Simultaneous measurement of refractive index and temperature using multimode interference inside a high birefringence fiber loop mirror

• Tipo: Artigo em Revista Científica Internacional
• Data: 2013

Autores

Gouveia, C (Autor) Outra; Chesini, G (Autor) Outra; Cordeiro, CMB (Autor) Outra; Baptista, JM (Autor) Outra; Jorge, PAS (Autor) FCUP

Revista

Título: Sensors and Actuators, B: Chemical

Vol. 177

Páginas: 717-723

ISSN: 0925-4005

Editora: Elsevier

Indexação

ISI Web of Knowledge - 40 Citações

Scopus - 41 Citações

Outras Informações

ID Authenticus: P-002-0M8

DOI: 10.1016/j.snb.2012.11.095

Abstract (EN): A fiber optic sensor for simultaneous measurement of refractive index and temperature is presented. The sensing probe is realized by introducing a multimode interference device inside a high birefringence fiber loop mirror resulting in a configuration capable of refractive index and temperature discrimination. The multimode interference peak is sensitive to the surrounding refractive index (90 nm/RIU) and slightly responsive to the temperature (0.01 nm/ degrees C). On the other hand, the birefringent fiber loop mirror is highly sensitive to temperature (2.36 nm/ degrees C) and it has almost no response to refractive index. Using a power ratiometric peak detection scheme, a temperature independent refractive index measurement can be achieved with a resolution of +/- 2.25 x 10(-5) RIU.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7