DocumentCode
1010648
Title
Origin of spurious modes in the analysis of optical fibre using the finite-element or finite-difference technique
Author
Ching-Chuan Su
Author_Institution
National Taiwan University, Department of Electrical Engineering, Taipei, Republic of China
Volume
21
Issue
19
fYear
1985
Firstpage
858
Lastpage
860
Abstract
An origin of spurious modes in the finite-element or finite-difference analysis of optical fibres is found. Such spurious modes are due to the ill-condition in the resultant matrix equation, which occurs whenever the propagation constant approaches the average between the permittivities of two consecutive node points employed.
Keywords
difference equations; finite element analysis; optical fibres; optical waveguide theory; finite-difference technique; finite-element analysis; ill condition; matrix equation; node points; optical fibre; propagation constant; spurious modes;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19850606
Filename
4251408
Link To Document