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

Amanda Fender*, Euan J. Rigg, Robert R.J. Maier, William N. MacPherson, James S. Barton, Andrew J. Moore, Julian D.C. Jones, Donghui Zhao, Lin Zhang, Ian Bennion, Scott McCulloch, Ben J.S. Jones

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

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 με 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 με 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. © 2006 Optical Society of America.

Original languageEnglish
Pages (from-to)9041-9048
Number of pages8
JournalApplied Optics
Volume45
Issue number36
DOIs
Publication statusPublished - 20 Dec 2006

Bibliographical note

© 2006 Optical Society of America.
This paper was published in Applied optics and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-36-9041. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.

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    Fender, A., Rigg, E. J., Maier, R. R. J., MacPherson, W. N., Barton, J. S., Moore, A. J., Jones, J. D. C., Zhao, D., Zhang, L., Bennion, I., McCulloch, S., & Jones, B. J. S. (2006). Dynamic two-axis curvature measurement using multicore fiber Bragg gratings interrogated by arrayed waveguide gratings. Applied Optics, 45(36), 9041-9048. https://doi.org/10.1364/AO.45.009041