Intrinsic modes in a wedge-shaped taper above an anisotropic substrate

Research output: Contribution to journalArticle

Abstract

Intrinsic modes yield exact solutions away from the tip in a wedge-shaped taper with penetrable boundaries. Unlike adiabatic modes, they are uncoupled and pass smoothly through the cutoff transition. This model has been generalized to accommodate stratified multiwave substrates and weakly range-dependent environments. Here, a wedge-shaped taper above an anisotropic substrate is considered. In the spectral representation of intrinsic modes, the plane wave reflection coefficient from the substrate depends on the orientation of the optic axis, which, in turn, affects the cutoff condition and the direction of the leakage field in the substrate. Since the phase propagation vector and average power flow vector are usually nonparallel in anisotropic media, the field in the substrate is substantially different from that in isotropic cases.

Original languageEnglish (US)
Pages (from-to)2373-2377
Number of pages5
JournalIEEE Journal of Quantum Electronics
Volume27
Issue number11
DOIs
StatePublished - Nov 1991

Fingerprint

tapering
wedges
Substrates
cut-off
Anisotropic media
wave reflection
anisotropic media
Optics
plane waves
leakage
optics
reflectance
propagation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Physics and Astronomy (miscellaneous)

Cite this

Intrinsic modes in a wedge-shaped taper above an anisotropic substrate. / Lu, I-Tai.

In: IEEE Journal of Quantum Electronics, Vol. 27, No. 11, 11.1991, p. 2373-2377.

Research output: Contribution to journalArticle

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