Fiber Optic Distributed Sensing Technology Based on Microwave Reconstructed Optical Interferograms
Here we report a distributed fiber optic sensing technique through microwave assisted separation and reconstruction of optical interferograms in spectrum domain. The approach involves sending a microwave-modulated optical signal through cascaded fiber optic interferometers. The microwave signal was used to resolve the position and reflectivity of each sensor along the optical fiber. By sweeping the optical wavelength and detecting the modulation signal, the optical spectrum of each sensor can be reconstructed. Three cascaded fiber optic extrinsic Fabry-Perot interferometric sensors were used to prove the concept. Their microwavereconstructed interferograms matched well with those recorded individually using an optical spectrum analyzer.
J. Huang et al., "Fiber Optic Distributed Sensing Technology Based on Microwave Reconstructed Optical Interferograms," Proceedings of the Frontiers in Optics 2013 (2013, Orlando, FL), Optical Society of America, Oct 2013.
The definitive version is available at http://dx.doi.org/10.1364/FIO.2013.FW6B.1
Frontiers in Optics 2013 (2013: Oct. 6-10, Orlando, FL)
Electrical and Computer Engineering
Keywords and Phrases
Fiber optics; Interferometry; Microwaves; Optical fibers; Spectrum analyzers, Distributed sensing; Extrinsic Fabry-Perot interferometric sensor; Fiber-optic interferometers; Fiber-optic sensing; Microwave assisted; Modulation signals; Optical interferograms; Optical spectrum analyzer, Microwave sensors
International Standard Book Number (ISBN)
Article - Conference proceedings
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