Multi-wavelength Brillouin erbium-doped fiber laser sensor with high tunable temperature sensing coefficient
Optical and Quantum Electronics(2018)
摘要
multi-wavelength Brillouin erbium-doped fiber laser sensor is proposed and investigated experimentally. It is a linear laser cavity multi-wavelength fiber laser, formed by fixing two high-reflectivity Sangac loop mirrors at both ends. We investigate the laser system output characteristics and test the sensor performance for different temperature. Temperature/humidity and reliable linear-cavity fiber laser sensing operation were successfully achieved. Experimental results show that the temperature sensitivity is 27.15 MHz/ °C and the measurement error caused by frequency drift is about ± 0. 2 8 5 °C.
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关键词
Temperature sensor,Multi-wavelength Brillouin fiber laser,Fiber-laser sensor,High-order Stokes wavelength
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