Title :
Cutoff frequencies of vector wave modes in cladded inhomogeneous optical fibre
Author_Institution :
Osaka Electro-Communication University, Department of Applied Electronic Engineering, Neyagawa, Japan
Abstract :
Asymptotic vector wave formulas for calculating the cutoff frequencies in optical fibres with graded-index core and uniform cladding are derived. Numerical examples are given in comparison with the scalar wave solutions, in order to show that the mode degeneracy present in the regime of scalar wave approximations is removed and the cutoff values in degenerate states split slightly.
Keywords :
optical fibres; optical waveguide theory; asymptotic vector wave formula; graded index core; optical fibres; scalar wave approximations; uniform cladding;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19800574
