Photorefractivity of germanosilicate light guides

摘要

In the fabrication of single-mode germanosilicate light guides, we studied how a reducing atmosphere in the high-temperature compression process of fiber preforms in a modified chemical vapor deposition process affects the photorefractive properties of the light guides. The results indicate an increase in photorefractivity and a decrease in the fiber drawing temperature with additional doping of the core of the light guide with fluorine. (C) 2017 Optical Society of America