Digital Control of a White Light Interrogation System for Optical Fiber Interferometers

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

Autores

Velosa, E (Autor) Outra; Gouveia, C (Autor) Outra; Frazao, O (Autor) FCUP; Jorge, PAS (Autor) FCUP; Baptista, JM (Autor) Outra

Revista

Título: IEEE Sensors Journal

Vol. 12

Páginas: 201-206

ISSN: 1530-437X

Editora: IEEE

Indexação

ISI Web of Knowledge - 2 Citações

Scopus - 2 Citações

Outras Informações

ID Authenticus: P-002-HHJ

DOI: 10.1109/jsen.2011.2144579

Abstract (EN): A system to interrogate optical fiber interferometric sensors with digital control is presented. The system is based on a receiving white light Mach-Zehnder interferometer and is capable of operating with four distinct synthetic and pseudo-heterodyne signal detection schemes. A differential phase detection scheme was implemented and system performance with the different processing schemes was compared using fiber Bragg grating based Fabry-Perot cavity strain sensors. With a lock-in time constant of 1 s, most digital techniques were able to nearly match the performance of a standard hardware system, demonstrating the feasibility of low-cost high-resolution interferometric systems operated with virtual instrumentation.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6