Intrinsic Fabry-Perot Cavity Sensor Based on Etched Multimode Graded Index Fiber for Strain and Temperature Measurement

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

Autores

Paula A R Tafulo (Autor) Outra; Pedro. A S Jorge (Autor) FCUP; Jose Luis Santos (Autor) FCUP; Francisco M Araujo (Autor) Outra; Orlando Frazao (Autor) FCUP

Revista

Título: IEEE Sensors Journal

Vol. 12

Páginas: 8-12

ISSN: 1530-437X

Editora: IEEE

Indexação

ISI Web of Knowledge - 54 Citações

Scopus - 61 Citações

Classificação Científica

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

Outras Informações

ID Authenticus: P-002-HHD

DOI: 10.1109/jsen.2011.2107737

Abstract (EN): Two Fabry-Perot interferometers based on chemical etching in multimode graded index fibers are fabricated and their response to temperature and strain are compared. Chemical etching is applied in the graded index fiber end creating an air cavity. The interferometric cavity is formed when the graded index fiber with the air concavity is spliced to a single-mode fiber. The intrinsic sensors present high sensitivity to strain and low sensitivity to temperature. For the 62.5 mu m core fiber, sensitivities of 6.99 pm/mu epsilon and, 0.95 pm/degrees C were obtained for strain and temperature, respectively. The sensor based in the 50 mu m core fiber, on the other hand, presented sensitivities of 4.06 pm/mu epsilon and -0.84 pm/degrees C for strain and temperature, respectively.

Idioma: Inglês

Tipo (Avaliação Docente): Científica