One-way image transmission via distorting media and real-time interferometry in photorefractive crystal

Abstract

Two distinct topics are discussed, but they relate to the same general field: transmission of high quality information through a diffuser. The first topic is forward transmission of images through a distortion medium. The second topic is two-way information transmission through a multimode fiber as a basis for a fiber optic sensor.

Two-beam coupling on the reflection grating in a Bi12TiO20crystal

“…[4] that the diffraction eféciency of hologram recording in a Bi 12 TiO 20 crystal with orthogonal propagation of recording beams can be quite high (Z % 30 %). For reêection holographic gratings formed in the (111) cut of a Bi 12 TiO 20 crystal using counterpropagating light beams, Z 0X14 % for l 633 nm [5]. The two-beam coupling on reêection gratings in the (100) cut of doped Mn:Bi 12 TiO 20 and Cd:Bi 12 TiO 20 crystals was studied in Ref.…”