We have used phase conjugation to compensate phase distortions and depolarization introduced in multimode fibers having 2-m lengths and 400-μm core diameters. The experiment was performed at a wavelength of 1.064 μm, and we achieved phase conjugation using Brillouin-enhanced four-wave mixing in a 0.8-mm-core hollow quartz lightguide filled with TiCl4. The far-field conjugation fidelity was 70%, and the residual depolarization was <1%. Comparable compensation was achieved by use of either a graded-index or a step-index fiber.
© 1994 Optical Society of America
Original Manuscript: May 31, 1994
Published: November 1, 1994
S. C. Matthews and D. A. Rockwell, "Correction of phase and depolarization distortions in a multimode fiber at 1.064 μm with stimulated-Brillouin-scattering phase conjugation," Opt. Lett. 19, 1729-1731 (1994)