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Listar por autor "Hervás Peralta, Javier"

Mostrando ítems 1-16 de 16

(Invited) Cascade FBGs distributed sensors interrogation using microwave photonics filtering techniques

Ricchiuti, Amelia Lavinia; Hervás-Peralta, Javier; Sales Maicas, Salvador (Elsevier, 2016-03)

Systems to interrogate photonic sensors based on long fiber Bragg gratings (FBGs) are illustrated and experimentally validated. The FBGs-based devices are used as quasi-distributed sensors and have demonstrated their ability ...
An Interrogation Technique of FBG Cascade Sensors Using Wavelength to Radio-Frequency Delay Mapping

Hervás Peralta, Javier; Fernandez-Pousa, C.R.; Barrera Vilar, David; Pastor Abellán, Daniel; Sales Maicas, Salvador; Capmany Francoy, José (Institute of Electrical and Electronics Engineers (IEEE), 2015-06-01)

A technique is proposed to interrogate a distributed photonic sensor composed of seven standard fiber Bragg gratings in cascade. A microwave-modulated optical signal is launched into an FBG cascade and subsequently ...
Design of photonic sensors based on cavities and new interrogation techniques

Hervás Peralta, Javier (Universitat Politècnica de València, 2019-05-02)

[ES] Los sensores ópticos son dispositivos fotónicos sensibles a determinadas magnitudes que se usan precisamente para medir, ya sea de forma absoluta o relativa, esas magnitudes. Medir la temperatura, la presión, la ...
Estudio de dispositivos basados en FBG

Hervás Peralta, Javier (Universitat Politècnica de València, 2013-11-13)

Este proyecto se basa en el estudio de varios métodos de análisis de FBG¿s y el uso de esos métodos para analizar y diseñar reglas de síntesis para diversos dispositivos basados en FBG como las FBG con cambios de fase.
Fast Incoherent OFDR Interrogation of FBG Arrays Using Sparse Radio Frequency Responses

Clement, J.; Hervás-Peralta, Javier; Madrigal-Madrigal, Javier; Maestre, H; Torregrosa, G.; Fernandez-Pousa, Carlos R.; Sales Maicas, Salvador (Institute of Electrical and Electronics Engineers, 2018-10-01)

[EN] We present two implementations of fast, discrete incoherent optical frequency-domain reflectometers (I-OFDR) for the interrogation of equally spaced fiber Bragg grating (FBG) arrays, based on the determination of the ...
Fiber-distributed Signal Processing: Where the Space Dimension Comes into Play

Gasulla Mestre, Ivana; García-Cortijo, Sergi; Barrera Vilar, David; Hervás-Peralta, Javier; Sales Maicas, Salvador (Optical Society of America (OSA), 2017-07-27)

[EN] We implement "fiber-distributed signal processing" in the context of fiber-wireless communications by using different multicore fibers, providing both radio access distribution and microwave photonics signal processing ...
Filtro de MWP y sensor de temperatura basados en Draw Tower Gratings

Hervás Peralta, Javier (Universitat Politècnica de València, 2015-01-03)

Se presenta un filtro de fotónica de microondas y un sensor de temperatura basados en un dispositivo formado por 500 FBGs débiles en cascada. Se consigue un factor de calidad de 1440 y se pueden detectar eventos mayores ...
High-voltage Sensor Based on Fiber Bragg Grating in Fibers with Electrodes

Pereira, J. M. B.; Sartiano, Demetrio; Hervás, J.; Barrera, D.; Madrigal-Madrigal, Javier; Sales Maicas, Salvador; Laurell, F.; Tarasenko, O.; Margulis, W. (IEEE, 2020-05-15)

[EN] This work describes the use of FBGs inscribed in optical fiber with electrodes for voltage sensing. The results show a quadratic voltage dependence. The device can be explored for a multipoint, single-ended voltage ...
KLT Based Interrogation Technique for FBG Multiplexed Sensor Tracking

Hervás-Peralta, Javier; Tosi, Daniele; García-Miquel, Héctor; Barrera Vilar, David; Fernandez-Pousa, Carlos R.; Sales Maicas, Salvador (Institute of Electrical and Electronics Engineers, 2017)

[EN] The Karhunen-Loeve transform (KLT) is used to retrieve the wavelength information of several fiber Bragg gratings (FBGs) that are acting as a multiplexed sensor. The modulated light of a broadband source is launched ...
Liquid-air based Fabry-Pérot cavity on fiber tip sensor

Llera, Miguel; Aellen, Thierry; Hervás-Peralta, Javier; Salvade, Yves; Senn, Pascal; Le Floch, Sébastien; Keppner, Herbert (Optical Society of America, 2016-03-18)

[EN] This paper presents a Fabry-Perot fiber tip sensor based on an air-liquid filled cavity. The cavity is sealed off by a thin gold coated membrane of parylene C, between 300 and 350 nm, creating a particularly flexible ...
Microwave Photonics Filtering Interrogation Technique Under Coherent Regime For Hot Spot Detection on a Weak FBGs Array

Hervás-Peralta, Javier; Barrera Vilar, David; Madrigal-Madrigal, Javier; Sales Maicas, Salvador (Institute of Electrical and Electronics Engineers, 2018)

[EN] An interrogation technique of cascaded FBG sensors based on a microwave photonics filtering technique under coherent regime is presented. The sensing information of a 5-m fiber coil containing 500 weak FBG with a ...
Microwave photonics filtering technique for interrogating a very-weak fiber Bragg grating cascade sensor

Ricchiuti, Amelia Lavinia; Hervás Peralta, Javier; Barrera Vilar, David; Sales Maicas, Salvador; Capmany Francoy, José (Institute of Electrical and Electronics Engineers (IEEE), 2014-12)

A system to interrogate photonic sensors based on a very weak fiber Bragg grating cascade fiber is presented and experimentally validated and dedicated to detecting the presence and location of a spot event. The distributed ...
Microwave Photonics for Optical Sensors

Hervás-Peralta, Javier; Ricchiuti, Amelia Lavinia; Li, Wei; Zhu, Ning Hua; Fernandez-Pousa, Carlos R.; Sales Maicas, Salvador; Li, Ming; Capmany Francoy, José (Institute of Electrical and Electronics Engineers, 2017)

[EN] This paper presents a review and discussion of the applications of Microwave Photonic techniques and functionalities to the field of optical fiber sensors. A specific end-to end model for its characterization is ...
Microwave Signal Processing over Multicore Fiber

García Cortijo, Sergi; Barrera Vilar, David; Hervás-Peralta, Javier; Sales Maicas, Salvador; Gasulla Mestre, Ivana (MDPI AG, 2017)

[EN] We review the introduction of the space dimension into fiber-based technologies to implement compact and versatile signal processing solutions for microwave and millimeter wave signals. Built upon multicore fiber ...
MWP phase shifters integrated in PbS-SU8 waveguides

Hervás Peralta, Javier; Suárez Álvarez, Isaac; Perez, Joaquin; Rodríguez Cantó, Pedro Javier; Abargues, Rafael; Martinez-Pastor, J.P.; Sales Maicas, Salvador; Capmany Francoy, José (Optical Society of America, 2015-06-01)

[EN] We present new kind of microwave phase shifters (MPS) based on dispersion of PbS colloidal quantum dots (QDs) in commercially available photoresist SU8 after a ligand exchange process. Ridge PbS-SU8 waveguides are ...
Spatial Division Multiplexed Microwave Signal processing by selective grating inscription in homogeneous multicore fibers

Gasulla Mestre, Ivana; Barrera Vilar, David; Hervás-Peralta, Javier; Sales Maicas, Salvador (Nature Publishing Group, 2017)

[EN] The use of Spatial Division Multiplexing for Microwave Photonics signal processing is proposed and experimentally demonstrated, for the first time to our knowledge, based on the selective inscription of Bragg gratings ...