Pankaj K. Choudhury held academic positions in India, Canada, Japan, and Malaysia, and currently a professor at the International Research Center for Advanced Photonics, Zhejiang University (Haining, China). He is a Fellow of IET and SPIE, a Senior Member of IEEE and Optica, a Chartered Engineer (CEng) registered with the Engineering Council (UK), and the editor-in-chief of the Journal of Electromagnetic Waves and Applications (Taylor & Francis, UK). His research interests lie in the theory of optical waveguides, which include complex mediums, fibre optic devices, optical sensors, and metamaterial properties. Tatjana Gric is a professor at Vilnius Gedimina Technical University (Vilnius, Lithuania). She has been engaged, since 2003, in the investigation of waveguide devices and researches plasmonics as the examination of the light-matter interaction. During the past few years, she has been working on the investigation of nanostructured composites and their fascinating properties.