Spatially weighted vibration sensors using tapered two-mode optical fibers

Author

Murphy, Kent A. ; Fogg, Brian R. ; Vengsarkar, Ashish M.

Author_Institution

Bradley Dept. of Electr. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

Volume

10

Issue

11

fYear

1992

fDate

11/1/1992 12:00:00 AM

Firstpage

1680

Lastpage

1687

Abstract

Spatially weighted optical fiber sensors that filter specific vibration modes from one-dimensional beams placed in clamped-free and clamped-clamped configurations are presented. The sensitivity of the sensors is varied along the length of the fiber by tapering two-mode, circular-core fibers. Selective vibration mode suppression on the order of 10 dB has been obtained using weighted sensors. Experimental results are described, and applications for distributed sensors are proposed

Keywords

fibre optic sensors; sensitivity; vibration measurement; 1D beams; circular-core; clamped-clamped configurations; clamped-free; distributed sensors; optical fiber sensors; sensing fibre length sensitivity variation; spatially weighted sensor; specific vibration modes; tapered two-mode optical fibers; two-mode; vibration mode filtering; vibration mode suppression; vibration sensors; weighted sensors; Control systems; Filters; Magnetic field measurement; Magnetic sensors; Optical fiber sensors; Optical fibers; Optical sensors; Sensor phenomena and characterization; Sensor systems; Temperature sensors;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.184908

Filename

184908