Centre for Photonics and Photonic Materials

Seminar - Collapsed optical fibres for higher luminescence generation

Thu Feb 26 14:08:00 GMT 2015

Join us on the 26 February for this seminar with Ghafour Amouzad Mahdiraji, the University of Malaya

Abstract

Ionizing radiation dose monitoring is vital for many applications from medical to environmental and other industrial applications. Optically stimulated luminescence (OSL), thermo-luminescence (TL), radio-luminescence (RL), and radiation induced attenuation (RIA) are examples of dose detection and estimation methods.

Besides of variety of commercial sensors and detectors, optical fibres offer considerable potential dosimeter with inherent advantages compared to conventional methods, providing higher resolution and capable to be operated as real-time or offline monitoring. Designing a high-sensitive optical fibres are desired to generate significantly higher luminescence against low radiation doses.

This presentation is demonstrating a new method for increasing luminescence generation of optical fibres, started fundamentally from pure-silica to doped optical fibres. The purposed method is mainly based on collapsing fibre wall surfaces during fibre fabrication process. With this method, a thermoluminescence magnification up to 400 times is achieved by developing a collapsed-hole-photonic crystal fibre.