Fiber Optic Distributed Sensing Technology Based on Microwave Reconstructed Optical Interferograms

Abstract

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 microwave-reconstructed interferograms matched well with those recorded individually using an optical spectrum analyzer.

Meeting Name

Frontiers in Optics 2013 (2013: Oct. 6-10, Orlando, FL)

Department(s)

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)

978-1-55752-988-6

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2013 Optical Society of America, All rights reserved.

Publication Date

01 Oct 2013

Link to Full Text

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