Buggy, Stephen J.Murphy, Richard P.James, Stephen W.Tatam, Ralph P.Cutolo, A.Culshaw, B.Lpez-Higuera, J. M.2012-07-192012-07-192007-12-31Stephen J. Buggy, Richard P. Murphy, Stephen W. James and Ralph P. Tatam. Cure monitoring of a UV cured epoxy resin using a long period grating Mach-Zehnder interferometer. Proceedings of SPIE Third European Workshop on Optical Fibre Sensors, Wednesday 04 July 2007, Napoli, Italy. Volume 6619, 66190V. Eds. Antonello Cutolo, Brian Culshaw, Jose Miguel Lopez-Higuera0819467618;978-081946761-40277-786Xhttp://dx.doi.org/10.1117/12.738364http://dspace.lib.cranfield.ac.uk/handle/1826/7398A cascaded long period grating Mach-Zehnder interferometer is used to monitor the change in refractive index of a UV cured epoxy resin over a cure cycle. Fourier techniques are used to calculate the phase shift and frequency spectral amplitude of the associated fringe pattern during the cure. The results are compared with the refractive index change during cure calculated using a Fresnel reflection based technique.Cure sensorFresnel refractometerLong period gratingOptical fibreConference paper