Common-caliber laser communication optical transceiver based on optical phased array

Abstract

The invention relates to a common-caliber laser communication optical transceiver based on a phased array and belongs to the technical field of laser communications. In order to solve the problem of poor communication transmission and reception isolation in the prior art, the common-caliber laser communication optical transceiver includes a communication laser source, a beam expansion lens set, apolarization beam splitter, a Faraday rotator, a polarization beam splitting prism, a lambada / 4 wave plate, a fine phased array scanning device, a liquid crystal tunable wave plate i, a coarse scanning device, a liquid crystal tunable wave plate ii, a narrow band filter, a polarization analyzer, an objective lens and a detector. The common-caliber laser communication optical transceiver adopts the laser transmission and laser reception common caliber design to realize the control of the transmission beam angle and the receiving field of view by using the optical phased array device, and usesthe Faraday rotator combined with the polarization beam splitting prism and the polarization analyzer to realize the separation of laser transmission and laser reception; and the common-caliber lasercommunication optical transceiver based on the phased array can be applied to free space laser communication occasion where volume, weight, power consumption and shape are limited.

Description

technical field [0001] The invention belongs to the technical field of laser communication, and in particular relates to a common aperture laser communication optical transceiver based on a phased array. Background technique [0002] Free space laser communication refers to the communication between free space channels using laser beams as information carriers. Laser communication has the advantages of high speed, strong concealment, and strong anti-interference ability, and has broad application space in military and civilian communications. The pointing capture, tracking and alignment mechanisms used in existing free-space laser communication optical transceivers are mechanical servos composed of motors, bearings, rotating shafts, and code discs. The servos are large in size, heavy in weight, and consume a lot of power, which limits the The scope of application of space laser communication optical transceivers, and the shape of optical transceivers using mechanical servo ...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of poor communication transceiver isolation in the prior art, the present invention provides a common-aperture laser communication optical transceiver based on an optical phased array

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