title: Integrated optical ring resonators made by silver ion-exchange in glass.
abstract: The first (to our knowledge) integrated optical ring resonators to be fabricated using silver ion-exchanged waveguides are reported. Both circular and racetrack shaped resonators have been made, both types being capable of high finesse (>15) and efficiency (>90%). The circular resonators are much more difficult to make, however, requiring a double-diffusion process and precise control of the ion-exchange. For this reason, the racetrack resonators have been the more successful and have behaved exactly as expected from the previous work on losses and directional couplers.
authors.affiliation: University of Glasgow, Department of Electronics & Electrical Engineering, Glasgow G12 8QQ, Scotland, UK.
authors.forename: R G
authors.initials: RG
authors.lastname: Walker
authors.forename: C D
authors.initials: CD
authors.lastname: Wilkinson