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Simplified Brillouin sensor for structural health monitoring applications based on passive optical filtering
(SPIE, 2015)
Contribución a congreso / Biltzarrerako ekarpena,
We present a simplified configuration for distributed Brillouin optical time domain analysis sensors. The technique is based on passive optical filtering of the spectral components generated in an RF-pulse-modulated optical ...
Enhanced tolerance to pulse extinction ratio in Brillouin optical time domain analysis sensors by dithering of the optical source
(SPIE, 2015)
Contribución a congreso / Biltzarrerako ekarpena,
We demonstrate the relaxation of the stringent requirements placed on the pulse extinction ratio in long-range Brillouin optical time-domain analysis sensors (BOTDA) by modulating the wavelength of the laser source that ...
Sources of noise in Brillouin optical time-domain analyzers
(SPIE, 2015)
Contribución a congreso / Biltzarrerako ekarpena,
This paper presents a thorough study of the different sources of noise affecting Brillouin optical time-domain analyzers (BOTDA), providing a deep insight into the understanding of the fundamental limitations of this kind ...
Brilloun optical time domain analysis sensor assisted by a Brillouin distributed amplifier
(SPIE, 2015)
Contribución a congreso / Biltzarrerako ekarpena,
We demonstrate the extension of the measurement range of Brillouin optical time-domain analysis (BOTDA)
sensors using a distributed Brillouin amplifier (DBA). The technique is based on injecting a DBA pump wave in
the ...
Mitigation of modulation instability in Brillouin distributed fiber sensors by using orthogonal polarization pulses
(SPIE, 2015)
Contribución a congreso / Biltzarrerako ekarpena,
A technique based on the use of orthogonally-polarized pulses is proposed to mitigate the detrimental impact of modulation
instability on Brillouin distributed fiber sensors. While the theoretical underpinnings of the ...
Overcoming non-local effects and Brillouin threshold limitations in Brillouin distributed sensors
(SPIE, 2015)
Contribución a congreso / Biltzarrerako ekarpena,
We demonstrate, for the first time to our knowledge, a Brillouin optical time domain analysis sensor that is able
to operate with a probe power larger than the Brillouin threshold of the deployed sensing fiber and that ...