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Modal cutoff conditions for a waveguide having an annular guiding region with a parabolically graded refractive‐index profile
Author(s) -
Ganguly S.,
Singh Kh. S.,
Pandey P. C.,
Ojha S. P.
Publication year - 1999
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(19990805)22:3<167::aid-mop6>3.0.co;2-9
Subject(s) - cutoff , cutoff frequency , refractive index , optics , waveguide , microwave , dielectric , modal , materials science , physics , optoelectronics , composite material , quantum mechanics
An annular dielectric waveguide having a truncated parabolically graded refractive‐index profile in the guiding region has been analytically studied for cutoff conditions. The thickness effect of the annular guiding region on the cutoff values of the z ‐component of the propagation constant for some lower order modes has been studied for some special cases. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 22: 167–171, 1999.