Abstract

A phase-conjugated wave can reconstruct the original field even through a phase-distorting medium. Making use of this characteristic, the author and others have proposed superimposing the transmitting field from a phase conjugator onto the phase-disorting medium region to obtain a good transmitted image quality regardless of the position of the distorted region. The method, however, is effective only when the phase-distorting region is represented by a single phase-distorting layer. A novel method is proposed to apply the image transmission system even for a general class of phase-distorting medium. The method consists of (1) imaging the transmitting field onto a plane in the middle of the phase-distorting medium region and (2) maximizing the factor of magnification of the imaging. The latter operation can further reduce the effects of the phase distortions through enhancing the lateral correlation. The principle is explained analytically with basic experimental results.

© 1988 Optical Society of America