Abstract
Phase-conjugated light waves are known to reverse phase distortions in media with negligible absorption or for paraxial beam propagation.1 We examine here a different case in which a volume conjugating medium is itself imperfect, possessing phase distortions and a conjugating efficiency dependent on grating spatial frequency. We show theoretically that for multiplexed signals, cross-talk-free phase conjugation is obtained only for negligible spatial-frequency dispersion and a phase-conjugated reference wave. We further present experimental results in a severely striated sample of photorefractive strontium barium niobate; using a phase-conjugated reference wave, we demonstrate the alleviation of distortion2 and the elimination of cross talk between closely spaced angularly multiplexed signals.
© 1992 Optical Society of America
PDF ArticleMore Like This
M. C. Bashaw, A. Aharoni, and L. Hesselink
FA4 Nonlinear Optics (NLO) 1992
Francis T. S. Yu, Shudong Wu, and Andrew Mayers
MV2 OSA Annual Meeting (FIO) 1988
Francis T. S. Yu, Shudong Wu, and Andrew Mayers
TUP4 OSA Annual Meeting (FIO) 1988