Abstract

Summary form only given. A new germanate glass containing GeO/sub 2/, Al/sub 2/O/sub 3/, Na/sub 2/O, BaO and rare-earth ions was designed and fabricated. Spectral properties of rare-earth ions were characterized. Slab waveguides were fabricated by immersing the samples into a molten salt bath containing AgNO/sub 3/. A variety of ion-exchange temperatures ranging from 2300 C to 3300 C and ion exchange times ranging from a few minutes to several hours were used to characterize the diffusion process. The effective mode indices were measured using the prism-coupler technique, and the index profile was calculated using the inverse WKB method.

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