title: Inverse ion-exchange method for glass waveguide fabrication.
abstract: A new method, inverse ion exchange, is proposed and demonstrated for the fabrication of single-mode channel waveguides. In this method the channel waveguide is formed by backdiffusion of the refractive-index-increasing ions from an ion-exchanged planar waveguide. Finite-difference methods are used to model the fabrication technique and to calculate the field of the fundamental mode of the waveguide. It is also proved experimentally that single-mode waveguides can be fabricated with the the reinverse ion-exchange method using a 10-microm mask stripe width.
authors.forename: P
authors.initials: P
authors.lastname: Pöyhönen
authors.forename: S
authors.initials: S
authors.lastname: Honkanen
authors.forename: A
authors.initials: A
authors.lastname: Tervonen