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SNR Improvement in A Wireless Optical Differential Detector Using Plastic Fibers  

Lee Seong-Ho (Department of Electronic & Information Engineering Seoul National University of Technology)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.16, no.4, 2005 , pp. 410-417 More about this Journal
Abstract
In this paper, optical noise is reduced by a differential detector with a plastic optical fiber bundle in a wireless optical interconnection. A plastic optical fiber bundle divides the received optical signal equally and connects it to two photodiodes. In this configuration two photodiodes effectively detect the optical signal at one point, and the output voltage variation due to the abrupt change of optical noise distribution in space disappears. The signal to noise ratio in a differential detector with a fiber bundle was improved to be $10\;\cal{dB}$ higher than in a single photodiode with an optical filter.
Keywords
Plastic Optical Fiber Bundle; Optical Noise; Wireless Optical Interconnection;
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