Abstract
We present a distributed Bragg reflector (DBR) Yb-doped fiber laser based on a pair of type IA fiber Bragg gratings (FBGs). The high temperature resistant gratings are fabricated in high absorption hydrogen loaded Yb-doped silica fiber by use of a 244 nm argon laser and phase mask method. The DBR laser, with only 10 mm cavity length, exhibits high signal-noise ratio (SNR) of over 50 dB and can survive at 450°C in a long term with stable output power and central wavelength. Besides, the laser has a relatively low temperature sensitivity of 8.9 pm/°C, which contributes to cross-sensitization of stress and temperature.
Original language | English |
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Pages (from-to) | 4474-4478 |
Number of pages | 5 |
Journal | Applied Optics |
Volume | 58 |
Issue number | 16 |
Early online date | 6 May 2019 |
DOIs | |
Publication status | Published - 31 May 2019 |