Vector normal modes on two-core optical fibers. II. The modal cutoffs

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

1225

Lastpage

1232

Abstract

For pt.I see ibid., vol.15, no.7, p.1213-24 (1997). A vector theory based on generalization of the circular harmonics expansion method combined with the finite-element method is formulated to determine cutoff values for higher-order normal modes on the two-core fiber with radially inhomogeneous core index profiles. The method is developed under the transverse magnetic field formulation in order to avoid the spurious solutions. Numerical examples are given for the two-identical-core cases with power-law core index profiles

Keywords

finite element analysis; optical fibre theory; vectors; circular harmonics expansion method; cutoff values; finite-element method; higher-order normal modes; modal cutoffs; power-law core index profiles; radially inhomogeneous core index profiles; transverse magnetic field formulation; two-core optical fibers; two-identical-core cases; vector normal modes; vector theory; Laplace equations; Magnetic cores; Magnetic fields; Optical fiber couplers; Optical fiber polarization; Optical fiber theory; Optical fibers; Optical waveguide theory; Optical waveguides; Propagation constant;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.596969

Filename

596969