Listar Dpto. Ingeniería Eléctrica y Electrónica - Ingeniaritza Elektriko eta Elektronikoa Saila por autor "Araújo, Francisco Moita"

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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 ...
Sensitivity improvement of a humidity sensor based on silica nanospheres on a long-period fiber grating

Viegas, Diana; Goicoechea Fernández, Javier ; Santos, José Luís; Araújo, Francisco Moita; Ferreira, Luis Alberto; Arregui San Martín, Francisco Javier ; Matías Maestro, Ignacio (MDPI, 2009) Artículo / Artikulua

This work addresses a new configuration that improves the sensitivity of a humidity sensor based on a long-period fiber grating coated with a SiO(2)-nanospheres film. An intermediate higher refractive index overlay, ...