Contributed Papers

Applied Physics B

, Volume 38, Issue 3, pp 171-178

First online:

Electromagnetic propagation at interfaces and in waveguides in uniaxial crystals

Surface impedance/admittance approach
  • A. KnoesenAffiliated withSchool of Electrical Engineering, Georgia Institute of Technology
  • , M. G. MoharamAffiliated withSchool of Electrical Engineering, Georgia Institute of Technology
  • , T. K. GaylordAffiliated withSchool of Electrical Engineering, Georgia Institute of Technology

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Abstract

The use of surface-impedance and surface-admittance concepts for analyzing reflection and refraction at an isotropic dielectric interface (first developed about 1938) is extended to include an interface between uniaxial birefringent dielectrics. Total internal reflection and the polarizing (Brewster) angle at an anisotropic interface are shown to be naturally explainable in terms of surface impedance (for TM polarization) and surface admittance (for TE polarization). The allowable modes in an integrated optical uniaxial asymmetric dielectric slab waveguide are also shown to be directly obtainable using the surface impedance/admittance approach. Numerical examples are presented.

PACS

42.10.Qj 42.80.Lt 42.82+n