Ring fibre laser with interferometer based in long period grating for sensing applications

• Tipo: Artigo em Revista Científica Internacional
• Data: 2008

Autores

Frazao, O (Autor) Outra; Correia, C (Autor) Outra; Baptista, JM (Autor) Outra; Marques, MB (Autor) FCUP; Santos, JL (Autor) FCUP

Revista

Título: Optics Communications

Vol. 281

Páginas: 5601-5604

ISSN: 0030-4018

Editora: Elsevier

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 5 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-003-TX7

DOI: 10.1016/j.optcom.2008.08.004

Abstract (EN): This work presents two distinct configurations based on phase-wavelength conversion using a ring fibre laser with two different long period gratings interferometer topologies. The sensors are interrogated by analysing the wavelength change of the emission laser, which is directly dependent on the interferometer phase change. The first configuration integrates a Mach-Zehnder interferometer, which is based on a pair of long period gratings and is used as sensing head for bending radius and longitudinal strain measurement. The second configuration, comprehends a Michelson interferometer, which is based on a single LPG and a fibre end mirror and is used as a liquid level sensor or as an optical refractometer.

Idioma: Inglês

Tipo (Avaliação Docente): Científica