title: High-temperature sustainability of strong fiber Bragg gratings written into Sb-Ge-codoped photosensitive fiber: decay mechanisms involved during annealing.
abstract: An antimony--germanium- (Sb--Ge-) codoped fiber specially designed for the fabrication of fiber Bragg gratings (FBGs) with high temperature sustainability has been developed. The photosensitivity and the high-temperature sustainability of FBGs that have been written into this fiber were tested. The results obtained showed that the FBG written into this fiber has a very high temperature sustainability of 900 degrees C. A decay mechanism that involves cation hopping is presented to explain the observed high temperature sustainability of the grating written into this fiber.
authors.affiliation: Department of Physics, Zhejiang University, Hangzhou 310027, China. physyh@dial.zju.edu.cn
authors.forename: Yonghang
authors.initials: Y
authors.lastname: Shen
authors.forename: Jinglei
authors.initials: J
authors.lastname: He
authors.forename: Tong
authors.initials: T
authors.lastname: Sun
authors.forename: Kenneth T V
authors.initials: KT
authors.lastname: Grattan