%0 Journal Article
%T Remote Interrogation of WDM Fiber-Optic Intensity Sensors Deploying Delay Lines in the Virtual Domain
%A David S¨¢nchez Montero
%A Carmen V¨¢zquez
%J Sensors
%D 2013
%I MDPI AG
%R 10.3390/s130505870
%X In this work a radio-frequency self-referencing WDM intensity-based fiber-optic sensor operating in reflective configuration and using virtual instrumentation is presented. The use of virtual delay lines at the reception stage, along with novel flexible self-referencing techniques, and using a single frequency, avoids all-optical or electrical-based delay lines approaches. This solution preserves the self-referencing and performance characteristics of the proposed WDM-based optical sensing topology, and leads to a more compact solution with higher flexibility for the multiple interrogation of remote sensing points in a sensor network. Results are presented for a displacement sensor demonstrating the concept feasibility.
%K optical sensing
%K passive remote sensing
%K self-referencing
%K virtual delay line
%U http://www.mdpi.com/1424-8220/13/5/5870