title: Ultraviolet photolytic-induced changes in optical fibers: the thermal expansion coefficient.
abstract: We show that recent experimental results of Wong et al. [Opt. Lett. 17, 1773 (1992)] on the effect of UV photolytic processing on the birefringence of elliptical-core fibers arise from a 15-30% reduction of the coefficient of thermal expansion of the germanosilicate core. An explanation based on reconfiguration of the glass network to minimize the stress energy during UV processing is proposed.
authors.forename: K S
authors.initials: KS
authors.lastname: Chiang
authors.forename: M G
authors.initials: MG
authors.lastname: Sceats
authors.forename: D
authors.initials: D
authors.lastname: Wong