He received his PhD from Gwangju Institute of Science and Technology (GIST), Korea for his study on specialty fibre design and fabrication. He joined the Optoelectronic Research Centre (ORC) at University of Southampton, UK, as a post-doctoral research fellow in 2005. Since then, his research has centred on specialty fibre development for high power fibre lase applications. He has been involved in various projects in high power specialty fibre development for industry and scientific studies. Since joining NTU, his research interests include rare-earth doped fibres, high nonlinearity fibres and micro-structured fibres for light source applications.