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《Optoelectronic Technology》 2012-01
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Research on Acoustic-optic Frequency-shift Based Receiver for Laser Communication System

Wang Zhaolang,Xiao Shali,Huo Chang(Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China,Chongqing University,Chongqing 400030,CHN)  
A receiver of the laser communication system based on the acoustic-optic frequency-shift technology has been designed.With consideration of the spectrum characteristics of the transmitting signal,LC resonant circuit had been used to achieve the frequency selection and the digital down conversion had also been accomplished with the application of the D flip-flop.Furthermore,the signal demodulation was completed by FPGA.Verification test had been taken and the results met the design requirement,realizing the down conversion for the ASK signal with the centre frequency of 100 MHz and the base band signal demodulated.
【CateGory Index】: TN929.1
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