A quasi-optic model for the treatment of a planar dielectric waveguide having a substrate with material dispersion is presented. An application of the lowest-order waveguide mode to the development of an optical sensor for monitoring the thermal degradation of a film thickness is indicated.
© 1998 Optical Society of America
S. R. Seshadri, "Quasi-optics of a planar dielectric waveguide with a dispersive substrate," J. Opt. Soc. Am. A 15, 1952-1958 (1998)