20 September 2002 Highspeed long-wavelength APDs for optical communication
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Abstract
Free space laser communication is essential to provide large capacity communication with a data rate from several hundreds of Mega-bits per second to a few Giga-bits per second. In order to realize the high-data-rate, the long wavelength APDs are demanded. A low noise APD enhances the detection of weak optical signal by amplifying the electrical current generated by absorbed photons. A study of the affects of the quantum efficiency, thermal noise levels, dark current and so forth are reported in. The greater photomultiplication and the optimum optical receiver sensitivity of the APDs are also discussed practically and theoretically. APDs bias voltage compensation operating intelligently in real time through fuzzy control technique and resisting the background light interference will be presented. Using the wavelet transform, a technique of detecting optical signal and emulation results, application conclusions are demonstrated.
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GuiFen Chen, GuiFen Chen, FuChang Yin, FuChang Yin, } "Highspeed long-wavelength APDs for optical communication", Proc. SPIE 4919, Advanced Materials and Devices for Sensing and Imaging, (20 September 2002); doi: 10.1117/12.471872; https://doi.org/10.1117/12.471872
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