Dynamic two-axis curvature measurement using multicore fiber Bragg gratings interrogated by arrayed waveguide gratings

Dynamic two-axis curvature measurement using multicore fiber Bragg gratings interrogated by arrayed waveguide gratings

We describe the use of arrayed waveguide gratings (AWGs) in the interrogation of fiber Bragg gratings (FBGs) for dynamic strain measurement. The ratiometric AWG output was calibrated in a static deflection experiment over a +/-200 microepsilon range. Dynamic strain measurement was demonstrated with...

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Veröffentlicht in:Applied Optics 2006-12, Vol.45 (36), p.9041-9048
Hauptverfasser: Fender, Amanda, Rigg, Euan J, Maier, Robert R J, MacPherson, William N, Barton, James S, Moore, Andrew J, Jones, Julian D C, Zhao, Donghui, Zhang, Lin, Bennion, Ian, McCulloch, Scott, Jones, Ben J S
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container_end_page 9048
container_issue 36
container_start_page 9041
container_title Applied Optics
container_volume 45
creator Fender, Amanda
Rigg, Euan J
Maier, Robert R J
MacPherson, William N
Barton, James S
Moore, Andrew J
Jones, Julian D C
Zhao, Donghui
Zhang, Lin
Bennion, Ian
McCulloch, Scott
Jones, Ben J S
description We describe the use of arrayed waveguide gratings (AWGs) in the interrogation of fiber Bragg gratings (FBGs) for dynamic strain measurement. The ratiometric AWG output was calibrated in a static deflection experiment over a +/-200 microepsilon range. Dynamic strain measurement was demonstrated with a FBG in a conventional single-mode fiber mounted on the surface of a vibrating cantilever and on a piezoelectric actuator, giving a resolution of 0.5 microepsilon at 2.4 kHz. We present results of this technique extended to measure the dynamic differential strain between two FBG pairs within a multicore fiber. An arbitrary cantilever oscillation of the multicore fiber was determined from curvature measurements in two orthogonal axes at 1125 Hz with a resolution of 0.05 m(-1).
doi_str_mv 10.1364/ao.45.009041
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title Dynamic two-axis curvature measurement using multicore fiber Bragg gratings interrogated by arrayed waveguide gratings
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