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.

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