In this paper, we demonstrate an interrogation system, based on an arrayed waveguide grating, capable of monitoring dynamic strain in a cantilever beam at frequencies up to 5 kHz (limited by the actuator) with a similar precision to resistive strain gauges.
['Andrew J. Willshire', 'Pawel Niewczas', 'Lukasz Dziuda', 'Grzegorz Fusiek', 'J.R. McDonald']
Dynamic strain measurement using an extrinsic Fabry-Perot interferometric sensor and an arrayed waveguide grating device