Ubaid Ullah received the B.S. degree in electronics from the University of Peshawar in 2014 and the M.Phil. degree in electronics from Quaid-i-Azam University in 2016. He is currently pursuing the Ph.D. degree with the Bio-Agri-Photonics Laboratory, Lahore University of Management Sciences. His research interests include Raman spectroscopy and optical sensors based on fiber cavities.