PHYSICS

Collinear acousto-optical interaction of twofold-degenerated modes of bi-refractive optical fiber-optical waveguides

G. V. Kulak, A. E. Anisimova

I.P. Shamyakin Mozyr State Pedagogical University, Mozyr

Abstract: Acousto-optical transformation of linearly polarized ($LP_{0m}$) modes of fiber-optic waveguides placed into external electrical field and made from the material in which it is possible to achieve transverse electro-optical effect is investigated. The possibility of simultaneous acousto- and electro-optical polarization-independent light modulation by the longitudinal acoustic mode $L_{01}$ of a cylindrical waveguide is shown. The possibility of the application of the acousto-optical transformation of such a mode transformation with indicated properties for construction of tunable acousto-optical filters is stated.

Keywords: optical fibers, acousto-optical interaction, electro-optical effect, light modulation.

UDC: 535.42:534.8

Received: 29.08.2011