NDLI: Companding nonlinearities in optical signal processing

Content Provider	IEEE Xplore Digital Library
Author	Khoury, J. Cronin-Golomb, M. Woods, C.
Copyright Year	1994
Description	Author affiliation: Tufts Univ., Medford, MA, USA (Khoury, J.)
Abstract	Compression, expansion and rectification are well established noise reduction techniques in digital electronic communication systems. Photorefractive crystals provide high-resolution, real-time, low-power, parallel-nonlinear optical devices for performing these operations, and, in the last decade, considerable progress has been achieved in designing photorefractive devices with various functions and performance. We have recently proposed and demonstrated several photorefractive nonlinear techniques for reducing the following forms of noise: (1) additive random noise; (2) additive signal dependent noise; and (3) multiplicative zero mean complex noise. These noniinear approaches to noise reduction are not limited to photorefractives and may be implemented by alternative optical nonlinear technologies. In this paper, we present general optical nonlinear models for these noise reduction techniques and compare them with our photorefractive experiments.
Starting Page	147
Ending Page	148
File Size	141424
Page Count	2
File Format	PDF
ISBN	0780314700
DOI	10.1109/LEOS.1994.586936
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-10-31
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical signal processing Noise reduction Additive noise Optical noise Photorefractive effect Photorefractive materials Nonlinear optics Crystals Optical devices Optical design
Content Type	Text
Resource Type	Article

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