OPTO-IT

Modulation instability of packets in inhomogeneous light guides

I. O. Zolotovskii, V. A. Lapin, D. I. Sementsov

Ulyanovsk State University

Abstract: The conditions of the modulation instability of a wave packet in a two-mode fiber c exponential profile heterogeneity group velocity dispersion along the length of the fiber have been investigated. The analytical expressions of the integral gain increment of harmonic disturbances, and other important characteristics that determine the dynamics of the modulational instability of two interacting modes in an optical fiber with a given type of heterogeneity were obtained.

Keywords: wave packet, intermode interaction, group-velocity dispersion, cubic nonlinearity, gain increment.

Received: 02.10.2012