Large field of view reverse modulation recovery free space laser communication system

Abstract

The invention provides a large-visual-field retro-modulation reflector free space laser communication system, belongs to the technical field of wireless communication, and aims at solving the problems of small line aligning visual field, high requirement accuracy of the system and poor link stability in the prior art. A communication transmitting terminal is connected with the a port of a first circulator, the c port is connected with a photoelectric detector, and the b port is connected with a coupling lens. A Cassegrain telescope and the coupling lens are coaxially arranged. A peep hole optical system and a curved micro-lens array are coaxially arranged. The peep hole optical system is connected with a 1x2 coupler array. The high output power end of the 1x2 coupler array is connected with an Nx1 high-speed optical switch. The low output power end of the 1x2 coupler array is connected with a high-speed photoelectric detector array. The high-speed photoelectric detector array, a controller and the high-speed optical switch are connected in turn. The high-speed optical switch is connected with the d end of a second circulator, and the e end is accessed to an optical fiber amplifier. The optical fiber amplifier is accessed to a high-speed modulator which is accessed to the f end of the second circulator.

Description

technical field [0001] The invention relates to a device for free-space laser communication, in particular to a reverse modulation wireless communication device for large field of view reception, and belongs to the technical field of wireless communication. Background technique [0002] Laser wireless communication is a very important communication method in the field of wireless communication because of its advantages such as large communication capacity, high transmission rate, good confidentiality, strong anti-electromagnetic interference ability, light weight, small size, and low power consumption. In the field of high-speed wireless communication between ground and satellites, occasions that require high security and confidentiality of communication content (such as government, military department, security department), or places with strong electromagnetic interference (such as battlefields) and many other occasions have potential application prospects. [0003] The a...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems in the existing optical fiber modulation amplification recovery free space laser communication system that the link alignment field of view is too small, the system requires high precision, and the link stability is poor, the present invention proposes a large field of view reverse modulation recovery Free Space Laser Communication System

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