Fibre-optic technology enables optical
measurements to be made in real engineering environments for
temperature, pressure, strain, shape,
vibration, velocity and acoustic measurements for applications in
industry and engineering research. We exploit the flexibility
offered by using optical fibres to allow us to apply advanced
optical measurement techniques to real applications:
Current and Recent Projects
Novel optical fibres for enhanced optical trapping
Georgia Anastasiadi, Bill MacPherson, Lynn Paterson (Institute of Biological Chemistry, Biophysics and Bioengineering )
This project will develop technology towards an optical fibre trap using novel optical fibres in order to hold, and controllably move, individual micro and nanoscopic
particles in three dimensions.
work is supported by The Paul Instrument Fund and Renishaw.
layer manufacturing (ALM)
Dirk Havermann, Richard Carter, Bill MacPherson, Robert Maier, Duncan Hand
The aim of
this research is to embed fibre Bragg gratings (FBG) in
complex metal components. This combines the flexibility
of ALM technique to create previously unattained
geometries and functionalities with the real-time
in-situ sensing capability of FBG.
work is supported by EPSRC and SUPA.
Microstructured Elements on Fibre-tips
Li, Frank Albri, Robert Maier, Duncan Hand, Bill
investigating the potential of ps-laser machining
and focussed ion beam machining to fabricate novel
structures onto the end of optical fibres. This work
is supported by Renishaw and SUPA.
High Resolution Pressure Sensors
Martin Smith, Bill MacPherson, Robert Maier
resolution differential pressure measurement remains
a challenge for high performance engineering
applications where traditional sensors would require
measurement capability approaching 1 part per
million to realise the required resolution for some
experiments. We are exploring the potential of
Fabry-perot based sensors as an alternative to
conventional electrical sensors. This work is
funded by Rolls-Royce.
Long Period Grating Sensors
Richard Carter, Robert Maier, Jim Barton
Period Gratings offer the ability to sense changes
in the media surrounding the fibre. We have
modelled, and experimentally verified, the case
where the outer coating is a metal. Choice of
appropriate metals allows species specific chemical
sensing. This work is supported by AWE plc.
Bandwidth Temperature and Pressure Sensors (2000-2005)
Stuart Watson, Mathew Gander, Bill
MacPherson, Jim Barton, Julian Jones
has demonstrated fibre optic probes, rugged enough to
use in field tests. Applications include
temperature and pressure measurement in flows in
aerodynamic test facilities and for measuring explosive air blast
pressures at high bandwidths. This work was funded by EPSRC.
In-Situ Material and Environmental Monitoring Development Programme
Richard Carter, Euan Rigg, Peter Harrison, Robert Maier, Bill MacPherson,
Julian Jones, Jim
All-optical sensing is particularly appropriate for monitoring a range of physical parameters in difficult environments. Optical fibres enable us to do this where it would not be practical to use conventional optics.
This work was funded by AWE plc.
and Shape Monitoring using Novel Multicore Fibres
Manuel Silva-Lopez, Amanda Fender, Jim Barton, Bill
This project aims to investigate the development and use of novel grating structures in collaboration with the Photonics Research Group at Aston University to make quasi-distributed measurements of transverse strain and avoiding unwanted temperature sensitivity. Multi-parameter sensors will be investigated based on fibre grating structure and also novel fibre geometries will also be investigated.
This work was funded by EPSRC and AWE plc.
Medical Instrument Screening (2002-05)
Valeri Kovalev, Cheng Li, Robert Maier, Jim Barton
Prions, misshapen or abnormally folded forms of the natural PrP protein, are the infectious agents that cause variant CJD in humans. They are very difficult to distinguish from the normal form of the protein and, because they are particularly resistant to normal hospital sterilisation procedures, there is a risk of transmission of the disease via surgical instruments. The project aims to provide a new approach to decontamination of surgical instruments, and to ensure that decontamination is effective.
Thiw work was funded by the Department of Health.