title: Distributed flow sensing using optical hot -wire grid.
abstract: An optical hot-wire flow sensing grid is presented using a single piece of self-heated optical fiber to perform distributed flow measurement. The flow-induced temperature loss profiles along the fiber are interrogated by the in-fiber Rayleigh backscattering, and spatially resolved in millimeter resolution using optical frequency domain reflectometry (OFDR). The flow rate, position, and flow direction are retrieved simultaneously. Both electrical and optical on-fiber heating were demonstrated to suit different flow sensing applications.
authors.affiliation: Department of Electrical and Computer Engineering, University of Pittsburgh, 3700 O’Hara Street, Pittsburgh, Pennsylvania 15261, USA.
authors.forename: Tong
authors.initials: T
authors.lastname: Chen
authors.forename: Qingqing
authors.initials: Q
authors.lastname: Wang
authors.forename: Botao
authors.initials: B
authors.lastname: Zhang
authors.forename: Rongzhang
authors.initials: R
authors.lastname: Chen
authors.forename: Kevin P
authors.initials: KP
authors.lastname: Chen