Simultaneous Measurement of Humidity and Temperature Based on an SiO2-Nanospheres Film Deposited on a Long-Period Grating In-Line With a Fiber Bragg Grating

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

Viegas, D (Autor) Outra; Hernaez, M (Autor) Outra; Goicoechea, J (Autor) Outra; Santos, JL (Autor) FCUP; Araujo, FM (Autor) Outra; Arregui, F (Autor) Outra; Matias, IR (Autor) Outra

Revista

Título: IEEE Sensors Journal

Vol. 11

Páginas: 162-166

ISSN: 1530-437X

Editora: IEEE

Indexação

ISI Web of Knowledge - 36 Citações

Scopus - 46 Citações

Classificação Científica

FOS: Ciências da engenharia e tecnologias > Engenharia electrotécnica, electrónica e informática

Outras Informações

ID Authenticus: P-002-YQ3

DOI: 10.1109/jsen.2010.2055237

Abstract (EN): A novel configuration able to measure simultaneously relative humidity and temperature is proposed. The sensing head is based on a long-period fiber grating (LPG) coated with silica nanospheres in-line with a fiber Bragg grating. The polymeric overlay that changes its optical properties when exposed to different humidity levels is deposited onto the LPG using the electrostatic self-assembly technique (ESA), resulting into a humidity-induced shift of the resonance wavelength of the LPG. Considering the humidity range from 20% to 50% RH, a system resolution of 1.6% RH and 2.5 degrees C was achieved. At higher humidity, from 50% to 80% RH, the corresponding resolution values were 2.4% RH and 0.4 degrees C.

Idioma: Inglês

Tipo (Avaliação Docente): Científica