AI Article Synopsis
- A distributed Bragg reflector (DBR) Yb-doped fiber laser is developed using type IA fiber Bragg gratings that are resistant to high temperatures.
- The gratings are made in a Yb-doped silica fiber using a 244 nm laser, resulting in a compact laser setup with a cavity length of only 10 mm.
- This DBR laser shows a strong signal-noise ratio (over 50 dB), can operate at temperatures up to 450°C, and has low temperature sensitivity, making it useful for sensing applications where stress and temperature may affect measurements.
Article 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.
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| http://dx.doi.org/10.1364/AO.58.004474 | DOI Listing |
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