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
Original Manuscript: January 5, 1998
Revised Manuscript: February 26, 1998
Manuscript Accepted: February 27, 1998
Published: July 1, 1998
S. R. Seshadri, "Quasi-optics of a planar dielectric waveguide with a dispersive substrate," J. Opt. Soc. Am. A 15, 1952-1958 (1998)