Temperature stability of high Ge-doped fibre Bragg grating

Abstract

Temperature stability based on high Ge-doped fibre Bragg grating (FBG) is presented. A high Ge-doped photosensitive fibre (PSF) used for writing FBG was manufactured. Temperature characteristic of the FBG from 20 to 300 °C had been researched. The transmission efficiency is about 75% at 300 °C.