Listar Dpto. Ingeniería Eléctrica y Electrónica - Ingeniaritza Elektriko eta Elektronikoa Saila por autor "Frazão, Orlando"
Mostrando ítems 1-8 de 8
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250 km ultra long remote sensor system based on a fiber loop mirror interrogated by an OTDR
Bravo Acha, Mikel
; Baptista, José Manuel; Santos, José Luís; López-Amo Sáinz, Manuel ; Frazão, Orlando (Optical Society of America, 2011)
Artículo / Artikulua 
A 253 km ultra long remote displacement sensor system based on a fiber loop mirror interrogated by a commercial OTDR is proposed and experimentally demonstrated. The use of a fiber loop mirror increases the signal to noise ... -
Experimental and numerical characterization of a hybrid Fabry-Perot cavity for temperature sensing
López Aldaba, Aitor; Rodrigues Pinto, Ana Margarida ; López-Amo Sáinz, Manuel ; Frazão, Orlando; Santos, José Luís; Baptista, José Manuel; Baierl, Hardy; Auguste, Jean-Louis; Jamier, Raphael; Roy, Philippe (MDPI, 2015)
Artículo / Artikulua
A hybrid Fabry-Pérot cavity sensing head based on a four-bridge microstructured fiber is characterized for temperature sensing. The characterization of this cavity is performed numerically and experimentally in the L-band. ... -
Fiber cavity ring down and gain amplification effect
Silva, Susana; Magalhães, Regina; Pérez Herrera, Rosa Ana ; López-Amo Sáinz, Manuel ; Marques, M. B.; Frazão, Orlando (Springer Nature, 2016)
Artículo / Artikulua
The effect of an erbium-doped fiber amplifier (EDFA) placed inside the fiber ring of a cavity ring down (CRD) configuration is studied. The limitations and advantages of this configuration are discussed, and the study of ... -
Frequency modulated continuous wave system for optical fiber intensity sensors with optical amplification
Pérez Herrera, Rosa Ana ; Frazão, Orlando; Santos, José Luís; Araújo, Francisco Moita; Ferreira, Luis Alberto; Baptista, José Manuel; López-Amo Sáinz, Manuel (IEEE, 2009)
Artículo / Artikulua
We report on the use of erbium doped fiber (EDF) amplification to enhance a frequency modulated continuous wave (FMCW) technique for referencing optical intensity sensors located between two Bragg grating structures. The ... -
Micro-displacement sensor based on a hollow-core photonic crystal fiber
Rodrigues Pinto, Ana Margarida; López-Amo Sáinz, Manuel ; Baptista, José Manuel; Santos, José Luís; Frazão, Orlando (MDPI, 2012)
Artículo / Artikulua
A sensing head based on a hollow-core photonic crystal fiber for in-reflection measurement of micro-displacements is presented. The sensing structure takes advantage of the multimodal behavior of a short segment of hollow-core ... -
Micro-displacement sensor combined with a fiber ring interrogated by an optical time-domain reflectometer
Bravo Acha, Mikel ; Baptista, José Manuel; Santos, José Luís; López-Amo Sáinz, Manuel ; Frazão, Orlando (IEEE, 2014)
Artículo / Artikulua
A micro-displacement sensing head based on two aligned cleaved fibers inserted into an optical fiber ring and interrogated by an OTDR is presented. The sensor configuration is characterized for measuring both longitudinal ... -
Multiwavelength Raman fiber lasers using Hi-Bi photonic crystal fiber loop mirrors combined with random cavities
Rodrigues Pinto, Ana Margarida; Frazão, Orlando; Santos, José Luís; López-Amo Sáinz, Manuel (IEEE / OSA, 2011)
Artículo / Artikulua
Different multiwavelength Raman fiber lasers based on a hybrid cavity set-up are proposed. The lasing schemes are based in highly birefringent photonic crystal fiber loop mirrors combined with random cavities. The Hi-Bi ... -
Simultaneous measurement of strain and temperature based on clover microstructured fiber loop mirror
Pérez Herrera, Rosa Ana ; André, R. M.; Silva, S. F.; Becker, M.; Schuster, K.; Kobelke, J.; López-Amo Sáinz, Manuel ; Santos, José Luís; Frazão, Orlando (Elsevier, 2015)
Artículo / Artikulua
In this work, two all-fiber loop mirrors using a clover microstructured fiber for the simultaneous measurement of temperature and strain are presented. The sensing heads are formed by a short piece of clover microstructured ...
