High-temperature-resistant distributed Bragg reflector fiber laser written in Er/Yb co-doped fiber

Bai-Ou Guan, Yang Zhang, Hong-Jun Wang, Da Chen, Hwa-Yaw Tam
2008 Optics Express  
We present a high-temperature-resistant distributed Bragg reflector fiber laser photowritten in Er/Yb codoped phosphosilicate fiber that is capable of long-term operation at 500 o C. Highly saturated Bragg gratings are directly inscribed into the Er/Yb fiber without hydrogen loading by using a 193 nm excimer laser and phase mask method. After annealing at elevated temperature, the remained gratings are strong enough for laser oscillation. The laser operates in robust single mode with output
more » ... r more than 1 dBm and signal-to-noise ratio better than 70 dB over the entire temperature range from room temperature to 500 o C.
doi:10.1364/oe.16.002958 pmid:18542381 fatcat:psmumdxeuvactci65ppnb7au6i