Dynamical interrogation of interferometric sensor arrays by a simple polarimetric setup

Y. Katz; A. Eyal

doi:10.1117/12.886065

17 May 2011 Dynamical interrogation of interferometric sensor arrays by a simple polarimetric setup

Y. Katz, A. Eyal

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77531X (2011) https://doi.org/10.1117/12.886065
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

Numerous methods have been proposed for multiplexing interferometric sensors into large scale arrays. Previously we described a low loss polarimetric sensor array based on a concatenation of high-birefringence fiber. It was interrogated by a wavelength scanning laser and its output was measured by a polarization analyzer. Here we demonstrate how the same source and detection system can be used to interrogate a different sensor array with increased sensitivity: a cascade of fiber-optic Fabry-Perot interferometers. The auxiliary interferometer, needed for obtaining a synchronized linear frequency grid, is implemented "in-line" and does not require an additional detection and digitizing circuitry. The proposed approach, therefore, constitutes a simple and modular sensor array interrogation scheme in which different arrays of sensors with significantly different sensitivities can be interchanged according to circumstances.

Citation Download Citation

Y. Katz and A. Eyal "Dynamical interrogation of interferometric sensor arrays by a simple polarimetric setup", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77531X (17 May 2011); https://doi.org/10.1117/12.886065

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