A multi-modulation format compatible high-speed laser signal phase-locked-free receiving system and method

Abstract

The invention relates to a multi-modulation format compatible high-speed laser signal phase-locked-free receiving system and method, which can greatly improve the communication system compatibility atthe relay node of the prior laser communication network and save the price and resource cost of system performance upgrading. The system comprises a control instruction unit, a low noise high gain optical amplifier, an optical switch, a filter, an optical delay interferometer I, an optical delay interferometer Q, a first balance detector, a second balance detector, an inverse code switching unit,a parallel-to-serial conversion unit and a data processing unit. The control instruction unit is connected with the optical switch, the inverse coding switch unit and the parallel-serial conversion switch unit. The low-noise high-gain optical amplify is connected with an optical switch. The optical switch is respectively connected with the first balance detector and the second balance detector through a filter, an optical delay interferometer I and an optical delay interferometer Q; The first balance detector and the second balance detector sequentially pass through the inverse coding switchunit, the parallel-serial conversion unit and the data processing unit, and output an electric signal.

Description

technical field [0001] The invention belongs to the field of laser communication, and in particular relates to a multi-modulation format compatible high-speed laser signal phase-free receiving system and method. Background technique [0002] Laser communication has outstanding advantages such as high data rate, strong anti-interference and anti-interception capabilities, and good confidentiality performance. It has become the main link form of ground backbone network transmission. Commercial 100G optical modules have gradually matured. 400G optical module display. At the same time, with the continuous verification of the feasibility of space laser link transmission in the world, countries around the world have successively launched space information network construction plans based on laser links in recent years, such as NASA's "Laser Communication Relay Demonstration (LCRD)" plan, The "Data Relay System (EDRS)" program of the European Space Agency (ESA), and the "Optical D...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem of limited network compatibility and poor scalability caused by relay nodes only supporting a single laser communication system in the existing laser information network, the present invention proposes a laser communication system compatible with IM, BPSK, DPSK, QPSK and DQPSK at the same time. The mainstream multi-modulation format in the system is compatible with the high-speed laser signal phase-free receiving system and method, which can greatly improve the communication standard compatibility at the relay node of the existing laser communication network, and save the price and resource cost of system performance upgrade

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