Pankaj K. Choudhury received a Ph. D. degree in Physics in 1992. He held academic positions in India, Canada, Japan, Malaysia, and China. During 2003-2009, he was a professor at the Faculty of Engineering, Multimedia University (Cyberjaya, Malaysia). During the span, he also served the Telekom Research and Development (TMR&D, Malaysia) as a consultant for projects on optical devices. Thereafter, he became a professor at the Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia (Malaysia). Currently he is a professor at the College of Optical Science and Engineering, International Research Center for Advanced Photonics, Zhejiang University (China). His research interests lie in the theory of optical waveguides, which include complex mediums, fiber optic devices, optical sensors and metamaterial properties. He has published over 280 research papers, contributed chapters to 24 books, and edited and co-edited 10 research level books. He is a reviewer for over fifty research journals. Also, he is the Section Editor of Optik – International Journal for Light and Electron Optics (Elsevier, The Netherlands) and the Editor-in-Chief of the Journal of Electromagnetic Waves and Applications (Taylor & Francis, UK). He is a Fellow of IET (UK) and SPIE (USA), and a Senior Member of IEEE (USA) and Optica (USA). He is a Traveling Lecturer of Optica. Apart from these, he is a Chartered Engineer (C.Eng.) registered with the Engineering Council (UK).