CN113933939B - Laser communication coupling device and optical axis correction method based on same - Google Patents

Laser communication coupling device and optical axis correction method based on same Download PDF

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CN113933939B
CN113933939B CN202111144479.2A CN202111144479A CN113933939B CN 113933939 B CN113933939 B CN 113933939B CN 202111144479 A CN202111144479 A CN 202111144479A CN 113933939 B CN113933939 B CN 113933939B
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light
self
laser
optical
correcting
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CN113933939A (en
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王天洪
吕世猛
谢腾
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Shanghai Yaomu Technology Co ltd
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Shanghai Yaomu Technology Co ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/262—Optical details of coupling light into, or out of, or between fibre ends, e.g. special fibre end shapes or associated optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/34—Optical coupling means utilising prism or grating

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  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Communication System (AREA)

Abstract

The present disclosure provides a laser communication coupling device, which establishes an optical axis as a transmitting system, including: a first optical transceiver and a second optical transceiver for transmitting the self-calibration light and the communication laser light and receiving the communication laser light; the first optical mirror and the second optical mirror are used for collimating and transmitting the received communication laser to the light reflection assembly; the light reflection assembly is used for transmitting and separating the received communication laser and the self-correcting light through reflection; a third optical mirror for collimating the received light; a main telescope for expanding or contracting the light passing through the main telescope; and a beacon light emitting unit that emits beacon light. The laser communication coupling device can be used as a transmitting system to establish an optical axis and correct the optical axis, and can also be used as a receiving system to establish the optical axis and correct the optical axis. The present disclosure further provides an optical axis calibration method based on the laser communication coupling device, which can respectively perform optical axis calibration on the laser communication coupling device as a transmitting system, a receiving system and a transmitting and receiving system.

Description

Laser communication coupling device and optical axis correction method based on same
Technical Field
The disclosure belongs to the technical field of laser communication, and particularly relates to a laser communication coupling device and an optical axis correction method based on the laser communication coupling device.
Background
The laser communication coupling device is an integrated device of an optical fiber collimation system and an optical beam expanding system, is a free space laser communication receiving coupling device by using optical fibers, and mainly realizes the function of coupling and collecting free space light.
With the development of laser communication, the advantages of laser communication become more and more obvious, wherein laser emission light beam is narrow, the directivity is good, the antenna size is small, the information capacity is large, the power consumption is small, the size is small, the weight is light, the device is suitable for satellite communication, deep space is a good transmission medium which has no absorption and scattering, no loss and no interference to light waves, the device transmits information at the same speed, and the cost performance of optical communication is highest. However, since the laser beam is narrow and is susceptible to the influence of the atmosphere, satellite vibration and the like, the communication must be established by adopting an acquisition, tracking and aiming system to maintain an optical communication link (system is abbreviated as ATP). Communication laser divergence angles are typically very small (within 30urad), so the ATP system is required to have higher requirements (better than 30 urad). At present, after the whole communication ATP system is installed, the height of the center of a field of view of a tracking camera is ensured to be consistent with the height of the center of an optical axis of a communication light emitting and receiving module, and the optical path of the system is changed due to rail weightlessness, thermal deformation and other factors, so that a fixed deviation can be generated between beacon light and signal light, and the requirement of space laser communication cannot be met, and therefore, a high-precision system with a self-checking function is required to perform a real-time optical axis correction function of the system.
Because the communication rate of the laser communication system is completely the energy of the EDFA optical module, the energy of the EDFA cannot be very large, but the EDFA with different wavelengths can be used for combined emission to carry out multichannel optical communication, and the transmission rate is increased, therefore, a device for coupling multi-wavelength space light is needed, the coupling efficiency of the system cannot be influenced by requiring the multi-wavelength of the system to be at a focus position, and the problem of the whole transmission rate can be met.
According to the technical scheme, the parallel optical fibers are collimated through the collimating lens, then the collimated collimating system enters the autocollimation prism after being subjected to light splitting of the color separation sheet, enters the tracking system through the color separation sheet again after being subjected to autocollimation prism autocollimation, generates light spots in the tracking system, and then enters the detector through the collimated light spots to read the position of the mass center and finally feeds back the position of the mass center to the change condition of the collimating system. The prior art CN201110071279.9 has the following defects: first, the fiber combiner described in this patent is only suitable for specific short wavelength band (800nm-900nm), and cannot satisfy the existing communication wavelength around 1520nm-1580 nm; secondly, the tracking camera cannot adapt to the multi-wavelength imaging function, and is easy to generate a defocusing phenomenon, so that the tracking precision is influenced; thirdly, the aspheric collimating lens can not meet the function of simultaneously collimating the self-checking laser and the communication laser only by using a single wavelength; fourthly, the system can monitor the optical system of the transmitting and receiving positions in real time and has the capability of adjusting the optical axis at any time.
Disclosure of Invention
In order to solve at least one of the above technical problems, the present disclosure provides a laser communication coupling device and a method for optical axis self-correction based on the laser communication coupling device.
According to an aspect of the present disclosure, there is provided a laser communication coupling device, which establishes an optical axis as a transmission system, including:
a first optical transceiver unit that transmits communication laser light and self-calibration light to a first optical mirror;
a first optical mirror that reflects the received communication laser light and self-correcting light to a light reflection assembly;
the light reflection component separates the received self-correcting light and transmits the separated self-correcting light to the third optical mirror;
a third optic that reflects the received self-correcting light to a light reflecting component;
the light reflection component reflects the received self-correcting light to the imaging part;
an imaging section that receives the self-correcting light generation spot P1;
the communication laser emitted by the first light receiving and emitting part is emitted after being expanded by the main telescope;
a second optical transceiver unit that collimates the communication laser light and the self-calibration light to a second optical mirror;
adjusting the light reflection assembly to enable the optical axes of the communication laser received by the second light receiving and transmitting part to coincide with the optical axis of the communication laser transmitted by the first light receiving and transmitting part;
a second optical mirror that reflects the received communication laser light and self-correcting light to the light reflecting assembly;
the light reflection assembly separates the received communication laser and the self-correction light to generate the separated communication laser and the separated self-correction light, the separated self-correction light is reflected to the third optical mirror, and the separated communication laser is emitted after being expanded by the main telescope;
the third optical mirror reflects the received self-correcting light to the light reflection assembly, and the self-correcting light is reflected to the imaging part through the light reflection assembly to generate a light spot P2; and the number of the first and second groups,
and a beacon light emitting unit for adjusting the beacon light emitted from the beacon light emitting unit so that the optical axes of the first light transmitting/receiving unit, the second light transmitting/receiving unit, and the beacon light emitting unit coincide with each other.
According to at least one embodiment of this disclosure, the laser communication coupling device, the optical reflection subassembly includes: the device comprises a first spectroscope, a second spectroscope, a fast reflecting mirror and a tracking mirror.
According to this laser communication coupling device who discloses at least one embodiment, first light transceiver portion includes first self-correction light single mode fiber and first communication laser single mode fiber, first self-correction light single mode fiber with first communication laser single mode fiber forms side by side fiber array, second light transceiver portion includes second self-correction light single mode fiber and second communication laser single mode fiber, the second self-correction light single mode fiber with second communication laser single mode fiber forms side by side fiber array, first communication laser single mode fiber and second communication laser single mode fiber transmission and receipt communication laser, first self-correction light single mode fiber and second self-correction light single mode fiber transmission self-correction light.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the first beam splitter and the second beam splitter are dichroic mirrors.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the fast reflecting mirror is a coupling fast reflecting mirror.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the first optical mirror and the second optical mirror are reflective off-axis parabolic mirrors.
According to at least one embodiment of the present disclosure, the third optical mirror is a prism, and preferably, can collimate and reflect the received light.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the imaging section includes a tracking camera.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the main telescope is an afocal reflective beam expanding system, the magnification is 8 times, and the surface precision requirement of the system is better than 1/10 λ @632.8 nm.
According to the laser communication coupling device of at least one embodiment of this disclosure, the tracking mirror is composed of a piezoelectric ceramic motor.
According to the laser communication coupling device of at least one embodiment of the present disclosure, when the operating wavelength of the tracking mirror is 780nm-1700nm, the average reflectivity is greater than 96%, and the angular resolution RMS value is less than or equal to 0.2 μ rad.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the tracking mirror angle variation range is 15 mrad.
According to at least one embodiment of the present disclosure, the first beam splitter transmits a beacon light wavelength range of 780nm to 900nm, and the transmission light efficiency is greater than 90%.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the first beam splitter reflects the communication light in a wavelength range of 1520nm to 1580nm, and the reflected light efficiency is greater than 90%.
According to the laser communication coupling device of at least one embodiment of this disclosure, the clear aperture of the first beam splitter is 15 mm.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the light-passing surface shape deviation RMS value of the first beam splitter is better than 1/30 λ @632.8 nm.
According to at least one embodiment of the present disclosure, the prism is a corner cube prism.
In accordance with at least one embodiment of the present disclosure, the prism has a surface profile of the optically transmissive surface that is better than λ/10@632.8 nm.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the revolution accuracy of the prism is less than 3 ″.
According to the laser communication coupling device of at least one embodiment of this disclosure, the clear aperture of prism is 25.4 mm.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the aperture of the tracking lens of the tracking camera is 20 mm.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the system combined focal length of the tracking camera is 1000mm and 780nm-900 nm.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the tracking camera has a single pixel resolution of 5.5 urad.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the tracking detector single-pixel size of the tracking camera is 5.5 μm × 5.5 μm, and the windowing size is 1024pix × 1024 pix.
According to the laser communication coupling device of at least one embodiment of the present disclosure, when the operating wavelength of the fast reflecting mirror is 780nm to 1625nm, the average reflectivity is greater than 90%.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the angular resolution RMS value of the fast reflecting mirror is less than or equal to 1 μ rad.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the angle variation range of the fast reflecting mirror is ± 1.5 °.
According to at least one embodiment of the present disclosure, the first optical mirror has an optical aperture of 1/2 inches and a focal length of 1 inch.
According to the laser communication coupling device of at least one embodiment of the present disclosure, when the operating wavelength of the first optical mirror is 780nm to 1625nm, the average reflectivity is greater than 95%.
According to at least one embodiment of the present disclosure, the fiber core of the emission end of the first self-calibration optical single-mode fiber is 780HP fiber, the core diameter is 5.5um, and the outer coating is 125um fiber coating.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the light passing wavelength of the first self-calibration light single mode fiber is 780nm-970 nm.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the core diameter of the first communication laser single-mode fiber is 10.4um, the numerical aperture is 0.13, the outer coating is a fiber coating of 125um, and the light passing wavelength is 1520nm-1545 nm.
According to the laser communication coupling device of at least one embodiment of this disclosure, the center interval of first self-calibration optical single-mode fiber and first communication laser single-mode fiber is 125 um.
According to the laser communication coupling device of at least one embodiment of the present disclosure, when the operating wavelength of the second optical mirror is 780nm-1625nm, the average reflectivity is greater than 95%.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the optical aperture of the second optical mirror is 1 inch, and the focal length is 2 inches.
According to this laser communication coupling device of at least one embodiment of this disclosure, the transmission end optic fibre core of second self-calibration light single mode fiber is 780HP optic fibre, and the core footpath is 5.5um, and the overcoat is the optic fibre coating of 125um, and it is 780nm-970nm to lead to the light wavelength.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the core diameter of the second communication laser single-mode fiber is 4.3um, the numerical aperture is 0.35, the outer coating is a fiber coating of 125um, and the light passing wavelength is 1545nm-1570 nm.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the center interval between the second self-calibration optical single-mode fiber and the second communication laser single-mode fiber is 125 um.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the second spectroscope reflects light with a wavelength of 530nm-1540nm, transmits light with a wavelength of 1555nm-1565nm, and has an average reflectivity of 92% and an average transmittance of 93%.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device establishes an optical axis as a transmission system, and the first optical transceiver transmits communication laser light and self-correcting light to the first optical mirror, including: the first optical transceiver coaxially transmits the communication laser light and the self-calibration light to the first optical mirror at the same time at the focal point of the first optical mirror.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device establishes the optical axis as the transmitting system, the first optical mirror reflects the communication laser and the self-calibration light received to the light reflection subassembly, including: the first optical mirror reflects the received communication laser light and self-correcting light to the second beam splitter.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device establishes the optical axis as the transmitting system, and the light reflection component separates the received self-calibration light and transmits to the third optical mirror, including: the second beam splitter reflects the received communication laser and the self-correcting light to the first beam splitter, generates separated self-correcting light after being separated by the first beam splitter, and reflects the separated self-correcting light to the third optical mirror.
According to at least one embodiment of this disclosure, the laser communication coupling device, the third optical mirror reflects the received self-correcting light to the light reflection component, includes: the third optical mirror reflects the received self-correcting light to the first beam splitter.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device establishes an optical axis as an emission system, and the light reflection component reflects the received self-correcting light to the imaging section, including reflecting the self-correcting light to the imaging section by the first dichroic mirror.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device establishes an optical axis as a transmitting system, the second optical mirror reflects the received communication laser light and the self-calibration light to the optical reflection assembly, and the second optical mirror reflects the received communication laser light and the self-calibration light to the fast reflection mirror.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device establishes an optical axis as a transmitting system, adjusts the optical reflection assembly, and makes the optical axis of the communication laser received by the second optical transceiver coincide with the optical axis of the communication laser transmitted by the first optical transceiver, and includes: and adjusting the quick reflection mirror to enable the optical axes of the communication laser received by the second optical receiving and transmitting part to coincide with the optical axis of the communication laser transmitted by the first optical receiving and transmitting part.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device establishes an optical axis as a transmission system, and the second optical transceiver collimates and transmits communication laser light and self-correcting light to the second optical mirror, including: the second optical transceiver collimates and transmits the communication laser light and the self-calibration light to the second optical mirror at the focal point of the second optical mirror.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device establishes the optical axis as transmitting system, the light reflection subassembly separates the communication laser and the self-calibration light that receive, generates the communication laser after the separation and the self-calibration light after the separation to separate self-calibration light, and reflect the self-calibration light after the separation to the third optical mirror, the communication laser after the separation sends out after main telescope expands, include: the communication laser and the self-correcting light received by the fast reflecting mirror are reflected to the first beam splitter through the second beam splitter, are separated through the first beam splitter to generate separated self-correcting light and separated communication laser, the separated self-correcting light is reflected to the third optical mirror, the separated communication laser is reflected to the tracking mirror, and the tracking mirror is reflected and then is emitted through the main telescope.
According to at least one embodiment of the present disclosure, a laser communication coupling device as an emitting system for establishing an optical axis, the third optical mirror reflects the received self-calibration light to the light reflection assembly and reflects the received self-calibration light to the imaging portion through the light reflection assembly to generate a light spot P2, the laser communication coupling device includes: the third optical mirror collimates the received self-correcting light and reflects the collimated light to the first beam splitter, and the first beam splitter reflects the received self-correcting light again to the imaging unit, thereby generating a light spot P2.
According to at least one embodiment of this disclosure, a laser communication coupling device, as a transmission system, for correcting an optical axis, includes:
the first optical transceiver transmits self-calibration light and communication laser to the first optical lens;
the first optical mirror reflects the received self-correcting light and communication laser light to the light reflection assembly;
the light reflection assembly separates the received self-correcting light from the communication laser to generate separated self-correcting light and separated communication laser, reflects the separated self-correcting light to the third optical lens, and reflects the separated communication laser to the main telescope to be emitted after the beam of the main telescope is expanded;
the third optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the imaging part to generate a light spot P3;
the second optical transceiver collimates and transmits the self-correcting light and the communication laser to the second optical lens;
the second optical mirror reflects the received self-correcting light and communication laser light to the light reflection assembly;
the light reflection assembly separates the received self-correcting light from the communication laser to generate separated self-correcting light and separated communication laser, reflects the separated self-correcting light to the third optical lens, and reflects the separated communication laser to the main telescope to be expanded and then emits the expanded communication laser;
the third optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the imaging part to generate a light spot P4; and the number of the first and second groups,
comparing the P3 with the P1, based on the position deviation of the P3 and the P1, the light reflection assembly is adjusted to ensure that the position deviation of the P4 and the P2 is the same as the position deviation of the P3 and the P1, so that the optical axes of the communication laser emitted by the first light transceiving part and the second light transceiving part are overlapped, and the light reflection assembly is adjusted to ensure that the P3 and the beacon light are emitted again in an overlapped mode.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device corrects the optical axis as the transmission system, the first optical mirror reflects the self-correction light and the communication laser light received to the light reflection subassembly, includes:
the first optical mirror reflects the received self-calibration light and communication laser light to the second beam splitter.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device corrects the optical axis as the transmitting system, the light reflection subassembly separates received self-calibration light and communication laser, generates separated self-calibration light and separated communication laser, reflects separated self-calibration light to the third optical mirror, reflects separated communication laser to the main telescope and sends out after the main telescope expands the beam, including:
the second spectroscope reflects the received self-correction light and the communication laser to the first spectroscope, the first spectroscope separates the self-correction light from the communication laser to generate separated self-correction light and separated communication laser, the separated self-correction light is reflected to the third optical mirror, the separated communication laser is reflected to the tracking mirror, and the tracking mirror reflects the received communication laser to the main telescope for expansion and then sends out.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device is used as an emission system to correct an optical axis, the third optical mirror reflects the received self-correcting light to the light reflection assembly, and the third optical mirror collimates the received self-correcting light and then reflects the collimated self-correcting light to the first beam splitter.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device is used as an emitting system to correct an optical axis, the light reflection assembly reflects the received self-correction light to the imaging part to generate a light spot P3, and the laser communication coupling device comprises:
the first beam splitter reflects the received self-correcting light to the imaging section, and generates a light spot P3.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device serves as a transmitting system to correct an optical axis, and the second optical transceiver collimates and transmits the self-correction light and the communication laser to the second optical mirror;
according to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device corrects the optical axis as the transmission system, the second optical mirror reflects the self-correction light and the communication laser light received to the light reflection assembly, including:
the second optical mirror reflects the received self-correcting light and the communication laser light to the fast reflecting mirror.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device corrects the optical axis as the transmitting system, the light reflection subassembly separates the received self-calibration light from the communication laser, generates the separated self-calibration light and the separated communication laser, reflects the separated self-calibration light to the third optical mirror, reflects the separated communication laser to the main telescope and expands the beam to send out, including:
the fast reflection mirror reflects the received self-correction light and the communication laser to the second beam splitter, the second beam splitter reflects the received communication laser and the received self-correction light to the first beam splitter and then separates the communication laser and the communication laser, separated communication laser and separated self-correction light are generated, the separated self-correction light is reflected to the third optical mirror, the separated communication laser is reflected to the tracking mirror, and the tracking mirror reflects the received communication laser to the main telescope and emits the communication laser after expansion.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device corrects the optical axis as the transmission system, and the third optical mirror reflects the self-correcting light received to the light reflection assembly, includes:
the third optical lens collimates the received self-correcting light and reflects the collimated self-correcting light to the first light splitting mirror.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device is used as an emitting system to correct an optical axis, the light reflection assembly reflects the received self-correction light to the imaging part to generate a light spot P4, and the laser communication coupling device comprises:
the first beam splitter reflects the received self-correcting light to the imaging section, and generates a light spot P4.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device corrects an optical axis as a transmitting system, compares P3 with P1, and adjusts a light reflection component based on a positional deviation between P3 and P1 so that the positional deviation between P4 and P2 is the same as the positional deviation between P3 and P1, and so that optical axes of communication lasers transmitted by a first optical transceiver and a second optical transceiver coincide, the laser communication coupling device includes: comparing P3 with P1, the tracking mirror is adjusted based on the positional deviation between P3 and P1 so that the positional deviation between P4 and P2 is the same as the positional deviation between P3 and P1, so that the optical axes of the communication laser light emitted from the first optical transceiver unit and the second optical transceiver unit coincide, and the tracking mirror is adjusted so that P3 and the beacon light are emitted again in coincidence.
According to at least one embodiment of this disclosure, a laser communication coupling device, which establishes an optical axis as a receiving system, includes:
the coaxial communication laser and the beacon light emitted by the beacon light emitting part pass through the main telescope to the light reflection assembly;
the light reflection assembly separates the communication laser light and the beacon light, generates separated communication laser light and separated beacon light, reflects the separated beacon light to the imaging part, and reflects the separated communication laser light to the first optical mirror and the second optical mirror;
the imaging part receives the beacon light and generates a light spot P5;
the first optical mirror reflects the received communication laser to the first optical transceiver;
the second optical mirror reflects the received communication laser to the second optical transceiver;
the first light receiving and transmitting part transmits the self-correcting light to the first optical lens;
the first optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the third optical mirror;
the third optical mirror reflects the received self-correcting light to the light reflection assembly, and then the self-correcting light is reflected to the imaging part through the light reflection assembly to generate a light spot P6;
the second light receiving and transmitting part transmits the self-correcting light to the second optical lens;
the second optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the third optical mirror; and the number of the first and second groups,
the third optical mirror reflects the received self-correcting light to the light reflection assembly, and then gradually reflects the light to the imaging part through light reflection, so that a light spot P7 is generated.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device establishes the optical axis as receiving system, and the beacon light that communication laser and the transmission of beacon light emission portion is through main telescope to light reflection assembly, includes: the communication laser and the beacon light emitted by the beacon light emitting part pass through the main telescope to the tracking mirror.
According to a laser communication coupling apparatus of at least one embodiment of the present disclosure, a laser communication coupling apparatus establishes an optical axis as a receiving system, a light reflection component separates communication laser light and beacon light, generates separated communication laser light and separated beacon light, reflects the separated beacon light to an imaging section, and reflects the separated communication laser light to a first optical mirror and a second optical mirror, includes:
the tracking mirror reflects the received communication laser and the beacon light to the first beam splitter, the first beam splitter separates the received communication laser and the beacon light to generate the separated communication laser and the separated beacon light, the separated beacon light is reflected to the imaging part, the separated communication laser is reflected to the second beam splitter, the second beam splitter reflects the received communication laser to the first optical mirror, the second beam splitter reflects the received communication laser to the fast reflector, and the fast reflector reflects the received communication laser to the second optical mirror.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device establishes an optical axis as a receiving system, and the first optical mirror reflects received communication laser light to the first optical transceiver unit, including: the first optical mirror reflects the received communication laser light to the communication laser single mode fiber of the first optical transceiver.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device establishes an optical axis as a receiving system, and the second optical mirror reflects received communication laser light to the second optical transceiver section, including: the second optical mirror reflects the received communication laser light to the communication laser single mode fiber of the second optical transceiver.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device establishes the optical axis as receiving system, and first optical mirror reflects the self-calibration light received to the light reflection subassembly, includes: the first optical mirror reflects the received self-correcting light to the second beam splitter.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device establishes the optical axis as receiving system, and the light reflection subassembly reflects the self-calibration light of receipt to the third optical mirror, includes: the second beam splitter reflects the received self-correcting light to the first beam splitter, and the first beam splitter reflects the received self-correcting light to the third optical mirror.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device establishes an optical axis as a receiving system, and the third optical mirror reflects the received self-calibration light to the light reflection assembly and then reflects the self-calibration light to the imaging portion through the light reflection assembly to generate the light spot P6, including: the third optical mirror reflects the received self-correcting light to the first beam splitter, and then the self-correcting light is reflected to the imaging unit by the first beam splitter, so that a light spot P6 is generated.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device establishes the optical axis as receiving system, and the second optical mirror reflects the self-calibration light received to the light reflection subassembly, includes:
the second optic reflects the received self-correcting light to the fast reflecting mirror.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device establishes the optical axis as receiving system, and the light reflection subassembly reflects the self-calibration light of receipt to the third optical mirror, includes:
the fast reflection mirror reflects the received self-correcting light to the second beam splitter, the second beam splitter reflects the received self-correcting light to the first beam splitter, and the first beam splitter reflects the received self-correcting light to the third optical mirror.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device establishes an optical axis as a receiving system, and the third optical mirror reflects the received self-calibration light to the light reflection assembly, and then gradually reflects the light to the imaging portion through light reflection, so as to generate the light spot P7, including: the third optical mirror reflects the received self-correcting light to the first beam splitter, and then the self-correcting light is reflected to the imaging unit by the first beam splitter, so that a light spot P7 is generated.
According to at least one embodiment of this disclosure, a laser communication coupling device, which corrects an optical axis as a receiving system, includes:
the beacon light emitted by the communication laser and the beacon light emitting part passes through the main telescope to the light reflecting component;
the light reflection assembly separates the received communication laser light from the beacon light, generates separated beacon light and separated communication laser light, and reflects the separated beacon light to the imaging part to generate a light spot P8;
the first light receiving and transmitting part transmits the self-correcting light to the first optical lens;
the first optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the third optical mirror;
the third optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the imaging part to generate a light spot P9;
the second light receiving and transmitting part transmits the self-correcting light to the second optical lens;
the second optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection group reflects the received self-correcting light to the third optical mirror;
the third optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the imaging part to generate a light spot P10;
comparing P9 and P6, and adjusting the light reflection assembly based on the positional deviations of P9 and P6 so that the positional deviation of P10 and P7 is the same as the positional deviation of P9 and P6; and the number of the first and second groups,
the light reflection assembly was adjusted so that the positional deviation of P8 and P5 was the same as the positional deviation of P9 and P6.
According to the laser communication coupling device of at least one embodiment of this disclosure, laser communication coupling device corrects the optical axis as receiving system, and the beacon light that communication laser and beacon light emission portion transmitted is through main telescope to light reflection assembly, includes: the communication laser and the beacon light emitted by the beacon light emitting part pass through the main telescope to the tracking mirror.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device corrects an optical axis as a receiving system, the light reflection component separates received communication laser light and beacon light to generate separated beacon light and separated communication laser light, and reflects the separated beacon light to the imaging section to generate the spot P8, including: the tracking mirror reflects the received communication laser light and the received beacon light to the first beam splitter, and the first beam splitter separates the received communication laser light and the received beacon light to generate separated communication laser light and beacon light, and then reflects the beacon light to the imaging unit to generate a light spot P8.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device corrects the optical axis as receiving system, and the first optical mirror reflects the self-correcting light received to the light reflection subassembly, includes: the first optical mirror reflects the received self-correcting light to the second beam splitter.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device corrects the optical axis as the receiving system, and the light reflection subassembly reflects the self-correcting light of receipt to the third optical mirror, includes: the second beam splitter reflects the received self-correcting light to the first beam splitter, and the first beam splitter reflects the received self-correcting light to the third optical mirror.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device corrects the optical axis as the receiving system, and the third optical mirror reflects the received self-correcting light to the light reflection assembly, includes: the third optical mirror reflects the received self-correcting light to the first beam splitter.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device is used as a receiving system to correct an optical axis, and the light reflection assembly reflects the received self-correction light to the imaging part to generate a light spot P9, and the laser communication coupling device includes: the first beam splitter reflects the received self-correcting light to the imaging section, and generates a light spot P9.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device corrects an optical axis as a receiving system, and the second optical transceiver transmits self-correcting light to the second optical mirror, including: the self-calibration optical single-mode fiber of the second optical transceiver transmits the self-calibration light to the second optical mirror.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device corrects the optical axis as the receiving system, and the second optical mirror reflects the received self-correcting light to the light reflection assembly, includes: the second optic reflects the received self-correcting light to the fast reflecting mirror.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device corrects the optical axis as the receiving system, and the light reflection subassembly reflects the self-correcting light of receipt to the third optical mirror, includes: the fast reflection mirror reflects the received self-correcting light to the second beam splitter, the second beam splitter reflects the received self-correcting light to the first beam splitter, and the first beam splitter reflects the received self-correcting light to the third optical mirror.
According to the laser communication coupling device of at least one embodiment of this disclosure, the laser communication coupling device corrects the optical axis as the receiving system, and the third optical mirror reflects the received self-correcting light to the light reflection assembly, includes: the third optical mirror reflects the received light to the first beam splitter.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device is used as a receiving system to correct an optical axis, and the light reflection assembly reflects the received self-correction light to the imaging part to generate a light spot P10, and the laser communication coupling device includes: the first beam splitter reflects the received self-correcting light to the imaging section, and generates a light spot P10.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device corrects an optical axis as a receiving system, compares P9 and P6, and adjusts a fast-reflection mirror based on a positional deviation of P9 and P6 so that a positional deviation of P10 and P7 is the same as a positional deviation of P9 and P6, including: comparing P9 and P6, the light reflecting components are adjusted based on the positional deviations of P9 and P6 so that the positional deviations of P10 and P7 are the same as the positional deviations of P9 and P6.
According to the laser communication coupling device of at least one embodiment of the present disclosure, the laser communication coupling device as a receiving system corrects an optical axis, adjusts a light reflection member so that a positional deviation of P8 and P5 is the same as a positional deviation of P9 and P6, and includes: the tracking mirror is adjusted so that the positional deviation of P8 and P5 is the same as the positional deviation of P9 and P6.
According to still another aspect of the present disclosure, there is provided a method for optical axis correction based on a laser communication coupling device, the laser communication coupling device establishing an optical axis as a transmitting system, comprising:
the first optical transceiver transmits the communication laser light and the self-calibration light to the first optical lens;
the first optical mirror reflects the received communication laser light and the self-correcting light to the light reflecting component;
the light reflection component separates the received self-correcting light and transmits the separated self-correcting light to the third optical mirror;
the third optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the imaging part;
the imaging section receives the self-correcting light generation spot P1;
the communication laser emitted by the first light receiving and transmitting part is emitted after the telescope expands the beam;
the second optical transceiver collimates and transmits the communication laser and the self-correcting light to the second optical lens;
adjusting the light reflection assembly to enable the optical axes of the communication laser received by the second light receiving and transmitting part to coincide with the optical axis of the communication laser transmitted by the first light receiving and transmitting part;
the second optical mirror reflects the received communication laser light and the self-correcting light to the light reflecting component;
the light reflection assembly separates the received communication laser and the self-correction light to generate the separated communication laser and the separated self-correction light, the separated self-correction light is reflected to the third optical mirror, and the separated communication laser is emitted after being expanded by the main telescope;
the third optical mirror reflects the received self-correcting light to the light reflection assembly, and the self-correcting light is reflected to the imaging part through the light reflection assembly to generate a light spot P2; and the number of the first and second groups,
the beacon light emitted by the beacon light emitting unit is adjusted so that the optical axes of the light emitted by the first light transmitting/receiving unit, the second light transmitting/receiving unit, and the beacon light emitting unit coincide with each other.
According to at least one embodiment of the present disclosure, a method for optical axis correction based on a laser communication coupling device, which is used as an emission system to correct an optical axis, includes:
the first optical transceiver transmits self-calibration light and communication laser to the first optical lens;
the first optical mirror reflects the received self-correcting light and communication laser light to the light reflection assembly;
the light reflection assembly separates the received self-correcting light from the communication laser to generate separated self-correcting light and separated communication laser, reflects the separated self-correcting light to the third optical lens, and reflects the separated communication laser to the main telescope to be emitted after the beam of the main telescope is expanded;
the third optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the imaging part to generate a light spot P3;
the second optical transceiver collimates and transmits the self-correcting light and the communication laser to the second optical lens;
the second optical mirror reflects the received self-correcting light and communication laser light to the light reflection assembly;
the light reflection assembly separates the received self-correcting light from the communication laser to generate separated self-correcting light and separated communication laser, reflects the separated self-correcting light to the third optical lens, and reflects the separated communication laser to the main telescope to be expanded and then emits the expanded communication laser;
the third optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the imaging part to generate a light spot P4; and the number of the first and second groups,
comparing the P3 with the P1, based on the position deviation of the P3 and the P1, the light reflection assembly is adjusted to ensure that the position deviation of the P4 and the P2 is the same as the position deviation of the P3 and the P1, so that the optical axes of the communication laser emitted by the first light transceiving part and the second light transceiving part are overlapped, and the light reflection assembly is adjusted to ensure that the P3 and the beacon light are emitted again in an overlapped mode.
According to at least one embodiment of the present disclosure, a method for optical axis correction based on a laser communication coupling device, which establishes an optical axis as a receiving system, includes:
the communication laser and the beacon light emitted by the beacon light emitting part pass through the main telescope to the light reflecting component;
the light reflection assembly separates the communication laser light and the beacon light, generates separated communication laser light and separated beacon light, reflects the separated beacon light to the imaging part, and reflects the separated communication laser light to the first optical mirror and the second optical mirror;
the imaging part receives the beacon light and generates a light spot P5;
the first optical mirror reflects the received communication laser to the first optical transceiver;
the second optical mirror reflects the received communication laser to the second optical transceiver;
the first light receiving and transmitting part transmits the self-correcting light to the first optical lens;
the first optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the third optical mirror;
the third optical mirror reflects the received self-correcting light to the light reflection assembly, and then the self-correcting light is reflected to the imaging part through the light reflection assembly to generate a light spot P6;
the second light receiving and transmitting part transmits the self-correcting light to the second optical lens;
the second optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the third optical mirror; and the number of the first and second groups,
the third optical mirror reflects the received self-correcting light to the light reflection assembly, and then the self-correcting light is gradually reflected to the imaging part through light reflection, so that a light spot P7 is generated.
According to at least one embodiment of the present disclosure, a method for optical axis correction based on a laser communication coupling device, which corrects an optical axis as a receiving system, includes:
the beacon light emitted by the communication laser and the beacon light emitting part passes through the main telescope to the light reflecting component;
the light reflection assembly separates the received communication laser light from the beacon light, generates separated beacon light and separated communication laser light, and reflects the separated beacon light to the imaging part to generate a light spot P8;
the first light receiving and transmitting part transmits the self-correcting light to the first optical lens;
the first optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the third optical mirror;
the third optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the imaging part to generate a light spot P9;
the second light receiving and transmitting part transmits the self-correcting light to the second optical lens;
the second optical mirror reflects the received self-correcting light to the light reflecting component;
the light reflection group reflects the received self-correcting light to the third optical mirror;
the third optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the imaging part to generate a light spot P10;
comparing P9 and P6, and adjusting the light reflection assembly based on the positional deviations of P9 and P6 so that the positional deviation of P10 and P7 is the same as the positional deviation of P9 and P6; and the number of the first and second groups,
the light reflection assembly was adjusted so that the positional deviation of P8 and P5 was the same as the positional deviation of P9 and P6.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
Fig. 1 is a schematic structural diagram of a laser communication coupling device provided in accordance with an embodiment of the present disclosure.
Fig. 2 is a schematic flow chart of a method for establishing an optical axis by using a laser communication coupling device as a transmitting system according to an embodiment of the present disclosure.
Fig. 3 is a schematic flow chart of a method for correcting an optical axis by using a laser communication coupling device as an emitting system according to an embodiment of the present disclosure.
Fig. 4 is a schematic flow chart of a method for correcting an optical axis by using a laser communication coupling device as a receiving system according to an embodiment of the present disclosure.
FIG. 5 is a schematic flow chart of a method for correcting an optical axis by using a laser communication coupling device as a receiving system according to an embodiment of the present disclosure
Description of the reference numerals
100 laser communication coupling device
101 first light transmitting/receiving unit
102 first optical lens
103 light reflection assembly
104 third optical lens
105 image forming section
106 primary telescope
107 second light transmitting/receiving part
108 second optic
109 beacon light emitting unit
1011 first self-correcting optical single-mode fiber
1012 first communication laser single-mode fiber
1031 first spectroscope
1032 second beam splitter
1033 quick reflection mirror
1034 tracking mirror
1071 second self-correcting optical single-mode fiber
1072 second communication laser single mode fiber.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. Technical solutions of the present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Unless otherwise indicated, the illustrated exemplary embodiments/examples are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure may be practiced. Accordingly, unless otherwise indicated, features of the various embodiments may be additionally combined, separated, interchanged, and/or rearranged without departing from the technical concept of the present disclosure.
The use of cross-hatching and/or shading in the drawings is generally used to clarify the boundaries between adjacent components. As such, unless otherwise noted, the presence or absence of cross-hatching or shading does not convey or indicate any preference or requirement for a particular material, material property, size, proportion, commonality between the illustrated components and/or any other characteristic, attribute, property, etc., of a component. Further, in the drawings, the size and relative sizes of components may be exaggerated for clarity and/or descriptive purposes. While example embodiments may be practiced differently, the specific process sequence may be performed in a different order than that described. For example, two processes described consecutively may be performed substantially simultaneously or in reverse order to that described. In addition, like reference numerals denote like parts.
When an element is referred to as being "on" or "on," "connected to" or "coupled to" another element, it can be directly on, connected or coupled to the other element or intervening elements may be present. However, when an element is referred to as being "directly on," "directly connected to" or "directly coupled to" another element, there are no intervening elements present. For purposes of this disclosure, the term "connected" may refer to physically, electrically, etc., and may or may not have intermediate components.
The terminology used herein is for the purpose of describing particular embodiments and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, when the terms "comprises" and/or "comprising" and variations thereof are used in this specification, the presence of stated features, integers, steps, operations, elements, components and/or groups thereof are stated but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof. It is also noted that, as used herein, the terms "substantially," "about," and other similar terms are used as approximate terms and not as degree terms, and as such, are used to interpret inherent deviations in measured values, calculated values, and/or provided values that would be recognized by one of ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a laser communication coupling device provided in accordance with an embodiment of the present disclosure.
As shown in fig. 1, a laser communication coupling apparatus 100, which is used as a transmitting system to establish an optical axis, includes:
a first optical transceiver 101, the first optical transceiver 101 transmitting the communication laser light and the self-calibration light to the first optical lens;
a first optical mirror 102, the first optical mirror 102 reflecting the received communication laser light and self-correcting light to a light reflection component 103;
the light reflection component 103 separates the received self-correcting light and transmits the separated self-correcting light to the third optical mirror;
a third optical mirror 104, the third optical mirror 104 reflecting the received self-correcting light to the light reflecting component 103;
the light reflection member 103 reflects the received self-correcting light to the imaging section 105;
an imaging section 105 that receives the self-correcting light generation spot P1;
a main telescope 106, wherein the communication laser emitted by the first light receiving and transmitting part 102 is emitted after being expanded by the main telescope;
a second optical transceiver 107, the second optical transceiver 107 collimates the communication laser light and the self-calibration light to the second optical mirror;
adjusting the optical reflection unit 103 so that the optical axes of the communication laser light received by the second optical transceiver 107 and the communication laser light emitted by the first optical transceiver coincide;
a second optical mirror 108, the second optical mirror 108 reflecting the received communication laser light and self-correcting light to the light reflecting member;
the light reflection assembly 103 separates the received communication laser light from the self-correction light to generate separated communication laser light and separated self-correction light, and reflects the separated self-correction light to the third optical mirror 104, and the separated communication laser light is emitted after being expanded by the main telescope;
the third optical mirror 104 reflects the received self-correcting light to the light reflection assembly, and reflects the self-correcting light to the imaging part through the light reflection assembly 103 to generate a light spot P2; and the number of the first and second groups,
the beacon light emitting unit 109 adjusts the beacon light emitted from the beacon light emitting unit so that the optical axes of the first light transmitting/receiving unit 101, the second light transmitting/receiving unit 107, and the beacon light emitting unit 109 coincide with each other.
Wherein, the light reflection assembly 103 includes: a first beam splitter 1031, a second beam splitter 1032, a fast mirror 1033, and a tracking mirror 1034.
The first optical transceiver unit 101 includes a first self-calibration optical single-mode fiber 1011 and a first communication laser single-mode fiber 1012, and the second optical transceiver unit 107 includes a second self-calibration optical single-mode fiber 1071 and a second communication laser single-mode fiber 1072, where the communication laser single-mode fiber emits and receives communication laser light and the self-calibration optical single-mode fiber emits self-calibration light. The first self-correcting optical single-mode fiber 1011 and the first communication laser single-mode fiber 1012 form a side-by-side fiber array, and the second self-correcting optical single-mode fiber 1071 and the second communication laser single-mode fiber 1072 form a side-by-side fiber array.
The first and second dichroic mirrors 1031, 1032 are dichroic mirrors.
The fast mirror 1033 is a coupled fast mirror.
The first optical mirror 102 and the second optical mirror 108 are reflective off-axis parabolic mirrors.
The third optical mirror 104 is a prism, and preferably can collimate and reflect the received light.
Wherein the imaging section 105 includes a tracking camera.
Wherein, the main telescope 106 is an afocal reflective beam expanding system, the magnification is 8 times, and the surface precision requirement of the system is superior to 1/10 lambda @632.8 nm.
The tracking mirror 1034 is composed of a piezoelectric ceramic motor.
Wherein, when the working wavelength of the tracking mirror 1034 is 780nm-1700nm, the average reflectivity is more than 96%, and the angular resolution RMS value is less than or equal to 0.2 μ rad.
Wherein the angle variation range of the tracking mirror 1034 is 15 mrad.
The first spectroscope 1031 transmits the beacon light wavelength range 780nm-900nm, and the transmission light efficiency is greater than 90%.
Wherein the first spectroscope 1031 reflects the communication light in a wavelength range of 1520nm-1580nm with a reflection light efficiency of more than 90%.
Wherein, the aperture of the first spectroscope 1031 is 15 mm.
Wherein, the light-passing surface shape deviation RMS value of the first spectroscope 1031 is better than 1/30 lambda @632.8 nm.
Wherein, the prism is a pyramid prism.
Wherein, the surface shape of the light transmission surface of the prism is better than lambda/10 @632.8 nm.
Wherein the rotation precision of the prism is less than 3'.
Wherein, the clear aperture of prism is 25.4 mm.
Wherein, the aperture of the tracking lens of the tracking camera is 20 mm.
Wherein the system combined focal length of the tracking camera is 1000mm and 780nm-900 nm.
Wherein the tracking camera single pixel resolution is 5.5 urad.
Wherein, the tracking detector single pixel size of the tracking camera is 5.5 μm multiplied by 5.5 μm, and the windowing size is 1024pix multiplied by 1024 pix.
Wherein, when the working wavelength of the fast reflecting mirror 1033 is 780nm-1625nm, the average reflectivity is more than 90%.
Wherein, the angular resolution RMS value of the fast reflector 1033 is less than or equal to 1 μ rad.
Wherein, the angle variation range of the fast reflecting mirror 1033 is ± 1.5 °.
The first optic 102 has an optical aperture of 1/2 inches and a focal length of 1 inch.
Wherein, when the working wavelength of the first optical lens 102 is 780nm-1625nm, the average reflectivity is more than 95%.
Wherein, the transmitting end optic fibre core of first self-calibration light single mode fiber is 780HP optic fibre, and the core footpath is 5.5um, and the overcoat is 125 um's fiber coating.
The light passing wavelength of the first self-calibration light single-mode fiber is 780nm-970 nm.
The core diameter of the first communication laser single-mode fiber is 10.4um, the numerical aperture is 0.13, the outer coating is a 125um fiber coating, and the light passing wavelength is 1520nm-1545 nm.
Wherein, the center interval of first self-calibration light single mode fiber and first communication laser single mode fiber is 125 um.
Wherein, when the working wavelength of the second optical lens 108 is 780nm-1625nm, the average reflectivity is more than 95%.
The second optical lens 108 has an optical aperture of 1 inch and a focal length of 2 inches.
Wherein, the transmitting end fiber core of the second self-calibration light single mode fiber is 780HP fiber, the core diameter is 5.5um, the outer coating is 125um fiber coating, and the light passing wavelength is 780nm-970 nm.
The core diameter of the second communication laser single-mode fiber is 4.3um, the numerical aperture is 0.35, the outer coating is a 125um fiber coating, and the light passing wavelength is 1545nm-1570 nm.
Wherein, the center interval of the second self-calibration optical single-mode fiber and the second communication laser single-mode fiber is 125 um.
The second beam splitter 1032 reflects light with a wavelength of 530nm-1540nm, transmits light with a wavelength of 1555nm-1565nm, and has an average reflectivity of 92% and an average transmittance of 93%.
Wherein, the laser communication coupling device establishes the optical axis as transmitting system, and first light transceiver part transmission communication laser and self-calibration light are to first optical mirror, include: the first optical transceiver coaxially transmits the communication laser light and the self-calibration light to the first optical mirror at the same time at the focal point of the first optical mirror.
Wherein, laser communication coupling device establishes the optical axis as transmitting system, and first optical mirror reflects the communication laser and the self-calibration light that receive to light reflection assembly, includes: the first optical mirror reflects the received communication laser light and self-correcting light to the second beam splitter.
Wherein, laser communication coupling device establishes the optical axis as transmitting system, and the light reflection subassembly is launched to the third optical mirror after with the separation of the self-calibration light of receiving, includes: the second beam splitter reflects the received communication laser and the self-correcting light to the first beam splitter, generates separated self-correcting light after being separated by the first beam splitter, and reflects the separated self-correcting light to the third optical mirror.
Wherein the third optic reflects the received self-correcting light to the light reflecting assembly, comprising: the third optical mirror reflects the received self-correcting light to the first beam splitter.
The laser communication coupling device is used as an emitting system to establish an optical axis, and the light reflection component reflects the received self-correcting light to the imaging part, wherein the self-correcting light is reflected to the imaging part through the first dichroic mirror.
The laser communication coupling device is used as a transmitting system to establish an optical axis, the second optical mirror reflects the received communication laser and the self-correcting light to the light reflection assembly, and the second optical mirror reflects the received communication laser and the self-correcting light to the fast reflection mirror.
Wherein, laser communication coupling device establishes the optical axis as transmitting system, adjusts the light reflection module, makes the communication laser that second light receiving and dispatching portion received and the coincidence of the communication laser optical axis that first light receiving and dispatching portion launched, includes: and adjusting the quick reflection mirror to enable the optical axes of the communication laser received by the second optical receiving and transmitting part to coincide with the optical axis of the communication laser transmitted by the first optical receiving and transmitting part.
Wherein, the laser communication coupling device establishes the optical axis as transmitting system, and the collimation of second light transceiver part is launched communication laser and self-calibration light to the second optical mirror, includes: the second optical transceiver collimates and transmits the communication laser light and the self-calibration light to the second optical mirror at the focal point of the second optical mirror.
Wherein, laser communication coupling device establishes the optical axis as transmitting system, and the light reflection subassembly separates the communication laser and the self-calibration light of receiving, generates the communication laser after the separation and the self-calibration light after the separation to with the self-calibration light reflection after the separation to third optical mirror, the communication laser after the separation sends after main telescope expands the back, includes: the communication laser and the self-correcting light received by the fast reflecting mirror are reflected to the first beam splitter through the second beam splitter, are separated through the first beam splitter to generate separated self-correcting light and separated communication laser, the separated self-correcting light is reflected to the third optical mirror, the separated communication laser is reflected to the tracking mirror, and the tracking mirror is reflected and then is emitted through the main telescope.
The laser communication coupling device is used as a transmitting system to establish an optical axis, the third optical mirror reflects the received self-correcting light to the light reflection assembly and reflects the self-correcting light to the imaging part through the light reflection assembly to generate a light spot P2, and the laser communication coupling device comprises: the third optical mirror collimates the received self-correcting light and reflects the collimated light to the first beam splitter, and the first beam splitter reflects the received self-correcting light again to the imaging unit, thereby generating a light spot P2.
Wherein, laser communication coupling device corrects the optical axis as transmitting system, includes:
the first optical transceiver transmits the self-calibration light and the communication laser to the first optical lens;
the first optical mirror reflects the received self-correcting light and communication laser light to the light reflection assembly;
the light reflection assembly separates the received self-correcting light from the communication laser to generate separated self-correcting light and separated communication laser, reflects the separated self-correcting light to the third optical lens, and reflects the separated communication laser to the main telescope to be emitted after the beam of the main telescope is expanded;
the third optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the imaging part to generate a light spot P3;
the second optical transceiver collimates and transmits the self-correcting light and the communication laser to the second optical lens;
the second optical mirror reflects the received self-correcting light and the communication laser light to the light reflection assembly;
the light reflection assembly separates the received self-correcting light from the communication laser to generate separated self-correcting light and separated communication laser, reflects the separated self-correcting light to the third optical lens, and reflects the separated communication laser to the main telescope to be expanded and then emits the expanded communication laser;
the third optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the imaging part to generate a light spot P4; and the number of the first and second groups,
comparing the P3 with the P1, based on the position deviation of the P3 and the P1, the light reflection assembly is adjusted to ensure that the position deviation of the P4 and the P2 is the same as the position deviation of the P3 and the P1, so that the optical axes of the communication laser emitted by the first light transceiving part and the second light transceiving part are overlapped, and the light reflection assembly is adjusted to ensure that the P3 and the beacon light are emitted again in an overlapped mode.
Wherein, laser communication coupling device corrects the optical axis as transmitting system, and first optical mirror reflects the self-calibration light that receives and communication laser to the light reflection assembly, includes:
the first optical mirror reflects the received self-calibration light and communication laser light to the second beam splitter.
Wherein, laser communication coupling device corrects the optical axis as transmitting system, and the light reflection subassembly separates the self-calibration light and the communication laser of receiving, generates the communication laser after the self-calibration light and the separation after the separation, reflects the self-calibration light after the separation to the third optical mirror, sends after expanding the beam to main telescope reflection of communication laser after the separation to main telescope, includes:
the second spectroscope reflects the received self-correction light and the communication laser to the first spectroscope, the first spectroscope separates the self-correction light from the communication laser to generate separated self-correction light and separated communication laser, the separated self-correction light is reflected to the third optical mirror, the separated communication laser is reflected to the tracking mirror, and the tracking mirror reflects the received communication laser to the main telescope for expansion and then sends out.
The laser communication coupling device is used as an emission system to correct an optical axis, the third optical mirror reflects the received self-correcting light to the light reflection assembly, and the third optical mirror collimates the received self-correcting light and then reflects the collimated self-correcting light to the first spectroscope.
Wherein, the laser communication coupling device corrects the optical axis as transmitting system, and the light reflection subassembly reflects the self-calibration light of receiving to image forming portion, generates facula P3, includes:
the first beam splitter reflects the received self-correcting light to the imaging section, and generates a light spot P3.
The laser communication coupling device is used as a correction optical axis of the transmitting system, and the second light receiving and transmitting part collimates and transmits the self-correction light and the communication laser to the second optical lens;
wherein, laser communication coupling device corrects the optical axis as transmitting system, and the second optical mirror reflects the self-calibration light that receives and communication laser to the light reflection assembly, includes:
the second optical mirror reflects the received self-correcting light and communication laser light to the fast reflecting mirror.
Wherein, laser communication coupling device corrects the optical axis as transmitting system, and the light reflection subassembly separates the self-calibration light and the communication laser of receiving, generates the communication laser after the self-calibration light and the separation after the separation, reflects the self-calibration light after the separation to the third optical mirror, sends after expanding the beam with the main telescope reflection of communication laser after the separation, includes:
the fast reflection mirror reflects the received self-correction light and the communication laser to the second beam splitter, the second beam splitter reflects the received communication laser and the received self-correction light to the first beam splitter and then separates the communication laser and the communication laser, separated communication laser and separated self-correction light are generated, the separated self-correction light is reflected to the third optical mirror, the separated communication laser is reflected to the tracking mirror, and the tracking mirror reflects the received communication laser to the main telescope and emits the communication laser after expansion.
Wherein, laser communication coupling device corrects the optical axis as transmitting system, and the third optical mirror reflects the self-calibration light of receiving to the light reflection assembly, includes:
the third optical lens collimates the received self-correcting light and reflects the collimated self-correcting light to the first light splitting mirror.
Wherein, the laser communication coupling device corrects the optical axis as transmitting system, and the light reflection subassembly reflects the self-calibration light of receiving to image forming portion, generates facula P4, includes:
the first beam splitter reflects the received self-correcting light to the imaging section, and generates a light spot P4.
The laser communication coupling device is used as an emitting system to correct an optical axis, compares P3 with P1, and adjusts the light reflection assembly based on the position deviation of P3 and P1 so that the position deviation of P4 and P2 is the same as the position deviation of P3 and P1, and the optical axes of communication lasers emitted by the first light transceiver and the second light transceiver are overlapped, and the laser communication coupling device comprises: comparing the P3 with the P1, the fast-reflection mirror is adjusted based on the positional deviation between the P3 and the P1 so that the positional deviation between the P4 and the P2 is the same as the positional deviation between the P3 and the P1, the optical axes of the communication laser beams emitted from the first optical transceiver and the second optical transceiver coincide with each other, and the tracking mirror is adjusted so that the P3 and the beacon light are emitted again in coincidence with each other.
Wherein, laser communication coupling device establishes the optical axis as receiving system, includes:
the beacon light emitted by the communication laser and the beacon light emitting part passes through the main telescope to the light reflecting component;
the light reflection assembly separates the communication laser light and the beacon light, generates separated communication laser light and separated beacon light, reflects the separated beacon light to the imaging part, and reflects the separated communication laser light to the first optical mirror and the second optical mirror;
the imaging part receives the beacon light and generates a light spot P5;
the first optical mirror reflects the received communication laser to the first optical transceiver;
the second optical mirror reflects the received communication laser to the second optical transceiver;
the first light receiving and transmitting part transmits the self-correcting light to the first optical lens;
the first optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the third optical mirror;
the third optical mirror reflects the received self-correcting light to the light reflection assembly, and then the self-correcting light is reflected to the imaging part through the light reflection assembly to generate a light spot P6;
the second light receiving and transmitting part transmits the self-correcting light to the second optical lens;
the second optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the third optical mirror; and (c) a second step of,
the third optical mirror reflects the received self-correcting light to the light reflection assembly, and then gradually reflects the light to the imaging part through light reflection, so that a light spot P7 is generated.
Wherein, laser communication coupling device establishes the optical axis as receiving system, and the beacon light that communication laser and beacon light emission portion transmitted is through main telescope to light reflection assembly, includes: the communication laser and the beacon light emitted by the beacon light emitting part pass through the main telescope to the tracking mirror.
Wherein, laser communication coupling device establishes the optical axis as receiving system, and light reflection assembly separates communication laser and beacon light, generates communication laser and the beacon light after the separation, reflects the beacon light after the separation to the image forming portion, reflects communication laser after the separation to first optical mirror and second optical mirror, includes:
the tracking mirror reflects the received communication laser and the beacon light to the first beam splitter, the first beam splitter separates the received communication laser and the beacon light to generate the separated communication laser and the separated beacon light, the separated beacon light is reflected to the imaging part, the separated communication laser is reflected to the second beam splitter, the second beam splitter reflects the received communication laser to the first optical mirror, the second beam splitter reflects the received communication laser to the fast reflector, and the fast reflector reflects the received communication laser to the second optical mirror.
Wherein, the laser communication coupling device establishes the optical axis as receiving system, and first optical mirror reflects the communication laser of receiving to first light transceiver part, includes: the first optical mirror reflects the received communication laser light to the communication laser light single mode fiber of the first optical transceiver.
Wherein, the laser communication coupling device establishes the optical axis as receiving system, and the second optical mirror reflects the communication laser that receives to second light transceiver portion, includes: the second optical mirror reflects the received communication laser light to the communication laser single mode fiber of the second optical transceiver.
Wherein, the laser communication coupling device establishes the optical axis as receiving system, and first optical mirror reflects the self-calibration light of receiving to the light reflection assembly, includes: the first optical mirror reflects the received self-correcting light to the second beam splitter.
Wherein, the laser communication coupling device establishes the optical axis as receiving system, and the light reflection subassembly is received from the correction light reflection to the third optical mirror, includes: the second beam splitter reflects the received self-correcting light to the first beam splitter, and the first beam splitter reflects the received self-correcting light to the third optical mirror.
The laser communication coupling device is used as a receiving system to establish an optical axis, the third optical mirror reflects the received self-correcting light to the light reflection assembly, and then the self-correcting light is reflected to the imaging part through the light reflection assembly to generate a light spot P6, and the method comprises the following steps: the third optical mirror reflects the received self-correcting light to the first beam splitter, and then the self-correcting light is reflected to the imaging unit by the first beam splitter, so that a light spot P6 is generated.
Wherein, the laser communication coupling device establishes the optical axis as receiving system, and the second optical mirror reflects the self-calibration light of receiving to the light reflection assembly, includes:
the second optic reflects the received self-correcting light to the fast reflecting mirror.
Wherein, the laser communication coupling device establishes the optical axis as receiving system, and the light reflection subassembly reflects the self-calibration light of receiving to the third optical mirror, includes:
the fast reflection mirror reflects the received self-correcting light to the second beam splitter, the second beam splitter reflects the received self-correcting light to the first beam splitter, and the first beam splitter reflects the received self-correcting light to the third optical mirror.
The laser communication coupling device is used as a receiving system to establish an optical axis, the third optical mirror reflects the received self-correcting light to the light reflection assembly, and then the self-correcting light is gradually reflected to the imaging part through light reflection to generate a light spot P7, and the method comprises the following steps: the third optical mirror reflects the received self-correcting light to the first beam splitter, and then the self-correcting light is reflected to the imaging unit by the first beam splitter, so that a light spot P7 is generated.
Wherein, laser communication coupling device corrects the optical axis as receiving system, includes:
the beacon light emitted by the communication laser and the beacon light emitting part passes through the main telescope to the light reflecting component;
the light reflection assembly separates the received communication laser light from the beacon light, generates separated beacon light and separated communication laser light, and reflects the separated beacon light to the imaging part to generate a light spot P8;
the first light receiving and transmitting part transmits the self-correcting light to the first optical lens;
the first optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the third optical mirror;
the third optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the imaging part to generate a light spot P9;
the second light receiving and transmitting part transmits the self-correcting light to the second optical lens;
the second optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection group reflects the received self-correcting light to the third optical mirror;
the third optical mirror reflects the received self-correcting light to the light reflection assembly;
the light reflection component reflects the received self-correcting light to the imaging part to generate a light spot P10;
comparing P9 and P6, and adjusting the light reflection assembly based on the positional deviations of P9 and P6 so that the positional deviation of P10 and P7 is the same as the positional deviation of P9 and P6; and the number of the first and second groups,
the light reflection assembly was adjusted so that the positional deviation of P8 and P5 was the same as the positional deviation of P9 and P6.
Wherein, laser communication coupling device rectifies the optical axis as receiving system, and the beacon light that communication laser and beacon light emission portion transmitted is through main telescope to light reflection assembly, includes: the communication laser and the beacon light emitted by the beacon light emitting part pass through the main telescope to the tracking mirror.
The laser communication coupling device is used as a receiving system to correct an optical axis, the light reflection assembly separates received communication laser light from beacon light, separated beacon light and separated communication laser light are generated, and the separated beacon light is reflected to the imaging part to generate a light spot P8, and the laser communication coupling device comprises: the tracking mirror reflects the received communication laser light and the received beacon light to the first beam splitter, and the first beam splitter separates the received communication laser light and the received beacon light to generate separated communication laser light and beacon light, and then reflects the beacon light to the imaging unit to generate a light spot P8.
Wherein, laser communication coupling device corrects the optical axis as receiving system, and first optical mirror reflects the self-calibration light of receiving to the light reflection assembly, includes: the first optical mirror reflects the received self-correcting light to the second beam splitter.
Wherein, laser communication coupling device corrects the optical axis as receiving system, and the light reflection subassembly is received from correcting light reflection to third optical mirror, includes: the second beam splitter reflects the received self-correcting light to the first beam splitter, and the first beam splitter reflects the received self-correcting light to the third optical mirror.
Wherein, laser communication coupling device corrects the optical axis as receiving system, and the third optical mirror reflects the self-calibration light of receiving to the light reflection assembly, includes: the third optical mirror reflects the received self-correcting light to the first beam splitter.
The laser communication coupling device is used as a receiving system to correct an optical axis, the light reflection assembly reflects received self-correcting light to the imaging part to generate a light spot P9, and the laser communication coupling device comprises: the first beam splitter reflects the received self-correcting light to the imaging section, and generates a light spot P9.
Wherein, the laser communication coupling device corrects the optical axis as receiving system, and the second light transceiver part is launched from correcting light to the second optical mirror, includes: the self-calibration optical single-mode fiber of the second optical transceiver transmits the self-calibration light to the second optical mirror.
Wherein, the laser communication coupling device corrects the optical axis as receiving system, and the second optical mirror reflects the self-calibration light of receiving to the light reflection assembly, includes: the second optic reflects the received self-correcting light to the fast reflecting mirror.
Wherein, laser communication coupling device corrects the optical axis as receiving system, and the light reflection subassembly is received from correcting light reflection to third optical mirror, includes: the fast reflection mirror reflects the received self-correcting light to the second beam splitter, the second beam splitter reflects the received self-correcting light to the first beam splitter, and the first beam splitter reflects the received self-correcting light to the third optical mirror.
Wherein, laser communication coupling device corrects the optical axis as receiving system, and the third optical mirror reflects the self-calibration light of receiving to the light reflection assembly, includes: the third optical mirror reflects the received light to the first beam splitter.
The laser communication coupling device is used as a receiving system to correct an optical axis, the light reflection assembly reflects received self-correcting light to the imaging part to generate a light spot P10, and the laser communication coupling device comprises: the first beam splitter reflects the received self-correcting light to the imaging section, and generates a light spot P10.
The laser communication coupling device is used as a receiving system to correct an optical axis, compares P9 with P6, and adjusts the fast-reflection mirror based on the position deviation of P9 and P6 so that the position deviation of P10 and P7 is the same as the position deviation of P9 and P6, and comprises the following steps: comparing P9 and P6, the light reflecting components are adjusted based on the positional deviations of P9 and P6 so that the positional deviations of P10 and P7 are the same as the positional deviations of P9 and P6.
The laser communication coupling device is used as a receiving system to correct an optical axis, and adjusts the light reflection assembly so that the position deviation of P8 and P5 is the same as the position deviation of P9 and P6, and the laser communication coupling device comprises the following components: the tracking mirror is adjusted so that the positional deviation of P8 and P5 is the same as the positional deviation of P9 and P6.
Fig. 2 is a schematic flow chart of a method for establishing an optical axis by using a laser communication coupling device as a transmitting system according to an embodiment of the present disclosure.
As shown in fig. 2, a method S100 for performing optical axis correction based on a laser communication coupling device as a transmitting system includes:
s102: the first optical transceiver transmits the communication laser light and the self-calibration light to the first optical lens;
s104: the first optical mirror reflects the received communication laser light and the self-correcting light to the light reflecting component;
s106: the light reflection component separates the received self-correcting light and transmits the separated self-correcting light to the third optical mirror;
s108: the third optical mirror reflects the received self-correcting light to the light reflection assembly;
s110: the light reflection component reflects the received self-correcting light to the imaging part, and the imaging part receives the self-correcting light generation spot P1;
s112: the communication laser emitted by the first light receiving and transmitting part is emitted after the telescope expands the beam;
s114: the second optical transceiver collimates and transmits the communication laser and the self-correcting light to the second optical lens;
s116: adjusting the light reflection assembly to enable the optical axes of the communication laser received by the second light receiving and transmitting part to coincide with the optical axes of the communication laser transmitted by the first light receiving and transmitting part;
s118: the second optical mirror reflects the received communication laser light and the self-correcting light to the light reflecting component;
s120: the light reflection assembly separates the received communication laser and the self-correction light to generate separated communication laser and separated self-correction light, the separated self-correction light is reflected to the third optical lens, and the separated communication laser is emitted after being expanded by the main telescope;
s122: the third optical mirror reflects the received self-correcting light to the light reflection assembly, and the self-correcting light is reflected to the imaging part through the light reflection assembly to generate a light spot P2; and the number of the first and second groups,
s124: the beacon light emitted by the beacon light emitting unit is adjusted so that the optical axes of the light emitted by the first light transmitting/receiving unit, the second light transmitting/receiving unit, and the beacon light emitting unit coincide with each other.
Fig. 3 is a schematic flow chart of a method for correcting an optical axis by using a laser communication coupling device as an emitting system according to an embodiment of the present disclosure.
As shown in fig. 3, the method for correcting an optical axis based on a laser communication coupling device, which is used as a transmitting system to correct an optical axis S200, includes:
s202: the first optical transceiver transmits the self-calibration light and the communication laser to the first optical lens;
s204: the first optical mirror reflects the received self-correcting light and communication laser light to the light reflection assembly;
s206: the light reflection assembly separates the received self-correcting light from the communication laser to generate separated self-correcting light and separated communication laser, reflects the separated self-correcting light to the third optical lens, and reflects the separated communication laser to the main telescope to be emitted after the beam of the main telescope is expanded;
s208: the third optical mirror reflects the received self-correcting light to the light reflection assembly;
s210: the light reflection component reflects the received self-correcting light to the imaging part to generate a light spot P3;
s212: the second optical transceiver collimates and transmits the self-correcting light and the communication laser to the second optical lens;
s214: the second optical mirror reflects the received self-correcting light and the communication laser light to the light reflection assembly;
s216: the light reflection assembly separates the received self-correcting light from the communication laser to generate separated self-correcting light and separated communication laser, reflects the separated self-correcting light to the third optical lens, and reflects the separated communication laser to the main telescope to be expanded and then emits the expanded communication laser;
s218: the third optical mirror reflects the received self-correcting light to the light reflection assembly;
s220: the light reflection component reflects the received self-correcting light to the imaging part to generate a light spot P4; and the number of the first and second groups,
s222: comparing the P3 with the P1, based on the position deviation of the P3 and the P1, the light reflection assembly is adjusted to ensure that the position deviation of the P4 and the P2 is the same as the position deviation of the P3 and the P1, so that the optical axes of the communication laser emitted by the first light transceiving part and the second light transceiving part are overlapped, and the light reflection assembly is adjusted to ensure that the P3 and the beacon light are emitted again in an overlapped mode.
Fig. 4 is a schematic flow chart of a method for correcting an optical axis by using a laser communication coupling device as a receiving system according to an embodiment of the present disclosure.
As shown in fig. 4, the method for performing optical axis correction based on a laser communication coupling device, which is used as a receiving system to establish an optical axis S300, includes:
s302: the beacon light emitted by the communication laser and the beacon light emitting part passes through the main telescope to the light reflecting component;
s304: the light reflection assembly separates the communication laser light and the beacon light, generates separated communication laser light and separated beacon light, reflects the separated beacon light to the imaging part, and reflects the separated communication laser light to the first optical mirror and the second optical mirror;
s306: the imaging part receives the beacon light and generates a light spot P5;
s308: the first optical mirror reflects the received communication laser to the first optical transceiver;
s310: the second optical mirror reflects the received communication laser to the second optical transceiver;
s312: the first light receiving and transmitting part transmits the self-correcting light to the first optical lens;
s314: the first optical mirror reflects the received self-correcting light to the light reflection assembly;
s316: the light reflection component reflects the received self-correcting light to the third optical mirror;
s318: the third optical mirror reflects the received self-correcting light to the light reflection assembly, and then the self-correcting light is reflected to the imaging part through the light reflection assembly to generate a light spot P6;
s320: the second light receiving and transmitting part transmits the self-correcting light to the second optical lens;
s322: the second optical mirror reflects the received self-correcting light to the light reflection assembly;
s324: the light reflection component reflects the received self-correcting light to the third optical mirror; and the number of the first and second groups,
s326: the third optical mirror reflects the received self-correcting light to the light reflection assembly, and then gradually reflects the light to the imaging part through light reflection, so that a light spot P7 is generated.
Fig. 5 is a schematic flow chart of a method for correcting an optical axis by using a laser communication coupling device as a receiving system according to an embodiment of the present disclosure.
As shown in fig. 5, the method for correcting an optical axis based on a laser communication coupling apparatus, which is used as a receiving system to correct an optical axis S400, includes:
s402: the beacon light emitted by the communication laser and the beacon light emitting part passes through the main telescope to the light reflecting component;
s404: the light reflection assembly separates the received communication laser light from the beacon light, generates separated beacon light and separated communication laser light, and reflects the separated beacon light to the imaging part to generate a light spot P8;
s406: the first light receiving and transmitting part transmits the self-correcting light to the first optical lens;
s408: the first optical mirror reflects the received self-correcting light to the light reflection assembly;
s410: the light reflection component reflects the received self-correcting light to the third optical mirror;
s412: the third optical mirror reflects the received self-correcting light to the light reflection assembly;
s414: the light reflection assembly reflects the received self-correcting light to the imaging part to generate a light spot P9;
s416: the second light receiving and transmitting part transmits the self-correcting light to the second optical lens;
s418: the second optical mirror reflects the received self-correcting light to the light reflection assembly;
s420: the light reflection group reflects the received self-correcting light to the third optical mirror;
s422: the third optical mirror reflects the received self-correcting light to the light reflection assembly;
s424: the light reflection component reflects the received self-correcting light to the imaging part to generate a light spot P10;
s426: comparing P9 and P6, and adjusting the light reflection assembly based on the positional deviations of P9 and P6 so that the positional deviation of P10 and P7 is the same as the positional deviation of P9 and P6; and the number of the first and second groups,
s428: the light reflection assembly was adjusted so that the positional deviation of P8 and P5 was the same as the positional deviation of P9 and P6.
The optical axis correction method based on the laser communication coupling device has the following technical advantages:
firstly, the off-axis parabolic mirror and the parallel optical fiber array are adopted for collimation, the influence of chromatic aberration of the system position is eliminated, the communication laser and the self-checking laser are perfectly emitted in a collimation mode, the self-checking light enables the tracking camera to form a perfect Gaussian spot, the advance of the mass center is facilitated, and the Gaussian spot formed by the communication laser is beneficial to laser communication;
secondly, the system is respectively controlled in a closed loop mode, so that the variation difference of the coupling efficiency of the system is reduced, and the resultant code rate is greatly improved;
thirdly, the position relation of the transmitting system can be received in real time by adopting the off-axis paraboloid and the parallel optical fiber array as a self-checking system, so that the success capability of the laser communication system is improved;
fourthly, near visible light is used for replacing non-visible light to be used as optical axis self-checking, so that the detector is more abundant in type selection;
and fifthly, the parallel optical fiber array and the off-axis parabolic mirror are adopted for collimation, so that the influence of position chromatic aberration can be eliminated, and the respective collimation effects of self-correcting light and communication laser are achieved.
In the description herein, reference to the description of the terms "one embodiment/implementation," "some embodiments/implementations," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/implementation or example is included in at least one embodiment/implementation or example of the present application. In this specification, the schematic representations of the terms described above are not necessarily the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.

Claims (10)

1. A laser communication coupling device, wherein the laser communication coupling device establishes an optical axis as a transmitting system, comprising:
a first optical transceiver unit that transmits a first communication laser and a first self-calibration light to a first optical mirror;
a first optical mirror that reflects the received first communication laser light and first self-correcting light to a light reflecting component;
the light reflection component separates the received first self-correction light and transmits the separated first self-correction light to the third optical mirror;
a third optical mirror that reflects the received first self-correcting light to the light reflecting assembly;
the light reflection component reflects the received first self-correcting light to the imaging part;
an imaging section that receives the first self-correcting light generation spot P1;
the first communication laser emitted by the first light receiving and emitting part is emitted after being expanded by the main telescope;
a second optical transceiver for collimating and transmitting the second communication laser beam and the second self-calibration beam to a second optical mirror;
adjusting the light reflection assembly to enable the optical axes of the second communication laser received by the second light receiving and transmitting part to coincide with the optical axis of the first communication laser emitted by the first light receiving and transmitting part;
a second optical mirror that reflects the received second communication laser light and second self-correcting light to the light reflection assembly;
the light reflection assembly separates the received second communication laser from the second self-correction light to generate the separated second communication laser and the separated second self-correction light, the separated second self-correction light is reflected to the third optical mirror, and the separated second communication laser is emitted after being expanded by the main telescope;
the third optical mirror reflects the received second self-correcting light to the light reflection assembly, and the second self-correcting light is reflected to the imaging part through the light reflection assembly to generate a light spot P2; and
and a beacon light emitting unit for adjusting the first beacon light emitted from the beacon light emitting unit so that the optical axes of the first light transceiving unit, the second light transceiving unit, and the beacon light emitting unit coincide with each other.
2. The laser communication coupling device of claim 1, wherein the laser communication coupling device corrects the optical axis as a transmission system, comprising:
the first optical transceiver transmits third self-calibration light and third communication laser to the first optical lens;
the first optical mirror reflects the received third self-correcting light and third communication laser light to the light reflection assembly;
the light reflection assembly separates the received third self-correcting light from the third communication laser light to generate separated third self-correcting light and separated third communication laser light, reflects the separated third self-correcting light to the third optical lens, and reflects the separated third communication laser light to the main telescope to be expanded by the main telescope and then to be emitted;
the third optical mirror reflects the received third self-correcting light to the light reflection assembly;
the light reflection component reflects the received third self-correcting light to the imaging part to generate a light spot P3;
the second optical transceiver collimates and transmits fourth self-correcting light and fourth communication laser to the second optical mirror;
the second optical mirror reflects the received fourth self-correcting light and fourth communication laser light to the light reflection assembly;
the light reflection assembly separates the received fourth self-correcting light from the fourth communication laser light to generate the fourth self-correcting light after separation and the fourth communication laser light after separation, reflects the fourth self-correcting light after separation to the third optical mirror, and reflects the fourth communication laser light after separation to the main telescope to be expanded and then to be sent out;
the third optical mirror reflects the received fourth self-correcting light to the light reflection assembly;
the light reflection component reflects the received fourth self-correcting light to the imaging part to generate a light spot P4; and
comparing the P3 with the P1, the light reflection member is adjusted based on the positional deviation between the P3 and the P1 so that the positional deviation between the P4 and the P2 is the same as the positional deviation between the P3 and the P1, the optical axes of the communication laser light emitted from the first light transmitting/receiving section and the second light transmitting/receiving section coincide with each other, and the light reflection member is adjusted so that the P3 and the first beacon light are emitted in coincidence with each other.
3. The laser communication coupling device of claim 2, wherein the laser communication coupling device establishes an optical axis as a receiving system, comprising:
the coaxial fifth communication laser and the second beacon light emitted by the beacon light emitting part pass through the main telescope to the light reflecting component;
the optical reflection assembly separates the fifth communication laser from the second beacon light, generates the separated fifth communication laser and the separated second beacon light, reflects the separated second beacon light to the imaging part, and reflects the separated fifth communication laser to the first optical mirror and the second optical mirror;
the imaging part receives the second beacon light and generates a light spot P5;
the first optical mirror reflects the received fifth communication laser to the first optical transceiver;
the second optical mirror reflects the received fifth communication laser to the second optical transceiver;
the first optical transceiver transmits the fifth self-calibration light to the first optical lens;
the first optical mirror reflects the received fifth self-correcting light to the light reflection assembly;
the light reflection assembly reflects the received fifth self-correcting light to the third optical mirror;
the third optical mirror reflects the received fifth self-correcting light to the light reflection assembly, and then the fifth self-correcting light is reflected to the imaging part through the light reflection assembly to generate a light spot P6;
the second optical transceiver transmits the sixth self-calibration light to the second optical lens;
the second optical mirror reflects the received sixth self-correcting light to the light reflecting component;
the light reflection assembly reflects the received sixth self-correcting light to the third optical mirror; and
the third optical mirror reflects the received sixth self-calibration light to the light reflection assembly, and then the sixth self-calibration light is reflected to the imaging portion through the light reflection assembly, so that a light spot P7 is generated.
4. The laser communication coupling device of claim 3, wherein the laser communication coupling device corrects the optical axis as a receiving system, comprising:
the sixth communication laser and the third beacon light emitted by the beacon light emitting part pass through the main telescope to the light reflecting assembly;
the light reflection assembly separates the received sixth communication laser light from the third beacon light to generate separated third beacon light and separated sixth communication laser light, and reflects the separated third beacon light to the imaging part to generate a light spot P8;
the first optical transceiver transmits the seventh self-calibration light to the first optical lens;
the first optical mirror reflects the received seventh self-correcting light to the light reflecting component;
the light reflection component reflects the received seventh self-correcting light to the third optical mirror;
the third optical mirror reflects the received seventh self-correcting light to the light reflecting component;
the light reflection assembly reflects the received seventh self-correcting light to the imaging part to generate a light spot P9;
the second optical transceiver transmits the eighth self-calibration light to the second optical lens;
the second optical mirror reflects the received eighth self-correcting light to the light reflecting component;
the light reflection group reflects the received eighth self-correcting light to the third optical mirror;
the third optical mirror reflects the received eighth self-correcting light to the imaging part to generate a light spot P10;
comparing P9 and P6, and adjusting the light reflection assembly based on the positional deviations of P9 and P6 so that the positional deviation of P10 and P7 is the same as the positional deviation of P9 and P6; and
the light reflection assembly was adjusted so that the positional deviation of P8 and P5 was the same as the positional deviation of P9 and P6.
5. The laser communication coupling device of claim 1, wherein the light reflecting assembly comprises: the device comprises a first spectroscope, a second spectroscope, a fast reflecting mirror and a tracking mirror.
6. The laser communication coupling device according to claim 1, wherein the first optical transceiver section or the second optical transceiver section includes a communication laser single-mode fiber that transmits and receives communication laser light and a self-correcting optical single-mode fiber that transmits self-correcting light.
7. A method for correcting an optical axis based on a laser communication coupling device, wherein the laser communication coupling device is used as a transmitting system to establish the optical axis, and the method comprises the following steps:
the first optical transceiver transmits the first communication laser and the first self-calibration light to the first optical lens;
the first optical mirror reflects the received first communication laser and first self-correcting light to the light reflection assembly;
the light reflection component separates the received first self-correction light and transmits the separated first self-correction light to the third optical mirror;
the third optical mirror reflects the received first self-correcting light to the light reflection assembly;
the light reflection component reflects the received first self-correcting light to the imaging part;
the imaging section receives the first self-correcting light generation spot P1;
the first communication laser emitted by the first light receiving and transmitting part is emitted after being expanded by the telescope;
the second optical transceiver collimates and transmits the second communication laser and the second self-correcting light to the second optical lens;
adjusting the light reflection assembly to enable the optical axes of the second communication laser received by the second light receiving and transmitting part to coincide with the optical axis of the communication laser transmitted by the first light receiving and transmitting part;
the second optical mirror reflects the received second communication laser and second self-correcting light to the light reflection assembly;
the light reflection assembly separates the received second communication laser from the second self-correction light to generate the separated second communication laser and the separated second self-correction light, the separated second self-correction light is reflected to the third optical mirror, and the separated second communication laser is emitted after being expanded by the main telescope;
the third optical mirror reflects the received second self-correcting light to the light reflection assembly, and the second self-correcting light is reflected to the imaging part through the light reflection assembly to generate a light spot P2; and
the first beacon light emitted by the beacon light emitting unit is adjusted so that the optical axes emitted by the first light transceiving unit, the second light transceiving unit, and the beacon light emitting unit coincide.
8. The method for optical axis correction based on laser communication coupling device according to claim 7, wherein the laser communication coupling device is used as a transmitting system to correct the optical axis, and comprises:
the first optical transceiver transmits third self-calibration light and third communication laser to the first optical lens;
the first optical mirror reflects the received third self-correcting light and third communication laser light to the light reflection assembly;
the light reflection assembly separates the received third self-correcting light from the third communication laser light to generate separated third self-correcting light and separated third communication laser light, reflects the separated third self-correcting light to the third optical lens, and reflects the separated third communication laser light to the main telescope to be expanded by the main telescope and then to be emitted;
the third optical mirror reflects the received third self-correcting light to the light reflection assembly;
the light reflection component reflects the received third self-correcting light to the imaging part to generate a light spot P3;
the second optical transceiver collimates and transmits fourth self-correcting light and fourth communication laser to the second optical mirror;
the second optical mirror reflects the received fourth self-correcting light and fourth communication laser light to the light reflection assembly;
the light reflection assembly separates the received fourth self-correcting light from the fourth communication laser light to generate the fourth self-correcting light after separation and the fourth communication laser light after separation, reflects the fourth self-correcting light after separation to the third optical mirror, and reflects the fourth communication laser light after separation to the main telescope to be expanded and then to be sent out;
the third optical mirror reflects the received fourth self-correcting light to the light reflection assembly;
the light reflection component reflects the received fourth self-correcting light to the imaging part to generate a light spot P4; and
comparing P3 with P1, based on the position deviation of P3 and P1, the light reflection assembly is adjusted so that the position deviation of P4 and P2 is the same as the position deviation of P3 and P1, and the optical axes of the communication laser beams emitted by the first light transceiver and the second light transceiver coincide.
9. The method for optical axis correction based on laser communication coupling device according to claim 8, wherein the laser communication coupling device establishes an optical axis as a receiving system, comprising:
the fifth communication laser and the second beacon light emitted by the beacon light emitting part pass through the main telescope to the light reflection assembly;
the optical reflection assembly separates the fifth communication laser from the second beacon light, generates the separated fifth communication laser and the separated second beacon light, reflects the separated second beacon light to the imaging part, and reflects the separated fifth communication laser to the first optical mirror and the second optical mirror;
the imaging part receives the second beacon light and generates a light spot P5;
the first optical mirror reflects the received fifth communication laser to the first optical transceiver;
the second optical mirror reflects the received fifth communication laser to the second optical transceiver;
the first optical transceiver transmits the fifth self-calibration light to the first optical lens;
the first optical mirror reflects the received fifth self-correcting light to the light reflection assembly;
the light reflection assembly reflects the received fifth self-correcting light to the third optical mirror;
the third optical mirror reflects the received fifth self-correcting light to the light reflection assembly, and then the fifth self-correcting light is reflected to the imaging part through the light reflection assembly to generate a light spot P6;
the second optical transceiver transmits the sixth self-calibration light to the second optical lens;
the second optical mirror reflects the received sixth self-correcting light to the light reflecting component;
the light reflection assembly reflects the received sixth self-correcting light to the third optical mirror; and
the third optical mirror reflects the received sixth self-calibration light to the light reflection assembly, and then the sixth self-calibration light is reflected to the imaging portion through the light reflection assembly, so that a light spot P7 is generated.
10. The method for optical axis correction based on laser communication coupling device according to claim 9, wherein the laser communication coupling device is used as a receiving system for correcting the optical axis, and comprises:
the sixth communication laser and the third beacon light emitted by the beacon light emitting part pass through the main telescope to the light reflecting assembly;
the light reflection assembly separates the received sixth communication laser light from the third beacon light to generate separated third beacon light and separated sixth communication laser light, and reflects the separated third beacon light to the imaging part to generate a light spot P8;
the first optical transceiver transmits the seventh self-calibration light to the first optical lens;
the first optical mirror reflects the received seventh self-correcting light to the light reflecting component;
the light reflection component reflects the received seventh self-correcting light to the third optical mirror;
the third optical mirror reflects the received seventh self-correcting light to the light reflecting component;
the light reflection assembly reflects the received seventh self-correcting light to the imaging part to generate a light spot P9;
the second optical transceiver transmits the eighth self-calibration light to the second optical lens;
the second optical mirror reflects the received eighth self-correcting light to the light reflecting component;
the light reflection group reflects the received eighth self-correcting light to the third optical mirror;
the third optical mirror reflects the received eighth self-correcting light to the imaging part to generate a light spot P10;
comparing P9 and P6, and adjusting the light reflection assembly based on the positional deviations of P9 and P6 so that the positional deviation of P10 and P7 is the same as the positional deviation of P9 and P6; and
the light reflection assembly was adjusted so that the positional deviation of P8 and P5 was the same as the positional deviation of P9 and P6.
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