title: Propagation characteristics of trapezoidal cross-section ridge optical waveguides: an experimental and theoretical investigation.
abstract: A detailed experimental and theoretical study of narrow ridge waveguides in glass films formed by ion-etching of patterns in photoresist has been carried out. Because the resultant waveguide profiles are trapezoidal a numerical approach, the finite-element method, has been used to compute theoretical dispersion curves. Experimental dispersion curves were obtained from measurements of output m-lines. Agreement between experiment and theory varies from moderately good to excellent over the range of waveguide profiles studied.
authors.forename: P M
authors.initials: PM
authors.lastname: Pelosi
authors.forename: P
authors.initials: P
authors.lastname: Vandenbulcke
authors.forename: C D
authors.initials: CD
authors.lastname: Wilkinson
authors.forename: R M
authors.initials: RM
authors.lastname: De La Rue