Measurement accuracy enhancement of distributed Brillouin sensors based on gain spectrum engineering

Cheng Feng; Xin Lu; Stefan Preussler; Thomas Schneider

doi:10.1117/12.2538900

28 August 2019 Measurement accuracy enhancement of distributed Brillouin sensors based on gain spectrum engineering

Cheng Feng, Xin Lu, Stefan Preussler, Thomas Schneider

Proceedings Volume 11199, Seventh European Workshop on Optical Fibre Sensors; 111991S (2019) https://doi.org/10.1117/12.2538900
Event: Seventh European Workshop on Optical Fibre Sensors, 2019, Limassol, Cyprus

Abstract

We present for the first time, to the best of our knowledge, a novel method to improve the measurement accuracy of Brillouin optical time-domain analyzers (BOTDA) by engineering the gain spectrum of the Brillouin interaction. As will be shown, the engineered spectrum shape is more robust against noise and leads to a doubled frequency accuracy of the sensor. Since with the proposed method the frequency error is less susceptible to the intrinsic fiber loss, the sensing range can be extended by up to 60%. This work might open a new way to improve the BOTDA sensing performance with an engineered spectrum shape.

Citation Download Citation

Cheng Feng, Xin Lu, Stefan Preussler, and Thomas Schneider "Measurement accuracy enhancement of distributed Brillouin sensors based on gain spectrum engineering", Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111991S (28 August 2019); https://doi.org/10.1117/12.2538900

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