%0 Journal Article 
%A Angulo Vinuesa, Xabier
%A Martín López, Sonia
%A Corredera, Pedro
%A González Herráez, Miguel
%T 100 km BOTDA temperature sensor with sub-meter resolution
%D 2012
%@ 0277-786X
%U http://hdl.handle.net/10017/26490
%X 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.
%K Brillouin scattering
%K Differential pulse-width pair technique
%K Distributed optic fiber sensor
%K Distributed Raman amplification
%K Raman scattering
%K Temperature sensor
%K Ciencias tecnológicas
%K Electrónica
%K Technology
%K Electronics
%~ Biblioteca Universidad de Alcala