Title :
Cutoff frequencies of W-type fibre with polynomial profile core
Author :
Yata, A. ; Ikuno, H.
Author_Institution :
Kumamoto University, Department of Information Engineering, Kumantoto, Japan
Abstract :
Cutoff frequencies of the guided modes in a graded-index fibre with a finitely thick cladding are calculated by a refined WKB method. The results are in good agreement with the exact ones for the parabolic core fibre. The effect of the fourth order correction to the parabolic core fibre on the cutoff frequency is evaluated.
Keywords :
WKB calculations; optical fibres; optical waveguide theory; W type fibre; WKB method; cutoff frequency; graded index fibre; guided modes; polynomial profile core; thick cladding;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19810008
