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9 November 2010 Methods for signal-to-noise ratio improvement on the measurement of temperature using BOTDR sensor
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Abstract
The signal-to-noise ratio (SNR) enhancement using polarization scrambler, narrowband-stop grating and cumulative average processing in Brillouin optical time domain reflectometer (BOTDR) is studied experimentally. Compared to the result without these methods, it is confirmed that these techniques can provide the SNR enhancement in our experiment. This makes it possible to perform a better detection threshold and resolution. The experiment result shows that a temperature resolution of 2°C with a spatial resolution of 3 m is achieved on our BOTDR sensor system.
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Jiacheng Hu, Bai Chen, Guoyang Li, and Zunqi Lin "Methods for signal-to-noise ratio improvement on the measurement of temperature using BOTDR sensor", Proc. SPIE 7853, Advanced Sensor Systems and Applications IV, 785309 (9 November 2010); https://doi.org/10.1117/12.869821
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