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Interferometric vs wavelength selective optical fiber sensors for cryogenic temperature measurements
(SPIE, 2017)
info:eu-repo/semantics/conferenceObject,
In this work, a preliminary study of the behavior of two different interferometric fiber optic sensors and two different wavelength selective fiber optic sensors is performed. A photonic cristal fiber Fabry-Pérot interferometer, ...
SnO2-MOF-Fabry-Pérot humidity optical sensor system based on Fast Fourier transform technique
(SPIE, 2016)
info:eu-repo/semantics/conferenceObject,
In this paper, a new sensor system for relative humidity measurements based on a SnO2 sputtering deposition on a microstructured optical fiber (MOF) low-finesse Fabry-Pérot (FP) sensing head is presented and characterized. ...
High-resolution transversal load sensor using a random distributed feedback fiber laser
(SPIE, 2016)
info:eu-repo/semantics/conferenceObject,
In this work, a new application of random distributed feedback lasers to fiber optic sensing has been presented. The particular properties of these lasers, such as the lack of longitudinal modes and high stability, have ...
Modulated fiber ring laser and its application in high-sensitivity temperature sensors
(SPIE, 2016)
info:eu-repo/semantics/conferenceObject,
This work presents an experimental demonstration of a scheme based on an internally modulated fiber ring laser for high-sensitivity temperature sensing. The attained temperature resolution has been as low as ± 2pm even ...
Random fiber lasers: application to fiber optic sensors networks
(IEEE, 2017)
info:eu-repo/semantics/conferenceObject,
Recently, random mirrors have been proposed as a method to create fiber laser cavities. This kind of cavity is based on cooperative Rayleigh scattering, which is generated along a fiber due to the material inhomogeneities ...
Optical power-based interrogation of plasmonic tilted fiber Bragg grating biosensors
(SPIE, 2017)
info:eu-repo/semantics/conferenceObject,
Two interrogation techniques for plasmonic tilted fiber Bragg grating sensors are reported and experimentally tested. Typical interrogation methods are usually based on tracking the wavelength shift of the most sensitive ...
Polyaniline deposition on tilted fiber Bragg grating for pH sensing
(SPIE, 2017)
info:eu-repo/semantics/conferenceObject,
In this paper, we present the results of a new pH sensor based on a polyaniline (PAni) coating on the surface of a tilted fiber Bragg grating. The pH-sensitive PAni was deposited by in situ chemical oxidative polymerization. ...
Simultaneous temperature and vibration monitoring using an all-PM fiber loop mirror interferometer
(SPIE, 2017)
info:eu-repo/semantics/conferenceObject,
In this work, an all-polarization maintaining fiber loop mirror interferometer is presented and validated as vibration and temperature sensor without crosstalk between measurands. The system is entirely built using ...
Relative humidity multi-point optical sensors system based on Fast Fourier multiplexing technique
(SPIE, 2017)
info:eu-repo/semantics/conferenceObject,
In this paper, a new multipoint optical fiber system for relative humidity measurements based on Sn02-FP (Fabry-Pérot) sensing heads and an optical interrogator as single active device is presented and characterized. The ...
Simultaneous and quasi-independent strain and temperature sensor based on microstructured optical fiber
(SPIE, 2017)
info:eu-repo/semantics/conferenceObject,
In this paper, a new sensor system for simultaneous and quasi-independent strain and temperature measurements is presented. The interrogation of the sensing head has been carried out by monitoring the FFT phase variations ...