Pressure Sensor based on an all-fiber Fabry-Perot interferometer for different gaseous environments

• Tipo: Artigo em Livro de Atas de Conferência Internacional
• Data: 2013

Autores

Susana Silva (Autor) Outra; Coelho, L (Autor) Outra; Frazao, O (Autor) FCUP

Ata de Conferência Internacional

Título: FIFTH EUROPEAN WORKSHOP ON OPTICAL FIBRE SENSORS

5th European Workshop on Optical Fibre Sensors

Krakow, POLAND, MAY 19-22, 2013

Indexação

ISI Web of Knowledge - 0 Citações

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Outras Informações

ID Authenticus: P-006-FV1

DOI: 10.1117/12.2025394

Abstract (EN): This work describes an all-fiber Fabry-Perot interferometer (FFPI) that is sensitive to gas pressure variations. The geometry of the air cavity consists on splicing a small section of silica rod with a large offset in between two singlemode fibers. It is shown that the FFPI sensor is sensitive to gas pressure variation and when submitted to different gaseous environments, namely carbon dioxide, nitrogen and oxygen, it presented different sensitivities of 6.2, 4.1 and 3.6 nm/MPa, respectively. This result is obtained due to refractive index difference between gases. The refractive index change on nitrogen environment by means of the gas pressure variation resulted in a sensitivity of 1526 nm/RIU. The response of the sensing device to temperature in air was also determined and a sensitivity of -14 pm/degrees C was attained.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 4