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Indexed by:会议论文

Date of Publication:2009-09-15

Included Journals:EI、CPCI-S、Scopus

Volume:7133

Key Words:fiber Bragg gratings; fiber lasers; fiber optic sensors; high temperature sensors

Abstract:We present a high-temperature-resistant distributed Bragg reflector fiber laser photowritten in Er/Yb codoped fiber that is capable of long-term operating at 500 degrees C. Highly saturated Bragg gratings are directly inscribed into the active fiber by use of the two-photon absorption at 193 nm. After annealing at elevated temperature, the stabilized gratings are strong enough for laser oscillation. The laser operates in robust single mode with output power more than 1 dBm and signal-to-noise ratio better than 70 dB over the entire temperature range from room temperature to 500 degrees C.