Torsion sensor based on a figure-of-eight cavity fibre laser

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

Autores

Ferreira, MS (Autor) Outra; Santos, JL (Autor) FCUP; Mergo, P (Autor) Outra; Frazao, O (Autor) FCUP

Revista

Título: Laser Physics Letters

Vol. 10

Página Final: 045105

ISSN: 1612-2011

Editora: Institute of Physics Publishing

Indexação

ISI Web of Knowledge - 6 Citações

Scopus - 7 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-005-1X0

DOI: 10.1088/1612-2011/10/4/045105

Abstract (EN): A figure-of-eight based fibre laser cavity is proposed for the measurement of torsion. In one of the loops a section of photonic crystal fibre is inserted, acting both as an optical filter and the sensing head. The laser emission depends on the optical filter polarization and length. A single lasing band is achieved with a full width at half maximum of similar to 1.72 nm. The proposed sensor presents sensitivity to torsion of 7.13 pm/degree over a range of 180 degrees. This configuration can also be used to measure optical power variations. Besides, due to the properties of the optical filter this sensor presents low sensitivity to temperature.

Idioma: Inglês

Tipo (Avaliação Docente): Científica