Extensible multi-channel serial port optical transceiver based on FPGA (field programmable gate array)

Abstract

The invention discloses an extensible multi-channel serial port optical transceiver based on an FPGA (field programmable gate array). According to the optical transceiver disclosed by the invention, functions of converting serial port electrical signal input into optical fiber data flow output and converting optical fiber data flow input into serial port electrical signal output are realized; and functions of converting high-speed (1MHz) extensible serial port channel number simultaneous input with 499 channels being supported into single optical fiber output and converting single optical fiber input into high-speed (1MHz) extensible serial port channel number simultaneous output with 499 channels being supported are realized. Flexile configuration of an SFP optical fiber module is designed and provided, the transmission distance is increased from 500m to 120km, the stability and the reliability of high-speed serial port transmission are improved, an anti-electromagnetic interference ability of high-speed serial port transmission is enhanced, the cost is saved, and requirements of various engineering application occasions are met.

Description

technical field [0001] The present invention relates to high-speed (1MHz), high-reliability, long-distance transmission of serial port with expandable number of channels, in particular to realization of long-distance transmission based on FPGA (Field Programmable Gate Array, Field Programmable Gate Array) serial port and optical fiber mutual conversion . Background technique [0002] In the traditional serial port interconnection transmission system, the transmission medium between devices is directly connected by electric cables. Due to the poor anti-interference performance of electric cables and the short transmission distance (less than 10 meters), long-distance transmission cannot be satisfied. In recent years, with the development of optical fiber interconnection transmission technology, serial port devices based on optical fiber transmission have gradually appeared, but only a single serial port input and output transmission can be realized, and the transmission dista...

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Problems solved by technology

[0002] In the traditional serial port interconnection transmission system, the transmission medium between devices is directly connected by electric cables. Due to the poor anti-interference performance of electric cables and the short transmission distance (less than 10 meters), it cannot meet the requirements of long-distance transmission.

In recent years, with the development of optical fiber interconnection transmission technology, serial port devices based on optical fiber transmission have gradually appeared, but only a single serial port input and output transmission can be realized, and the transmission distance is short (about 300 meters), which cannot meet the needs of the project. High-speed (1MHz), high reliability, scalable multi-channel simultaneous long-distance transmission, failed to meet the transmission needs of longer distances (100 kilometers and above)

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