Space laser communication terminal capable of fast tuning wave length

Abstract

The invention provides a space laser communication terminal capable of fast tuning wave length. The terminal comprises a control unit, a laser control drive, a tunable semiconductor laser, a modulation / demodulation module, an optical amplifier, an aligner, a beam splitter, an orientation aligning system, a telescope system, a servo drive, a tunable filter, a focusing lens and a photoelectric detection module. When the terminal is used as a signal transmitting terminal, the command sent by the control unit controls the output power and the wave length of the tunable semiconductor laser by the laser control drive; the output light is loaded with the electrical modulation signal through the modulation / demodulation module; and, after being amplified by the optical amplifier, the modulation signal outputted by the modulation / demodulation module is transmitted as the parallel light by the aligner and is transmitted to the free space by the telescope system after being split by the beam splitter to arrive at the orientation aligning system. The terminal adopts the tunable semiconductor laser as the light source, so that the wave length can be precisely tuned and fast switched; and thus, the dynamic allocation capability of the space laser communication link is improved.

Description

technical field [0001] The invention belongs to the field of space laser communication, and relates to a space laser communication terminal with rapidly tunable wavelength. Background technique [0002] Compared with other means of space communication, laser communication technology has the advantages of large communication capacity, high data transmission rate, small volume of transceiver system and strong anti-electromagnetic interference ability. With the rapid development of laser communication technology and space optical network, space laser communication terminals need to have wavelength tunable and fast switching capabilities to improve the dynamic configuration capability of the entire space optical communication link and improve the flexibility and reliability of the entire network. sex. Therefore, a fast wavelength tunable space laser communication terminal based on tunable semiconductor lasers is proposed. [0003] At present, there are many researches on tunab...

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the invention is to provide a space laser communication terminal with fast and tunable wavelength, which can solve the shortcomings of the space laser communication terminal such as single wavelength and poor flexibility, so that the space optical network switching node has Refactoring and other functions

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