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Proceedings Paper

High-speed long-wavelength APDs for optical communication
Author(s): GuiFen Chen; FuChang Yin
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Paper 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.

Paper Details

Date Published: 20 September 2002
PDF: 4 pages
Proc. SPIE 4919, Advanced Materials and Devices for Sensing and Imaging, (20 September 2002); doi: 10.1117/12.471872
Show Author Affiliations
GuiFen Chen, Changchun Institute of Optics and Fine Mechanics (China)
FuChang Yin, Changchun Institute of Optics and Fine Mechanics (China)


Published in SPIE Proceedings Vol. 4919:
Advanced Materials and Devices for Sensing and Imaging
Jianquan Yao; Yukihiro Ishii, Editor(s)

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