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 °C. The strong fluorescence properties observed from this fiber are also examined.
© 2003 Optical Society of America
Yonghang Shen, Tong Sun, Kenneth T. V. Grattan, and Mingwu Sun, "Highly photosensitive Sb/Er/Ge-codoped silica fiber for writing fiber Bragg gratings with strong high-temperature sustainability," Opt. Lett. 28, 2025-2027 (2003)