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Ultra-long (275 km) random distributed feedback fiber laser for remote sensor monitoring
(Optical Society of America, 2018)
info:eu-repo/semantics/conferenceObject,
An interferometric sensor located 275 km away from the monitoring station has been interrogated by a double-pumped random distributed feedback fiber laser, reaching the longest distance in fiber optic remote sensing reported ...
High sensitivity fiber-optic liquid level sensor using biconical tapered fibers
(Optical Society of America, 2018)
info:eu-repo/semantics/conferenceObject,
A liquid level sensor is presented using a biconical tapered standard single-mode fiber, being its main characteristic an outstanding sensitivity for a low cost transducer. Temperature compensation is enabled with the same ...
Gamma radiation measurements using an optical fiber laser
(Optical Society of America, 2018)
info:eu-repo/semantics/conferenceObject,
A fiber ring laser cavity configuration was used to analyze the effect of gamma-irradiation over the performance of different types of erbium doped fibers. Preliminary results validates this method to monitor gamma-radiation ...
Microstructured optical fiber sensor for soil moisture measurements
(Optical Society of America, 2018)
info:eu-repo/semantics/conferenceObject,
A discrete sensor based on a Sn0₂-FP (Fabry-Pérot) cavity is presented and characterized in real soil conditions. Results are compared, for the first time to our knowledge, with a commercial capacitive sensor and gravimetric ...
Programmable retiming of an optical clock signal using the temporal Talbot effect
(IEEE, 2019)
info:eu-repo/semantics/article,
By using a Fourier processor based on the temporal Talbot effect and the properties of the Discrete Fourier Transform, we propose a scheme that adds an adjustable delay to a train of pulses while simultaneously preserving ...
DC capacitance reduction in three-phase photovoltaic inverters by using virtual impedance emulation
(IEEE, 2019)
info:eu-repo/semantics/conferenceObject,
DC voltage regulation in grid-connected three-phase PV inverters is a fundamental requirement. In order to reduce the influence of the PV non-linear behavior and ensure stability in the whole operating range, the input ...
Spectral shadowing suppression technique in phase-OTDR sensing based on weak fiber Bragg grating array
(Optical Society of America, 2019)
info:eu-repo/semantics/article,
A postprocessing procedure is presented to suppress spectral shadowing in phase-OTDR sensing systems based on a weak fiber Bragg grating array. A complete theoretical analysis of the interfering signals has been carried ...
Layer-by-layer nano-assembly: a powerful tool for optical fiber sensing applications
(MDPI, 2019)
info:eu-repo/semantics/article,
The ability to tune the composition of nanostructured thin films is a hot topic for the design of functional coatings with advanced properties for sensing applications. The control of the structure at the nanoscale level ...
Intelligent control of wind-assisted PHEVs smart charging station
(MDPI, 2019)
info:eu-repo/semantics/article,
Two technology opportunities, integration of renewable energy sources and the electrification of vehicles are being encouraged to reduce dependency on fossil fuels and pollution problems. Nevertheless, the huge increase ...
Improved strategies for HPE employing learning-by-synthesis approaches
(IEEE, 2018)
info:eu-repo/semantics/conferenceObject,
The first contribution of this paper is the presentation of a synthetic video database where the groundtruth of 2D facial landmarks and 3D head poses is available to be used for training and evaluating Head Pose Estimation ...