Seung-Yeol Lee obtained his PhD degree in 2014 from the Seoul National University, Korea, for research in the areas of nanophotonics, plasmonics, and optical engineering. He participated as a post-doctoral researcher for about two years in the optical engineering and quantum electronics lab at Seoul National University, and he was a researcher at the Electronics and Telecommunications Research Institute (ETRI) for about one year until August 2016. Seung-Yeol Lee is currently an associate professor at Kyungpook National University, School of Electronics and Electrical Engineering.