Towards the control of highly sensitive Fabry-Perot strain sensor based on hollow-core ring photonic crystal fiber

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

Marta S Ferreira (Autor) Outra; Joerg Bierlich (Autor) Outra; Jens Kobelke (Autor) Outra; Kay Schuster (Autor) Outra; Jose L Santos (Autor) FCUP; Orlando Frazao (Autor) FCUP

Revista

Título: Optics Express

Vol. 20

Páginas: 21946-21952

ISSN: 1094-4087

Editora: Optical Society of America

Indexação

ISI Web of Knowledge - 59 Citações

Scopus - 61 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-002-5D5

DOI: 10.1364/oe.20.021946

Abstract (EN): A high sensitivity Fabry-Perot (FP) strain sensor based on hollow-core ring photonic crystal fiber was investigated. A low-finesse FP cavity was fabricated by splicing a section of hollow-core ring photonic crystal fiber between two standard single mode fibers. The geometry presents a low cross section area of silica enabling to achieve high strain sensitivity. Strain measurements were performed by considering the FP cavity length in a range of 1000 mu m. The total length of the strain gauge at which strain was applied was also studied for a range of 900 mm. The FP cavity length variation highly influenced the strain sensitivity, and for a length of 13 mu m a sensitivity of 15.4 pm/mu epsilon was attained. Relatively to the strain gauge length, its dependence to strain sensitivity is low. Finally, the FP cavity presented residual temperature sensitivity (similar to 0.81 pm/degrees C). (C) 2012 Optical Society of America

Idioma: Inglês

Tipo (Avaliação Docente): Científica