Analysis of the guidance of electromagnetic waves by a deformed planar waveguide with parabolic cylindrical boundaries

Pankaj Kumar Choudhury, P. Khastgir, S. P. Ojha, L. K. Singh

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

An analytical study of a waveguide with two parabolic cylindrical surfaces separating the guiding region of refractive index n1 from two cladding regions of common refractive index n2 with n 1>n2 is presented. The cutoff conditions for modes are derived as equations containing trigonometric functions. The modes show a bunching tendency instead of well-defined discreteness, and several mode bunches occur because the distance of separation between the two interfaces does not remain constant but continues to increase as one moves away from the region near the vertices of the parabolas. Unlike the planar waveguide, a nonzero cutoff is deduced which may be attributed to the curvature of the boundaries, and the flare.

Original languageEnglish
Pages (from-to)5685-5688
Number of pages4
JournalJournal of Applied Physics
Volume71
Issue number11
DOIs
Publication statusPublished - 1992
Externally publishedYes

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electromagnetic radiation
waveguides
cut-off
refractivity
trigonometric functions
parabolas
bunching
flares
apexes
tendencies
curvature

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Analysis of the guidance of electromagnetic waves by a deformed planar waveguide with parabolic cylindrical boundaries. / Choudhury, Pankaj Kumar; Khastgir, P.; Ojha, S. P.; Singh, L. K.

In: Journal of Applied Physics, Vol. 71, No. 11, 1992, p. 5685-5688.

Research output: Contribution to journalArticle

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