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

Abstract

The present disclosure provides a laser communication coupling device. The laser communication coupling device, as a transmitting system, establishes an optical axis, and includes: a first optical transceiver part and a second optical transceiver part for transmitting self-calibration light and communication laser light, and receiving communication laser light; The first optical mirror and the second optical mirror are used for collimating and transmitting the received communication laser light to the light reflection component; the light reflection component is used for transmitting and separating the received communication laser light and the self-correcting light through reflection; the third optical mirror , used to collimate the received light; the main telescope, to expand or narrow the beam of the light passing through the main telescope; the beacon light emission part, to transmit the 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 an optical axis and correct the optical axis. The present disclosure also provides an optical axis correction method based on a laser communication coupling device, which can respectively use the laser communication coupling device as a transmitting system, a receiving system, and a transmitting and receiving system to perform optical axis correction.

Description

technical field [0001] The present disclosure belongs to the technical field of laser communication, and in particular relates to a laser communication coupling device and an optical axis correction method based on the laser communication coupling device. Background technique [0002] The laser communication coupling device is an integrated device composed of an optical fiber collimation system and an optical beam expansion system. It is a receiving coupling device for free space laser communication using optical fiber, and mainly realizes the coupling and collection function of free space light. [0003] With the development of laser communication, the advantages of laser communication are becoming more and more obvious. Among them, the laser beam is narrow, the directionality is good, the antenna size is small, the information capacity is large, the power consumption is small, the volume is small, and the weight is light, which is suitable for satellite communication. Deep...

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Problems solved by technology

The prior art CN201110071279.9 has the following defects: first, the optical fiber combiner described in this patent is only suitable for a specific short-wave band (800nm-900nm), and cannot meet the existing communication wavelengths around 1520nm-1580nm; second, The tracking camera cannot adapt to the multi-wavelength imaging function, and it is prone to defocusing, which affects the tracking accuracy; third, the aspheric collimation lens cannot meet the simultaneous collimation function of the self-inspection laser and the communication laser with a single wavelength; fourth, the system Real-time monitoring of the optical system of transmitting and receiving positions, and the ability to adjust the optical axis at any time

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