Vector normal modes on two-core optical fibers. I. The normal mode solutions

Author

Chang, Chih-Sheng ; Chang, Hung-Chun

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan

Volume

15

Issue

7

fYear

1997

fDate

7/1/1997 12:00:00 AM

Firstpage

1213

Lastpage

1224

Abstract

A vector theory based on the circular harmonics expansion method combined with the finite-element method is formulated to solve the guided normal modes on the two-core fiber with radially inhomogeneous core index profiles. Numerical examples are given for the two-identical-core cases with power-law core index profiles. Polarization patterns for the vector modes on the strongly guiding two-core fiber structure, such as that of a fused coupler made with biconical tapering technology under weakly fusing condition, are presented

Keywords

finite element analysis; optical fibre couplers; optical fibre polarisation; optical fibre theory; vectors; circular harmonics expansion method; finite-element method; fused coupler; guided normal modes; normal mode solutions; polarization patterns; power-law core index profiles; radially inhomogeneous core index profile; strongly guiding two-core fiber structure; two-core optical fibers; vector normal modes; vector theory; weakly fusing condition; Chemical technology; Finite element methods; Optical fiber couplers; Optical fiber polarization; Optical fiber theory; Optical fibers; Optical refraction; Optical surface waves; Optical variables control; Optical waveguides;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.596968

Filename

596968