Work

Microwave assisted reconstruction of optical interferograms for distributed fiber optic sensing

Year: 2013

Type: article

Abstract: This paper reports 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 interferogram matched well with those recorded individually using an optical spectrum analyzer. The application in distributed strain measurement has also been demonstrated.

Source: Optics Express

DOI: 10.1364/oe.21.018152

Authors: Jie Huang, Lei Hua, Xinwei Lan, Tao Wei, Hai Xiao

Institutions: Missouri University of Science and Technology, University of Rhode Island

Language: English

Topic: Advanced Fiber Optic Sensors

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funders: National Science Foundation, Division of Civil, Mechanical and Manufacturing Innovation