title: Optical waveguides formed by thermal migration of ions in glass.
abstract: We present our results on optical waveguides formed by thermal diffusion of ions in glass. It was found that the peak of the ion-exchanged region can be shifted into the substrate interior by limiting the diffusion process. We also found that low loss films (<0.1 dB/cm) can be fabricated using this process and that the modal losses in these films do not agree with those losses predicted by existing theories. Also, the ion-exchange process has proved to be a simple means for fabricating tapered-edge couplers.
authors.forename: T G
authors.initials: TG
authors.lastname: Giallorenzi
authors.forename: E J
authors.initials: EJ
authors.lastname: West
authors.forename: R
authors.initials: R
authors.lastname: Kirk
authors.forename: R
authors.initials: R
authors.lastname: Ginther
authors.forename: R A
authors.initials: RA
authors.lastname: Andrews