[1] Hebei Univ Technol, Sch Elect & Informat Engn, Tianjin Key Lab Elect Mat & Devices, 5340 Xiping Rd, Tianjin 300401, Peoples R China
[2] Jilin Univ, Coll Elect Sci & Engn, State Key Lab Integrated Optoelect, 2699 Qianjin St, Changchun 130012, Jilin, Peoples R China
[3] Tsinghua Univ, Dept Precis Instrument, State Key Lab Precis Measurement Technol & Instru, Beijing 100084, Peoples R China