| This paper is related with the project : "The optical fiber transmission system of the wave-controlled signals" of the tenth five-year plan conducted by the Researching Institute of Electronics and Science of China .The system has the function of multiplexing and de-multiplexing of 40 channels' parallel wave-controlled digital signals,coding and decoding of optical fiber line code CIMT and optical transmission of high bit rate digital signal. The following work has been done.1 Scheming the system based on the system requirement, designing hardware circuits including signal source interface circuit,transmitting circuit,receiving circuit and Ethernet interface circuit, debugging them.2 Testing the BER with and without inter-symbol interference , analyzing the testing result.3 Testing system's stability by transmitting digital video signal .The system has excellent BER performance of 10～(11), which is much better than required; that is 10～(-9) ;what's more , the system has been tested by the experiment of transmitting 10Mbps Ethernet video data stream real time and approved by relative authorities . |
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