Title :
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
fDate :
11/1/1992 12:00:00 AM
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;
Journal_Title :
Lightwave Technology, Journal of
