Affiliation: | 1. Library, Ludong University, Yantai, Shandong 264025, China;2. School of Physics and Optoelectronic Engineering, Ludong University, Yantai, Shandong 264025, China;1. Laboratory of Signals and Systems (L2S, UMR CNRS 8506), CNRS - CentraleSupelec - Paris-Sud University, 3 rue Joliot Curie, 91192 Gif-sur-Yvette, France |