High-temperature sustainability of strong fiber Bragg gratings written into Sb-Ge-codoped photosensitive fiber: decay mechanisms involved during annealing

Yonghang Shen; Jinglei He; Tong Sun; Kenneth T V Grattan

doi:10.1364/ol.29.000554

High-temperature sustainability of strong fiber Bragg gratings written into Sb-Ge-codoped photosensitive fiber: decay mechanisms involved during annealing

Opt Lett. 2004 Mar 15;29(6):554-6. doi: 10.1364/ol.29.000554.

Authors

Yonghang Shen¹, Jinglei He, Tong Sun, Kenneth T V Grattan

Affiliation

¹ Department of Physics, Zhejiang University, Hangzhou 310027, China. physyh@dial.zju.edu.cn

PMID: 15035468
DOI: 10.1364/ol.29.000554

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.