Hp. Urbach, ANALYSIS OF THE DOMAIN INTEGRAL OPERATOR FOR ANISOTROPIC DIELECTRIC WAVE-GUIDES, SIAM journal on mathematical analysis, 27(1), 1996, pp. 204-220
The domain integral equation for guided electromagnetic waves in aniso
tropic inhomogeneous guides is formulated. The spectral properties of
the noncompact integral operator are analysed and the existence of gui
ded modes is proved for lossless nonmagnetic media.