title: Frequency-domain analysis of dynamically applied strain using sweep-free Brillouin time-domain analyzer and sloped-assisted FBG sensing.
abstract: Fast reconstruction of the whole Brillouin gain spectrum is experimentally demonstrated using sweep-free Brillouin optical time-domain analysis (SF-BOTDA). Strain variations with the frequencies up to 400 Hz are spectrally analyzed, achieving strain sensitivity of 1 microstrain per root Hz at a sampling rate of 5.5 kHz and a spatial resolution of 4m. The results favorably compare with fiber Bragg grating sensing.
authors.affiliation: Department of Electrical Engineering-Systems, University of Southern California, 3740 McClintock Avenue, Los Angeles, CA 90035, USA. voskoboi@usc.edu
authors.forename: Asher
authors.initials: A
authors.lastname: Voskoboinik
authors.forename: Dvora
authors.initials: D
authors.lastname: Rogawski
authors.forename: Hao
authors.initials: H
authors.lastname: Huang
authors.forename: Yair
authors.initials: Y
authors.lastname: Peled
authors.forename: Alan E
authors.initials: AE
authors.lastname: Willner
authors.forename: Moshe
authors.initials: M
authors.lastname: Tur