title: Strip-loaded waveguide using an underlay.
abstract: We describe how an ion-exchange waveguide was used as a strip-loading region for a planar polymer waveguide. The loading strip forms an underlay that is well preserved in the substrate. Some branching-channel waveguides were formed by this method, and wall losses were measured. The result shows that the wall losses decrease as a result of strip loading.
authors.forename: K V
authors.initials: KV
authors.lastname: Avudainayagam
authors.forename: A
authors.initials: A
authors.lastname: Selvarajan