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Weak guidance modal cutoff analysis of a waveguide having a core cross section bounded by nonconcentric circles
Author(s) -
Singh U. K.,
Khastgir P.,
Singh O. N.
Publication year - 1997
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(19970620)15:3<179::aid-mop17>3.0.co;2-2
Subject(s) - cutoff , bounded function , modal , cross section (physics) , cutoff frequency , waveguide , modal analysis , section (typography) , microwave , computation , physics , core (optical fiber) , concentric , optics , mathematical analysis , mathematics , acoustics , geometry , computer science , algorithm , quantum mechanics , materials science , polymer chemistry , vibration , operating system
We make an analytical study of the modal cutoff behavior of a waveguide with an annular core cross section bounded by two nonconcentric circles. The characteristic and cutoff equations ae obtained with the use of the weak guidance approximation. Numerical computations show that the number of modes sustained is lowered as the concentric annular cross section becomes nonconcentric. © 1997 John Wiley & Sons, Inc. Microwave Opt Technol Lett 15: 179–184, 1997.