier wave using laser beam
Sound, image information transmission a kind of technology, have strong antijamming capability, traffic rate high, small in size, light-weight and low in energy consumption etc.
Advantage.Laser space communication is mostly used to complete high-rate information transmission in current some rockets and station module, can be improved logical
Believe rate, decreases optical fiber wiring bring trouble.However existing laser space communication mostly uses the mould of point-to-point communication
Formula, once the optical fiber failure of connection antenna, communication will terminate completely, reliability is low.Emitted thus using conventional porous diameter porous
The received method of diameter can preferably solve integrity problem, but on the one hand will increase volume weight, secondly in certain dynamic rotaries
Under environment, in the case that such as load rotation, satellite is fixed, the transmitting terminal of multiple aperture will be unable to the switching for being directed at multiple aperture always
The problem of holding, equally existing reliability.
China Patent Publication No. is CN103311790A, and patent name is a kind of " adaptive optical of laser beam bidirectional transmit-receive
Fibre coupling or collimator control system ", as shown in Figure 1, including coupling or collimation lens 1, connection sleeve 2, location for optical fiber surface
Device 3, the first optical fiber 41, three fiber port circulators 5, the second optical fiber 42, third optical fiber 43, laser 6, photodetector 7, control
Platform 8 and high-voltage amplifier 9 processed, can be directly used for laser communication, optical signal are realized in the way of fiber coupling to antenna
Coupling efficiency can be improved using the method for adaptive optic fiber coupling in bidirectional transmit-receive, patent.
However, the patent has that reliability is low.Since optical fiber is the optical fiber by glass-pulling, in bending angle
Spend that small or while being impacted is very fragile easy to break, and the first optical fiber 41 in the patent once fractures, and the communication of system will also be stood
When interrupt.
Summary of the invention
The present invention provides to solve the problems, such as that laser space communication system reliability is low in existing cabin, volume weight is big
High reliability laser communication antenna under the conditions of a kind of dynamic rotary.
The present invention adopts the following technical scheme that:
High reliability laser communication antenna under the conditions of dynamic rotary comprising telecommunication laser one, telecommunication laser two, number
According to source, outer layer optical transmitting antenna, internal layer optical transmitting antenna, internal layer optical receiver antenna, outer layer optical receiver antenna, high speed
Photodetector one, high-speed photodetector two, data storage and multi-core optical fiber；It is characterized in that data source be separately connected it is logical
Believe laser one and telecommunication laser two；Outer layer optical transmitting antenna, internal layer optical transmitting antenna, internal layer optical receiver antenna and
Outer layer optical receiver antenna is sequentially coaxially arranged；Telecommunication laser one connects outer layer optical transmitting antenna, optical fiber end by optical fiber
Face is located at the focal plane of outer layer optical transmitting antenna；Telecommunication laser two connects internal layer optical transmitting antenna, light by optical fiber
Fine end face is located at the focal plane of internal layer optical transmitting antenna；High-speed photodetector one connects internal layer optics by multi-core optical fiber
Receiving antenna, fiber end face are located at the focal plane of internal layer optical receiver antenna；High-speed photodetector two-way crosses multi-core optical fiber
Outer layer optical receiver antenna is connected, fiber end face is located at the focal plane of outer layer optical receiver antenna；Data storage connects respectively
Connect high-speed photodetector one and high-speed photodetector two.
Negative convergence lens one, positive convergence lens one, the recessed axial cone mirror of circle is sequentially coaxially arranged in the outer layer optical transmitting antenna
One and circular convex shaft axicon lens one；Negative collimation lens one and positive collimation lens one is sequentially coaxially arranged in the internal layer optical transmitting antenna；
And the focal plane of internal layer optical transmitting antenna is between circular convex shaft axicon lens one and negative collimation lens one.
Circular convex shaft axicon lens two, the recessed axial cone mirror two of circle, two and of positive convergence lens is sequentially coaxially arranged in outer layer optical receiver antenna
Negative convergence lens two；Positive collimation lens one and negative collimation lens one is sequentially coaxially arranged in internal layer optical receiver antenna；And internal layer light
The focal plane of receiving antenna is learned between negative collimation lens one and circular convex shaft axicon lens two.
The telecommunication laser one and telecommunication laser two are 1550nm band laser, achievable internal modulation function.
The bore of the outer layer optical transmitting antenna is greater than the bore of the internal layer optical transmitting antenna, maintains bore
Difference.
The high-speed photodetector one and high-speed photodetector two are high speed indium gallium arsenic detector, using multi-core optical
Fine coupling high-speed photodetector.
The beneficial effects of the present invention are:
1) backup in point-to-point transmission channel is completed using the inside and outside nested antenna of space division multiplexing, specially internal layer antenna is sent out
Circular light spot is penetrated, outer layer antenna emits ring-shaped light spot, communication is spatially realized by way of space division multiplexing, and then improve system
System reliability.In addition volume and weight is reduced while improving reliability using inside and outside nested mode.
2) it is directed under certain dynamic rotary environment, such as telecommunication laser one, telecommunication laser two, data source, outer layer optics
Transmitting antenna, internal layer optical transmitting antenna form whole when surrounding outer layer optical transmitting antenna optical axis rotation, use sky
Communication reliability and high-transmission efficiency will be can guarantee by dividing the inside and outside nested antenna of multiplexing.And conventional method is due to the transmitting of multiple aperture
The problem of holding the change-over terminal that will be unable to be aligned multiple aperture always to equally exist reliability.
3) it is received using large area multi-core optical fiber connection high-speed photodetector and internal layer optical receiver antenna, outer layer optics
Antenna, it is ensured that light transmissioning efficiency under dynamic rotary environment.
The present invention waits the fields such as laser communications to be with a wide range of applications in station module and in rocket cabin.
Detailed description of the invention
Fig. 1 is the schematic diagram of the single channel transmitting-receiving laser system based on optical fiber in the prior art.
Fig. 2 is the schematic diagram of high reliability space division multiplexing laser communication antenna under the conditions of dynamic rotary of the invention.
Fig. 3 is the schematic diagram of heretofore described outer layer optical transmitting antenna.
Fig. 4 is the schematic diagram of heretofore described internal layer optical transmitting antenna.
Fig. 5 is the cross section of nested antenna optical path inside and outside axial symmetry of the invention.
Specific embodiment
It elaborates with reference to the accompanying drawing to the embodiment of the present invention.
As shown in Fig. 2, high reliability laser communication antenna under the conditions of dynamic rotary, including with lower component: telecommunication laser
One 10, telecommunication laser 2 11, data source 12, outer layer optical transmitting antenna 13, internal layer optical transmitting antenna 14, internal layer optics connect
Receive antenna 15, outer layer optical receiver antenna 16, high-speed photodetector 1, high-speed photodetector 2 18 and data storage
19。
Data source 12 passes through cable while connection communication laser 1 and telecommunication laser 2 11.
Outer layer optical transmitting antenna 13 and internal layer optical transmitting antenna 14 are arranged successively along optical axis and common optical axis is placed,
Inner one 13-1 of negative convergence lens of middle outer layer optical transmitting antenna 13, one 13-2 of positive convergence lens, recessed one 13-3 of axial cone mirror of circle, boss
One 13-4 common optical axis of axial cone mirror is arranged successively, as shown in Figure 3.Inner negative one 14-1 of collimation lens of internal layer optical transmitting antenna 14, just
One 14-2 common optical axis of collimation lens is arranged successively, as shown in Figure 4.And the focal plane of internal layer optical transmitting antenna 14 is located at circular convex shaft
Between one 14-1 of one 13-4 of axicon lens and negative collimation lens.Telecommunication laser 1 connects outer layer optical transmitting antenna by optical fiber
13, fiber end face is located at the focal plane of outer layer optical transmitting antenna 13.Telecommunication laser 2 11 connects internal layer light by optical fiber
Transmitting antenna 14 is learned, fiber end face is located at the focal plane of internal layer optical transmitting antenna 14.
Internal layer optical receiver antenna 15 and 16 common optical axis of outer layer optical receiver antenna and with outer layer optical transmitting antenna 13 and
The optical axis of internal layer optical transmitting antenna 14 is aligned, and is arranged successively, wherein the inner circular convex shaft axicon lens two of outer layer optical receiver antenna 16
16-4, recessed two 16-3 of axial cone mirror of circle, two 16-2 of positive convergence lens, two 16-1 common optical axis of negative convergence lens are arranged successively.Internal layer light
Learn inner positive one 15-2 of collimation lens of receiving antenna 15, one 15-1 common optical axis of negative collimation lens is arranged successively.Wherein internal layer optics connects
The focal plane of antenna 6 is received between negative one 15-1 of collimation lens and two 16-4 of circular convex shaft axicon lens.High-speed photodetector 1
Internal layer optical receiver antenna 15 is connected by multi-core optical fiber, fiber end face is located at the focal plane of internal layer optical receiver antenna 15.
High-speed photodetector 2 18 connects outer layer optical receiver antenna 16 by multi-core optical fiber, and fiber end face is located at the reception of outer layer optics
The focal plane of antenna 16.Data storage 19 connects high-speed photodetector 1 and high speed optoelectronic detection by cable simultaneously
Device 2 18.
The course of work of high reliability laser communication antenna is as follows under the conditions of dynamic rotary:
Modulated signal is loaded into telecommunication laser 1 and telecommunication laser 2 11 by cable by data source 12.After modulation
Two-way laser signal be transferred at antenna via optical fiber, first via signal successively passes through the negative meeting of outer layer optical transmitting antenna 13
Launch after poly- one 13-1 of lens, one 13-2 of positive convergence lens, recessed one 13-3 of axial cone mirror and one 13-4 of circular convex shaft axicon lens of circle.And
Second road signal collimates hair after one 14-2 of one 14-1 of negative collimation lens and positive collimation lens of internal layer optical transmitting antenna 14
It is shot out.After space propagation, first via signal successively pass through outer layer optical receiver antenna 16 two 16-4 of circular convex shaft axicon lens,
Recessed two 16-3 of axial cone mirror of circle, two 16-2 of positive convergence lens and two 16-1 of negative convergence lens converge to the end face of multi-core optical fiber, and pass through
The detection target surface that multi-core optical fiber is transferred to high-speed photodetector 2 18 is crossed, data receiver is completed.Second road signal is successively passed through
One 15-2 of positive collimation lens and one 15-1 of negative collimation lens of internal layer optical receiver antenna 15 converge to the end face of multi-core optical fiber, and
It is transferred to the detection target surface of high-speed photodetector 1 by multi-core optical fiber, completes data receiver.High-speed photodetector two
18 and high-speed photodetector 1 received data are transferred to data storage 19, complete data storage.
Fig. 5 is the cross section of the inside and outside nested antenna optical path of space division multiplexing of the invention, and two paths of signals spatially adopts circle
The transmission of the Pattern completion space division multiplexing of shape hot spot and ring-shaped light spot, can be improved reliability.
By theoretical calculation, outer layer communication link light transmissioning efficiency is constant under the conditions of dynamic rotary, and about 74%；Internal layer is logical
Believe that link light transmissioning efficiency is constant, about 80%.It can guarantee communication compared to the transmitting of conventional porous diameter and method of reseptance, the present invention
Reliability and high-transmission efficiency.
Claims (5)
1. high reliability laser communication antenna under the conditions of dynamic rotary comprising telecommunication laser one (10), telecommunication laser two
(11), data source (12), outer layer optical transmitting antenna (13), internal layer optical transmitting antenna (14), internal layer optical receiver antenna
(15), outer layer optical receiver antenna (16), high-speed photodetector one (17), high-speed photodetector two (18), data storage
Device (19) and multi-core optical fiber (20)；It is characterized in that
Data source (12) is separately connected telecommunication laser one (10) and telecommunication laser two (11)；
Outer layer optical transmitting antenna (13), internal layer optical transmitting antenna (14), internal layer optical receiver antenna (15) and outer layer optics
Receiving antenna (16) is sequentially coaxially arranged；
Telecommunication laser one (10) connects outer layer optical transmitting antenna (13) by optical fiber, and fiber end face is located at outer layer optical emitting
The focal plane of antenna (13)；Telecommunication laser two (11) connects internal layer optical transmitting antenna (14) by optical fiber, fiber end face
Focal plane positioned at internal layer optical transmitting antenna (14)；
High-speed photodetector one (17) connects internal layer optical receiver antenna (15) by multi-core optical fiber, and fiber end face is located at internal layer
The focal plane of optical receiver antenna (15)；High-speed photodetector two (18) connects outer layer optics by multi-core optical fiber and receives day
Line (16), fiber end face are located at the focal plane of outer layer optical receiver antenna (16)；
Data storage (19) is separately connected high-speed photodetector one (17) and high-speed photodetector two (18)；
The bore of the outer layer optical transmitting antenna (13) is greater than the bore of the internal layer optical transmitting antenna (14), maintains mouth
Diameter is poor；Outer layer optical transmitting antenna (13) emits ring-shaped light spot, and internal layer optical transmitting antenna (14) emits circular light spot；
Under dynamic rotary environment, telecommunication laser one (10), telecommunication laser two (11), data source (12), outer layer optical emitting
Antenna (13), internal layer optical transmitting antenna (14) form whole when surrounding outer layer optical transmitting antenna (13) optical axis rotation,
Modulated signal is loaded into telecommunication laser one (10) and telecommunication laser two (11) by data source (12)；Modulated two-way laser
Signal is transferred at antenna via optical fiber, and first via signal is successively launched after outer layer optical transmitting antenna (13)；The
Two road signals collimate after internal layer optical transmitting antenna (14) to be launched；After space propagation, first via signal is successively
The end face of multi-core optical fiber is converged to by outer layer optical receiver antenna (16), and is transferred to high speed optoelectronic detection by multi-core optical fiber
The detection target surface of device two (18) completes data receiver；Second road signal is successively passed through internal layer optical receiver antenna (15) and is converged to
The end face of multi-core optical fiber, and pass through the detection target surface that multi-core optical fiber is transferred to high-speed photodetector one (17), it completes data and connects
It receives；Received data are transferred to data storage by high-speed photodetector two (18) and high-speed photodetector one (17)
(19), data storage is completed.
2. high reliability laser communication antenna under the conditions of dynamic rotary according to claim 1, which is characterized in that described outer
Negative convergence lens one (13-1), positive convergence lens one (13-2), the recessed axial cone of circle is sequentially coaxially arranged in layer optical transmitting antenna (13)
Mirror one (13-3) and circular convex shaft axicon lens one (13-4)；Negative collimation lens is sequentially coaxially arranged in the internal layer optical transmitting antenna (14)
One (14-1) and positive collimation lens one (14-2)；And the focal plane of internal layer optical transmitting antenna (14) is located at circular convex shaft axicon lens one
Between (13-4) and negative collimation lens one (14-1).
3. high reliability laser communication antenna under the conditions of dynamic rotary according to claim 1, which is characterized in that outer light
It learns receiving antenna (16) and circular convex shaft axicon lens two (16-4), the recessed axial cone mirror two (16-3) of circle, positive convergence lens two is sequentially coaxially set
(16-2) and negative convergence lens two (16-1)；Positive collimation lens one (15-2) is sequentially coaxially arranged in internal layer optical receiver antenna (15)
With negative collimation lens one (15-1)；And the focal plane of internal layer optical receiver antenna (6) is located at negative collimation lens one (15-1) and circle
Between protruding shaft axicon lens two (16-4).
4. high reliability laser communication antenna under the conditions of dynamic rotary according to claim 1, which is characterized in that described logical
Believe laser one (10) and telecommunication laser two (11) is 1550nm band laser, completes internal modulation function.
5. high reliability laser communication antenna under the conditions of dynamic rotary according to claim 1, which is characterized in that the height
Fast photodetector one (17) and high-speed photodetector two (18) are high speed indium gallium arsenic detector, are coupled using multi-core optical fiber
High-speed photodetector.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710883869.9A CN107707308B (en) | 2017-09-26 | 2017-09-26 | High reliability space division multiplexing laser communication antenna under the conditions of dynamic rotary |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710883869.9A CN107707308B (en) | 2017-09-26 | 2017-09-26 | High reliability space division multiplexing laser communication antenna under the conditions of dynamic rotary |
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| CN107707308A CN107707308A (en) | 2018-02-16 |
| CN107707308B true CN107707308B (en) | 2019-10-11 |
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| CN111856890A (en) * | 2020-07-20 | 2020-10-30 | 中国科学院长春光学精密机械与物理研究所 | Focusing optical system and extreme ultraviolet light generating system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101282175A (en) * | 2008-05-16 | 2008-10-08 | 西安理工大学 | Free space MIMO optical communication system based on vertical demixing time space |
| CN101729216A (en) * | 2009-06-30 | 2010-06-09 | 香港应用科技研究院有限公司 | Optimized detection of multiple-antenna spatial multiplexing |
| CN103311790A (en) * | 2013-05-03 | 2013-09-18 | 中国科学院光电技术研究所 | Self-adaptive optical fiber coupler or collimator control system capable of bilaterally receiving and transmitting laser beams |
| CN105282630A (en) * | 2015-09-10 | 2016-01-27 | 深圳大学 | Novel vortex Dammann grating model and dynamic reconstructible routing system |
| CN103209022B (en) * | 2013-02-22 | 2016-05-25 | 江苏海虹电子有限公司 | Space optical coupling sniffer based on fiber array |
| CN106664194A (en) * | 2014-04-04 | 2017-05-10 | 尼克根合伙Ip有限责任公司 | System and method for communication using orbital angular momentum with multiple layer overlay modulation |
-
2017
- 2017-09-26 CN CN201710883869.9A patent/CN107707308B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101282175A (en) * | 2008-05-16 | 2008-10-08 | 西安理工大学 | Free space MIMO optical communication system based on vertical demixing time space |
| CN101729216A (en) * | 2009-06-30 | 2010-06-09 | 香港应用科技研究院有限公司 | Optimized detection of multiple-antenna spatial multiplexing |
| CN103209022B (en) * | 2013-02-22 | 2016-05-25 | 江苏海虹电子有限公司 | Space optical coupling sniffer based on fiber array |
| CN103311790A (en) * | 2013-05-03 | 2013-09-18 | 中国科学院光电技术研究所 | Self-adaptive optical fiber coupler or collimator control system capable of bilaterally receiving and transmitting laser beams |
| CN106664194A (en) * | 2014-04-04 | 2017-05-10 | 尼克根合伙Ip有限责任公司 | System and method for communication using orbital angular momentum with multiple layer overlay modulation |
| CN105282630A (en) * | 2015-09-10 | 2016-01-27 | 深圳大学 | Novel vortex Dammann grating model and dynamic reconstructible routing system |
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