Optical signal processing method, optical signal processing system, communication satellite and ground terminal

By directly exchanging optical signals between satellite nodes through all-optical switching technology, the electronic bottleneck problem caused by the conversion of optical signals into electrical signals in satellite communication is solved, the system structure is simplified, the data bandwidth is increased, and the weight and power consumption of the satellite are reduced.

CN116961750BActive Publication Date: 2026-06-19张江国家实验室
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
张江国家实验室
Filing Date
2022-04-19
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

In existing technologies, optical signals in satellite communication need to be converted into electrical signals for processing before being converted back into optical signals. Due to electronic bottlenecks and space environment constraints, it is difficult to support high-speed laser signal transmission above Gbit/s. At the same time, the large number of devices leads to excessive payload weight, size and power consumption.

Method used

By adopting all-optical switching technology, optical signals are directly exchanged between satellite nodes, avoiding optical-electrical-optical conversion, simplifying the structure of laser terminals, and improving data bandwidth.

Benefits of technology

It effectively simplifies the structure of the laser terminal system, increases data bandwidth, reduces the impact of electronic bottlenecks on high-speed optical signals, and reduces the weight, size, and power consumption of the satellite.

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Abstract

This invention relates to the field of optical communication, specifically to an optical signal processing method, an optical signal processing system, a communication satellite, and a ground terminal. The optical signal processing method includes: receiving an optical signal via a laser terminal; separating the optical signal into optical control messages and optical data messages; determining the destination address corresponding to the optical signal based on the optical control message; determining whether the next hop of the destination address is the current node; if the next hop is not the current node, then performing the following: generating a converted optical control message corresponding to the optical control message and sending it to the laser terminal; directly sending the optical data message to the laser terminal; and sending the converted optical control message and optical data message to the next node via the laser terminal. During optical signal transmission between nodes, data messages can achieve all-optical switching, and message processing within the satellite can avoid optical-electrical-optical conversion. This eliminates the need for conversion to electrical signals, effectively simplifying the system structure of the laser terminal and significantly improving data bandwidth.
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