Interrogation and multiplexing system for fiber loop mirror coupled intensity sensors using OTDR

• Published in: Microwave and optical technology letters Vol. 56; no. 12; pp. 2860 - 2864
• Main Authors: Giraldi, Maria Thereza M. Rocco, Fernandes, Cindy S., Ferreira, Marta S., de Sousa, Marco J., Jorge, Pedro, Costa, João C. W. A., Santos, José L., Frazão, Orlando
• Format: Journal Article
• Language: English
• Published: New York Blackwell Publishing Ltd 01-12-2014; Wiley Subscription Services, Inc
• Subjects: Dynamical systems; Dynamics; fiber loop mirror; Interrogation; interrogation system; Joining; Microwaves; Multiplexing; Noise levels; optical fiber sensor; optical time domain reflectometer; Sensors
• ISSN: 0895-2477; 1098-2760
• DOI: 10.1002/mop.28720

ABSTRACT
In this article, it is proposed an interrogation and multiplexing system based on optical time domain reflectometer for fiber loop mirror coupled intensity sensors. Pulse width of approximately 100 ns enabled to attain a dynamic range of approximately 18 dB. Good linearity was achieved with a −13.3 dB/mm slope. The resolution of the sensing head was 0.027 mm. The proposed interrogation system showed to be an alternative technique for multiplexing and remote sensing. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:2860–2864, 2014