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Asymmetrically and symmetrically coated tapered optical fiber for sensing applications
(SPIE, 2015)
Contribución a congreso / Biltzarrerako ekarpena,
The deposition of a non-metallic thin-film in a symmetrically coated tapered optical fiber leads to the generation of resonances due to guidance of a mode in the thin-film. At certain conditions, the resonances overlap ...
Analysis of radio wave propagation for ISM 2.4GHz wireless sensor networks in inhomogeneous vegetation environments
(2014)
Contribución a congreso / Biltzarrerako ekarpena,
The use of wireless networks has been extended in an exponential growing due to the improvement in terms of battery life and low consumption of the devices. However, it is highly important to conduct previous radio propagation ...
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 ...
Brillouin distributed sensing assisted by Brillouin amplification of pump pulses
(IEEE, 2014)
Contribución a congreso / Biltzarrerako ekarpena,
We demonstrate, for the first time to our knowledge, the extension of the measurement range of Brillouin distributed sensors (BDS) by using a distributed Brillouin amplifier (DBA) to compensate the attenuation of the ...
Phasorial DPP-BOTDA sensor tolerant to non-local effects
(SPIE, 2014)
Contribución a congreso / Biltzarrerako ekarpena,
We introduce a modification of the differential pulse width pair technique in a BOTDA sensor based on a phase modulated probe wave and RF demodulation. This provides a differential Brillouin phasorial signal with high ...
Polarization diversity for Brillouin distributed fiber sensors based on a double orthogonal pump
(SPIE, 2014)
Contribución a congreso / Biltzarrerako ekarpena,
We demonstrate a novel Brillouin optical time domain analysis sensor deploying a polarization diversity technique which eliminates the need for polarization scrambling, providing measurements that are largely immune to the ...
Synthesis of virtual Brillouin frequency shift profiles in BOTDA sensors using optical source dithering
(SPIE, 2014)
Contribución a congreso / Biltzarrerako ekarpena,
We demonstrate a novel concept for Brillouin optical time domain analysis sensors that is based on synthesizing a virtual Brillouin frequency shift profile along the sensing fiber. The technique is based on modulating the ...
Dynamic BOTDA measurements using Brillouin phase-shift
(SPIE, 2012)
Contribución a congreso / Biltzarrerako ekarpena,
We demonstrate a novel dynamic BOTDA sensor based, for the first time to our knowledge, on the use of the Brillouin phase-shift instead of the conventional Brillouin gain. This provides the advantage of measurements that ...
Comparison of State-of-Charge estimation methods for stationary Lithium-ion batteries
(IEEE, 2016)
Contribución a congreso / Biltzarrerako ekarpena,
An accurate monitoring of the State of Charge (SoC) is mandatory for an efficient management of a Lithium-ion battery. Batteries of stationary systems barely have long resting periods when the cumulative errors can be ...
On the stability criteria for inverter current control loops with LCL output filters and varying grid impedance
(IEEE, 2017)
Contribución a congreso / Biltzarrerako ekarpena,
The use of LC and LCL filters and grid impedance variations are creating new challenges on the controller design for current control loops of photovoltaic and wind turbine inverters. In the design process, stability criteria ...