High reliability space division multiplexing laser communication antenna under dynamic rotation condition

Abstract

The high-reliability space-division multiplexing laser communication antenna under the condition of dynamic rotation belongs to the field of wireless laser communication. In order to solve the problems of the prior art, the data source is connected to the communication laser 1 and the communication laser 2; the outer optical transmitting antenna and the inner optical transmitting antenna The antenna, the inner optical receiving antenna and the outer optical receiving antenna are arranged coaxially in sequence; the communication laser 1 is connected to the outer optical transmitting antenna through an optical fiber, and the end face of the optical fiber is located at the focal plane of the outer optical transmitting antenna; the communication laser 2 is connected to the inner layer through an optical fiber The optical transmitting antenna, the end face of the optical fiber is located at the focal plane of the inner optical transmitting antenna; the first high-speed photodetector connects the inner optical receiving antenna through a multi-core optical fiber, and the end face of the optical fiber is located at the focal plane of the inner optical receiving antenna; the second high-speed photodetector passes through The multi-core optical fiber is connected to the outer optical receiving antenna, and the end face of the optical fiber is located at the focal plane of the outer optical receiving antenna; the data memory is connected to the high-speed photodetector 1 and the high-speed photodetector 2.

Description

technical field [0001] The invention relates to a high-reliability laser communication antenna under dynamic rotation conditions, and belongs to the field of wireless laser communication. Background technique [0002] Wireless laser communication refers to a technology that uses laser beams as carriers to directly transmit data, voice, and image information in space (land or outer space). It has strong anti-interference ability, high communication rate, small size, light weight and low power consumption. low merit. At present, some rockets and space stations use space laser communication to complete high-speed information transmission, which can not only improve the communication rate, but also reduce the trouble caused by optical fiber wiring. However, the existing space laser communication mostly adopts the point-to-point communication mode. Once the optical fiber connecting the antenna fails, the communication will be completely terminated, and the reliability is low. F...

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