Acoustic torsional waves used for coupling between optical polarization modes in optical fibers

Author

Engan, Helge E.

Author_Institution

Dept. of Phys. Electron., Norwegian Univ. of Sci. & Technol, Trondheim, Norway

Volume

2

fYear

1996

fDate

3-6 Nov 1996

Firstpage

799

Abstract

In an optical fiber the fundamental LP₀₁ spatial mode occurs in two polarization modes. Coupling between these polarization modes can be provided by acoustic torsional waves propagating along the fiber. This coupling is analyzed in detail. Analytic results of the coupling coefficients based on the combined effect of birefringence and photoelastic contributions are obtained. The results show that for regular fibers the birefringence component is the larger of the two. It has also been found that by using higher radial orders of the acoustic torsional modes the coupling efficiency can be increased

Keywords

acoustic waves; acousto-optical devices; birefringence; optical fibre couplers; optical fibre polarisation; photoelasticity; LP₀₁ spatial mode; acoustic torsional waves; birefringence; coupling coefficients; coupling efficiency; fibreoptic frequency shifters; optical fibers; optical polarization modes; photoelastic contributions; polarization mode coupling; radial orders; Acoustic propagation; Acoustic waves; Birefringence; Dispersion; Frequency; Optical coupling; Optical fiber polarization; Optical fibers; Optical propagation; Optical refraction;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 1996. Proceedings., 1996 IEEE

Conference_Location

San Antonio, TX

ISSN

1051-0117

Print_ISBN

0-7803-3615-1

Type

conf

DOI

10.1109/ULTSYM.1996.584115

Filename

584115