We propose a new method for one-way multipixel image transmission through a multimode optical fiber (MOF). The method is based on the two-pass method, in which a light field bearing an image makes a round trip through a MOF. One-way multipixel image transmission can be realized even through a long and/or winding MOF in which the fiber modes are strongly scrambled with a tandem arrangement of two photorefractive crystals to generate a precise phase-conjugated wave. In this study, images of two pixels (2-bit data) are transmitted through a 100-m MOF more than 20 times for one recording of holograms onto a photorefractive Bi<sub>12</sub>SiO<sub>20</sub> crystal. We also show that a reference beam with a distorted wave front can be utilized, which is transmitted by another MOF instead of a single-mode optical fiber.
© 1997 Optical Society of America
Yutaka Hara, Kazuyoshi Hoshino, Masayuki Yonemura, and Tomohide Niimi, "Parallel interconnection through a multimode optical fiber with a tandem arrangement of two photorefractive crystals," J. Opt. Soc. Am. B 14, 1453-1457 (1997)