Abstract

A matrix method for calculating the effective refractive index of guided modes on multilayer dielectric waveguides is developed and employed to calculate the effective electro-optic coefficient of such waveguide structures when one of the media composing them is electro-optic. In properly specified three-layer waveguides, enhancement of the effective electro-optic coefficient above the bulk value by as much as a factor equal to the square of the highest refractive index in the structure is possible. The maximum modulation enhancement for the three-layer guide is attainable with loosely, as well as with tightly, confined waveguide modes.

© 1976 Optical Society of America

Modulation-sensitivity enhancement in electro-optic slab waveguides

James F. Lotspeich
J. Opt. Soc. Am. 65(7) 797-803 (1975)

Nonlinearity of effective index versus bulk index in multilayer dielectric waveguides: Large incremental effective index sensitivity*

A. B. Buckman
J. Opt. Soc. Am. 67(9) 1187-1191 (1977)

Effects of a thin overlying film on optical waveguides and couplers*

Denis Vincent and John W. Y. Lit
J. Opt. Soc. Am. 66(3) 226-232 (1976)

Optical waveguide loaded with high refractive-index strip film

Naoya Uchida
Appl. Opt. 15(1) 179-182 (1976)

Propagation properties of a multilayer optical waveguide with an attenuating sheet

M. Bertolotti, M. Galeotti, and D. Sette
Appl. Opt. 15(3) 802-804 (1976)