Yogendra Kumar Prajapati received the Ph.D. degree from the Electronics Engineering Department, Uttar Pradesh Technical University, Lucknow, Uttar Pradesh, India, in 2010. He is currently an Associate Professor in Motilal Nehru National Institute of Technology Allahabad, Prayagraj, Uttar Pradesh, India. Dr. Yogendra has made a significant contribution in experimental and theoretical research in the areas of Photonics. He has successfully completed a number of R & D projects sponsored by government funding agencies such as, DST, BRNS etc. He has published more than 108 SCI research papers in peer-reviewed journals and 45 International Conference proceedings. He is a recipient of Sir Visvesvaraya Young Faculty Research Fellowship Award 2016, Ministry of Electronics and Information Technology, New Delhi, India and teacher fellowship from Dr. A.P.J. Abdul Kalam Technical University, Lucknow in 2007. Also, Dr. Yogendra is a recipient of Young Scientist Award by DST, SERB New Delhi in 2014. His research interests include Optical Communication, Optical Fiber sensors, Photonic Spin Hall Effect, Fabrication and characterization of SPR sensors and absorbers. He is an active reviewer of many scientific sensors related journals, and Associate Editor of the IEEE Access.