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Proceedings Paper

100km BOTDA temperature sensor with sub-meter resolution
Author(s): Xabier Angulo-Vinuesa; Sonia Martin-Lopez; Pedro Corredera; Miguel Gonzalez-Herraez
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Paper Abstract

Temperature or strain sensing in long-range (> 70 km) Brillouin Optical Time Domain Analysis (BOTDA) below 2 meter resolution cannot be trivially achieved due to numerous matters such as fiber attenuation, self-phase modulation, depletion, resolution-uncertainty trade-offs, etc. In this paper we show that combining Raman assistance and the Differential Pulse-width Pair (DPP) technique sub-metrical resolution is achievable in a BOTDA over 100 km sensing range. We successfully demonstrate the detection of a 0.5 meter hot-spot in the position of worst contrast along the fiber.

Paper Details

Date Published: 17 October 2012
PDF: 4 pages
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842117 (17 October 2012); doi: 10.1117/12.974934
Show Author Affiliations
Xabier Angulo-Vinuesa, Consejo Superior de Investigaciones Científicas (Spain)
Sonia Martin-Lopez, Consejo Superior de Investigaciones Científicas (Spain)
Pedro Corredera, Consejo Superior de Investigaciones Científicas (Spain)
Miguel Gonzalez-Herraez, Univ. de Alcalá (Spain)


Published in SPIE Proceedings Vol. 8421:
OFS2012 22nd International Conference on Optical Fiber Sensors
Yanbiao Liao; Wei Jin; David D. Sampson; Ryozo Yamauchi; Youngjoo Chung; Kentaro Nakamura; Yunjiang Rao, Editor(s)

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