**About the Editor**

**Tsvetanka Babeva** is currently a Full Professor and Director of the Institute of Optical Materials and Technology at the Bulgarian Academy of Sciences, Sofia, Bulgaria. She received her Ph.D. in Physics from the Bulgarian Academy of Science in 2003 and completed her habilitation in 2010. Her professional experience includes 24 years as a scientist at the Bulgarian Academy of Sciences and 2 years as an Arnold F. Graves fellow at the Centre of Industrial and Engineering Optics at Technical University Dublin, Ireland. Her present research is devoted to the design, preparation and optical characterization of thin films and structures and developing of porous materials and photonic structures for optical sensing applications.
