Affiliation: | (1) Department of Educational Technology, Liaocheng Teachers University, Liaocheng, 252059, People's Republic of China;(2) Laser Spectroscopy Laboratory, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei, 230031, People's Republic of China;(3) Institute of Optical Communication, Liaocheng Teachers University, Liaocheng, 252059, People's Republic of China |