Optimization of the frequency-modulated continuous wave technique for referencing and multiplexing intensity-based fiber optic sensors

• Type: Article in International Scientific Journal
• Date: 2011

Authors

Perez Herrera, RA (Author) Other; Pereira, DA (Author) Other; Frazao, O (Author) FCUP; Castro M C Ferreira (Author) Other; Santos, JL (Author) FCUP; Araujo, FM (Author) Other; Ferreira, LA (Author) Other; Baptista, JM (Author) Other; Lopez Amo, M (Author) Other

Journal

Title: Measurement: Journal of the International Measurement Confederation

Vol. 44

Pages: 230-237

ISSN: 0263-2241

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 3 Citations

Scopus - 3 Citations

Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

Authenticus ID: P-002-Z4P

DOI: 10.1016/j.measurement.2010.09.045

Abstract (EN): In this paper, we demonstrate the interrogation of fiber optic intensity sensors by using the combination of the frequency-modulated continuous wave concept with the spectral selective reflectivity of fiber Bragg gratings. Thus, we multiplex these kinds of sensors with this technique having simultaneously a referenced system. The basis of this dual functionality is described and results are presented for the case of interrogation of two multiplexed intensity sensors. Their evaluation permits to establish the conditions to address a sensor network of this type. Also, it is proposed a strategy to implement this sensing approach without the requirement of using optical fiber delay lines in the sensor heads.

Language: English

Type (Professor's evaluation): Scientific