Author Affiliations

Stephen W. James,^# Stephen E. Staines,^# Ralph P. Tatam,^#,$ and Robin L. Elder^#,*

^#Optical Sensors Group, Centre for Photonics and Optical Engineering, School of Mechanical Engineering Cranfield University, Cranñeld, Bedford, MK43 OAL, UK

^*Turbomachinery Research Group, School of Mechanical Engineering Cranfield University, Cranñeld, Bedford, MK43 OAL, UK

http://www.cranfield.ac.uk/sme/cpoe

^$ r.p.tatam@cranfield.ac.uk