Photorefractive polarization couplers in elliptical core fibres

Author

Kanellopoulos, S.E. ; Valente, L.C.G. ; Handerek, V.A. ; Rogers, A.J.

Author_Institution

Dept. of Electron. & Electr. Eng., King´´s Coll. London, UK

Volume

3

Issue

9

fYear

1991

Firstpage

806

Lastpage

809

Abstract

Photorefractive polarization couplers written internally in germanium-doped elliptical core fibers at 488, 514, and 532 nm are reported. Complete power transfer between the orthogonal polarization modes of the fiber was achieved for couplers written at 514 and 488 nm, respectively. It is shown that the couplers are nonuniform in length because of the high photoinduced attenuation and also due to two-photon absorption. Polarization coupling of higher order modes is also demonstrated at shorter wavelengths where their polarization beat lengths match the polarization beat length of the fundamental mode at which the coupler was written.<>

Keywords

light polarisation; optical couplers; optical fibres; photorefractive effect; 488 nm; 514 nm; 532 nm; elliptical core fibres; fundamental mode; high photoinduced attenuation; higher order modes; orthogonal polarization modes; photorefractive polarization couplers; polarization beat lengths; power transfer; two-photon absorption; Absorption; Anisotropic magnetoresistance; Attenuation; Birefringence; Heating; Helium; Optical fiber couplers; Optical fiber polarization; Photorefractive effect; Writing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.84500

Filename

84500