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.
© 2013 Optical Society of America
PDF Article | Presentation VideoMore Like This
Chen Zhu and Jie Huang
JM7A.80 Frontiers in Optics (FiO) 2023
Gregory L. Duckworth
AM3B.3 Applied Industrial Optics: Spectroscopy, Imaging and Metrology (AIO) 2013
Chen Zhu and Jie Huang
Th4.6 Optical Fiber Sensors (OFS) 2022