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Listar por palabra clave "Fiber Bragg gratings"

Mostrando ítems 1-20 de 34

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(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 ...
Analysis of the strain transfer in a new FBG sensor for Structural Health Monitoring

Torres Górriz, Benjamín; Paya-Zaforteza, I.; Calderón García, Pedro Antonio; Adam Martínez, José Miguel (Elsevier, 2011-02)

Structural Health Monitoring (SHM) is a topic of great interest in structural engineering due to the ageing of the built infrastructures and the growing use of innovative structural systems and construction materials. ...
Bragg Gratings Inscribed in Solid-Core Microstructured Single-Mode Polymer Optical Fiber Drawn From a 3D-Printed Polycarbonate Preform

Zubel, Michal G.; Fasano, Andrea; Woyessa, Getinet Taffesse; Min, Rui; Leal-Junior, Arnaldo Gomes; Theodosiou, Antreas; Marques, Carlos A. F.; Rasmussen, Henrik K.; Bang, Ole; Ortega Tamarit, Beatriz; Kalli, Kyriacos; Frizera-Neto, Anselmo; Pontes, Maria Jose; Sugden, Kate (Institute of Electrical and Electronics Engineers, 2020-11-01)

[EN] This paper reports the first microstructured solid-core fiber drawn from a 3D-printed preform and the first fiber Bragg gratings inscribed in a fiber of this type. The presented fiber is made of polycarbonate and ...
Bragg Gratings Inscription in TS-Doped PMMA POF by Using 248-nm KrF Pulses

Min, Rui; Ortega Tamarit, Beatriz; Hu, Xuehao; Broadway, Christian; Caucheteur, Christophe; Pun, Chi-Fung Jeff; Tam, Hwa-Yaw; Antunes, Paulo; Marques, Carlos (Institute of Electrical and Electronics Engineers, 2018-09-15)

[EN] We demonstrate the Bragg gratings inscription in the 850-nm spectral region by using trans-4-stilbenemethanol-doped poly methyl methacrylate step-index optical fiber and a 248-nm krypton fluoride (KrF) excimer laser ...
Characterization of a FBG sensor interrogation system based on a mode-locked laser scheme

Madrigal-Madrigal, Javier; Fraile-Pelaez, Francisco Javier; Zheng, Di; Barrera Vilar, David; Sales Maicas, Salvador (The Optical Society, 2017-10-02)

[EN] This paper is focused on the characterization of a fiber Bragg grating (FBG) sensor interrogation system based on a fiber ring laser with a semiconductor optical amplifier as the gain medium, and an in-loop electro-optical ...
Chromatic dispersion compensation and coherent Direct-Sequence OCDMA operation on a single super structured FBG

Baños López, Rocío; Pastor Abellán, Daniel; Amaya Ocampo, Waldimar Alexander; García Muñoz, Víctor (Optical Society of America, 2012)

We have proposed, fabricated and demonstrated experimentally a set of Coherent Direct Sequence-OCDMA en/decoders based on Super Structured Fiber Bragg Gratings (SSFBGs) which are able to compensate the fiber chromatic ...
Design of optical fiber sensors and interrogation schemes

Sartiano, Demetrio (Universitat Politècnica de València, 2021-02-15)

[ES] Las fibras ópticas son dispositivos muy utilizados en el campo de las telecomunicaciones desde su descubrimiento. En las últimas décadas, las fibras ópticas comenzaron a utilizarse como sensores fotónicos. Los primeros ...
Fabrication of tunable chirped mPOF Bragg gratings using a uniform phase mask

Min, Rui; Ortega Tamarit, Beatriz; Marques, Carlos (The Optical Society, 2018-02-19)

[EN] We demonstrate chirped Bragg gratings fabrication in doped microstructured tapered polymer fibers by using a uniform phase mask. The use of high photosensitive benzyl dimethyl ketal (BDK) doped core fiber allows to ...
Fast and stable gratings inscription in POFs made of different materials with pulsed 248 nm KrF laser

Marques, Carlos; Min, Rui; Leal-Junior, A.; Antunes, Paulo; Fasano, A.; Woyessa, G.; Nielsen, Kristian; Rasmussen, H.K.; Ortega Tamarit, Beatriz; Bang, Ole (The Optical Society, 2018-01-22)

[EN] This paper presents fiber Bragg grating (FBG) inscription with a pulsed 248 nm UV KrF laser in polymer optical fibers (POFs) made of different polymers, namely polymethyl methacrylate (PMMA), cyclic-olefin polymer and ...
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 ...
Fast inscription of long period gratings in microstructured polymer optical fibers

Min, Rui; Marques, Carlos; Nielsen, K.; Bang, Ole; Ortega Tamarit, Beatriz (Institute of Electrical and Electronics Engineers, 2018-03-01)

[EN] We demonstrate 20 dB long period grating (LPG) fast inscription in microstructured polymer optical fibers (mPOFs) using a point-by-point technique obtaining an LPG total length of 25 mm. Two 248 nm UV laser pulses of ...
High frequency microwave signal generation using dual-wavelength emission of cascaded DFB fiber lasers with wavelength spacing tunability

Villanueva Ibáñez, Guillermo Eduardo; Palací López, Jesús; Cruz, José L.; Andrés, Miguel V.; Martí Sendra, Javier; Pérez Millán, Pedro (Elsevier, 2010-12-15)

[EN] A dual wavelength fiber laser source based on two cascaded phase-shifted fiber Bragg gratings is presented The gratings are written in an erbium-doped fiber each configuring the cavity of a distributed feedback fiber ...
Hot water-assisted fabrication of chirped polymer optical fiber Bragg gratings

Min, Rui; Ortega Tamarit, Beatriz; Broadway, Christian; Caucheteur, Christophe; Woyessa, G.; Bang, Ole; Antunes, Paulo; Marques, Carlos (The Optical Society, 2018-12-24)

[EN] We obtained chirped gratings by performing hot water gradient thermal annealing of uniform poly (methylmethacrylate) (PMMA) microstructured polymer optical fiber Bragg gratings (POFBGs). The proposed method's simplicity ...
Interrogation of a Sensor Array of Identical Weak FBGs using Dispersive Incoherent OFDR

Clement, Juan; Torregrosa, German; Hervás-Peralta, Javier; Barrera Vilar, David; Sales Maicas, Salvador; Fernandez-Pousa, Carlos R. (Institute of Electrical and Electronics Engineers (IEEE), 2016-05-15)

[EN] Incoherent Optical Fourier-Domain Reflectometry incorporating a dispersive delay line is used for the interrogation of an array of three identical fiber Bragg gratings with a Bragg wavelength of 1552.81 nm, reflectivity ...
Largely tunable dispersion chirped polymer FBG

Min, Rui; Korganbayev, Sanzhar; Molardi, Carlo; Broadway, Christian; Hu, Xuehao; Caucheteur, Christophe; Bang, Ole; Antunes, Paulo; Tosi, Daniele; Marques, Carlos; Ortega Tamarit, Beatriz (The Optical Society, 2018-10-15)

[EN] We demonstrate a largely tunable dispersion fiber Bragg grating (FBG) inscribed in a microstructured polymer optical fiber (mPOF). The bandwidth of the chirped FBG (CFBG) was achieved from 0.11 to 4.86 nm, which ...
Linear and nonlinear optical properties of carbon nanotube-coated single-mode optical fiber gratings

Villanueva Ibáñez, Guillermo Eduardo; Jakubinek, M.B.; Simard, B.; Oton Nieto, Claudio José; Matres Abril, Joaquín; Shao, L.Y.; Pérez Millán, Pedro; Albert, J. (Optical Society of America, 2011)

[EN] Single-wall carbon nanotube deposition on the cladding of optical fibers has been carried out to fabricate an all-fiber nonlinear device. Two different nanotube deposition techniques were studied. The first consisted ...
Long fiber Bragg grating sensor interrogation

Ricchiuti, Amelia Lavinia (Universitat Politècnica de València, 2013-10-23)

El principal objetivo de este trabajo ha sido el estudio y desarrollo, tanto teórico como experimental, de sistemas novedosos para la interrogación de sensores de nivel de líquido y de temperatura basados en fibras ópticas ...
Long Weak FBG Sensor Interrogation Using Microwave Photonics Filtering Technique

Lavinia Ricchiuti, Amelia; Barrera Vilar, David; Sales Maicas, Salvador; Thevenaz, Luc; Capmany Francoy, José (Institute of Electrical and Electronics Engineers (IEEE), 2014-10-15)

A system to interrogate photonic sensors based on long weak fiber Bragg gratings (FBGs) is illustrated and experimentally demonstrated. The FBG sensor is able to detect and measure the precise location of several spot ...
Microstructured PMMA POF chirped Bragg gratings for strain sensing

Min, Rui; Ortega Tamarit, Beatriz; Broadway, Christian; Hu, Xuehao; Caucheteur, Christophe; Bang, O.; Antunes, Paulo; Marques, Carlos (Elsevier, 2018-11)

[EN] We demonstrate a chirped microstructured polymer fiber Bragg grating based on taper technology for strain sensing application. The effective bandwidth of the grating is dependent on strain and remains practically ...
Microwave Photonic Filtering for Interrogating FBG-Based Multicore Fiber Curvature Sensor

Zheng, Di; Madrigal-Madrigal, Javier; Barrera Vilar, David; Sales Maicas, Salvador; Capmany Francoy, José (Institute of Electrical and Electronics Engineers, 2017-10-15)

[EN] We propose and experimentally demonstrate an approach to perform high-resolution and temperature-insensitive interrogation of a fiber Bragg grating (FBG)-based multicore fiber (MCF) curvature sensor using a microwave ...