Abstract

We describe the results of the image transmission through the multimode optical fiber and photorefractive crystal LiNbO₃:Fe.Experiments were done with HeNe laser (λ =0.63μm), with multimode fiber of 70μm diameter, the aperture number 0.17 and 2m long. After passing an optical fiber light wave E₁ were mixed with another coherent wave E₂ at the photorefractive crystal. Amplitude mask was introduced in E₂ wave and a dynamic hologram was recorded in the crystal through photogalvanṁc effect /1/.Retrieval of this hologram was done by another counterpropagating wave E₃, which lead to difracted wave E₄ conjugated to E₁ with 1⊕% difraction efficiency after 3min. of hologram writing.

© 1991 Optical Society of America