Temperature-independent strain sensor based on a Hi-Bi photonic crystal fiber loop mirror

• Tipo: Artigo em Revista Científica Internacional
• Data: 2007

Autores

Frazao, O (Autor) Outra; Baptista, JM (Autor) Outra; Santos, JL (Autor) FCUP

Revista

Título: IEEE Sensors Journal

Vol. 7

Páginas: 1453-1455

ISSN: 1530-437X

Editora: IEEE

Indexação

ISI Web of Knowledge - 106 Citações

Scopus - 129 Citações

Classificação Científica

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

Outras Informações

ID Authenticus: P-004-7SN

DOI: 10.1109/jsen.2007.904884

Abstract (EN): This work presents an optical sensor based on a highly birefringent photonic crystal fiber (Hi-Bi PCF) loop mirror. The length of the sensing head is 380 mm and its corresponding wavelength spacing between two interferometer minima is 8 nm. The optical sensor was characterized in strain and in temperature with an uncoated Hi-Bi PCF and with an acrylate coated Hi-Bi PCF. Different results for strain and temperature sensitivity were obtained. Relatively to the strain measurement, the sensor with the uncoated Hi-Bi PCF presents slightly less sensitivity (1.11 pm/mu epsilon) when compared with coated Hi-Bi PCF (1.21 pm/mu epsilon). For the temperature measurement and with the uncoated Hi-Bi PCF, the optical sensor is insensitive to temperature (0.29 pm/K).

Idioma: Inglês

Tipo (Avaliação Docente): Científica