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Opt Express. 2012 Apr 9;20(8):8240-9. doi: 10.1364/OE.20.008240.

Distributed flow sensing using optical hot -wire grid.

Author information

  • 1Department of Electrical and Computer Engineering, University of Pittsburgh, 3700 O’Hara Street, Pittsburgh, Pennsylvania 15261, USA.

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.

PMID:
22513536
[PubMed]
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