157-nm photosensitivity in germanosilicate planar waveguides

Summary form only given. This paper presents new results on the photosensitivity responses of waveguides and bulk glasses driven by 157 nm radiation from an F/sub 2/ laser. Single-mode slab waveguides were irradiated at various dose levels using a nitrogen-purged beam line. No enhancement techniques were employed to increase the photosensitivity response. Index changes were measured using a prism coupler technique (for waveguides) or by monitoring the diffraction efficiency of laser-induced Bragg gratings with a He-Ne laser probe beam. Surfaces were also examined by optical microscopy and atomic force microscopy (AFM).