Highly photosensitive Sb/Er/Ge-codoped silica fiber for writing fiber Bragg gratings with strong high-temperature sustainability.
A highly photosensitive Sb/Er/Ge-codoped silica fiber for fabricating fiber Bragg gratings (FBGs) with strong high-temperature sustainability is presented. The photosensitivity and the high-temperature sustainability of FBGs created in this fiber are examined and compared with those produced in a Sn-doped silica fiber. The results show that the Sb/Er/Ge fiber has a much higher level of photosensitivity than the Sn-doped silica fiber and that the FBGs have a similar high-temperature sustainability of 800 degrees C. The strong fluorescence properties observed from this fiber are also examined.
Department of Physics, Zhejiang University, Hangzhou 310027, China. physyh@dial.zju.edu.cn
Yonghang
Y
Shen
Tong
T
Sun
Kenneth T V
KT
Grattan
Mingwu
M
Sun