Abstract

The multiplicative and low-band-pass filtering characteristics of real-time holograms in photorefractive media are proposed for use for frequency-division demultiplexing. Several aspects of the frequency-demultiplexer are discussed and derived. These aspects are baseband demodulation of optical division limits, heterodyne cross talk, and nonlinear cross-talk effects that are due to images, demultiplexing and high-order nonlinearities. The nonlinear cross talk is calculated in two different approaches. second-Both approaches indicate that nonlinear effects enhance the performance of this demultiplexer.

© 1994 Optical Society of America

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