Abstract

We report on the fabrication of a thermally resistant ultra-short distributed Bragg reflector (DBR) fiber laser based on the photo inscription of two wavelength-matched type IIa gratings in a thin-core Er-doped fiber. With continuous UV exposure, each Bragg reflector initially grows as a type I grating, followed by decay in strength, and then re-grows as a type IIa grating with enhanced thermal resistance. The DBR laser, with an entire length of 13 mm, can stably operate at 600°C with single longitude mode, which provides potential applications in high temperature environments.

© 2015 Optical Society of America

Type IIa Bragg gratings formed in microfibers

Yang Ran, Long Jin, Shuai Gao, Li-Peng Sun, Yun-Yun Huang, Jie Li, and Bai-Ou Guan
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Ultra-short DBR fiber laser with high-temperature resistance using tilted fiber Bragg grating output coupler

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High temperature resistant ultra-short DBR Yb-doped fiber laser

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Compact polarimetric heterodyning DBR fiber laser sensor with high temperature resistance

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Thermally triggered fiber lasers based on secondary-type-In Bragg gratings

Fu-Rong Feng, Yang Ran, Yi-Zhi Liang, Shuai Gao, Yuan-Hua Feng, Long Jin, and Bai-Ou Guan
Opt. Lett. 41(11) 2470-2473 (2016)