The University of Technology Sydney (UTS)   


Available for short period to study in France with the potential to enroll in a joint PhD between iPL, UTS Australia, UPS and University Saclay, Paris, France. Apply through the French Embassy in Australia: MORE  UTS linked: TOPIC  Contact: Prof. John Canning

PROJECT: This overall project will develop Fiber Optic sensors based on FBGs that can operate in extreme environments, especially at high temperatures (700 - 1500 °C). Following recent developments, these sensors are being developed to measure temperature and strain in extreme environments. This new fiber Bragg grating technology adds extreme temperature resistance to the intrinsic advantages of FBG based metrology such as spectral multiplexing capabilities (multiple measurement points on a single optical fiber) and electromagnetic immunity. Ultra-high temperature performance is needed across sectors such as Aerospace (aircraft engines), Advanced Manufacturing (3D laser additive manufacturing metal parts), optics (high power laser), steel and aluminium smeltering industry, nuclear (instrumentation of future reactors) and space (launchers). Two innovating FBGs to solve this high temperature problem now exist: in particular the FBG regeneration process (identified by our Australian partner) is the only current approach that can enable photonic technologies to operate in such harsh environments at elevated temperatures. In the simplest interpretation the regeneration process is the rebirth of a grating that is first annealed out. A second approach would be to take advantage of the selectivity in spatial and time domains that near IR femtosecond lasers offer. In this project, the technology of glass taken for granted in the macro scale will be applied on a sub micron scale with a degree of unheralded finesse using laser patterning and writing of temperature stable sub-micron structures glass smithing with nanoscale resolution becomes feasible. 

SYNOPSIS: Deployment of FBG high temperature sensors arrays to real life applications requires fulfilling stringent end usedemands. Moreover, efficient solutions must be developed in order for femtosecond or UV laser regenerated FBGs to act as a reliable and mature industrial solution with regard to well established techniques such as thermocouples.