[1] Tianjin Univ Technol, Engn Res Ctr Commun Devices & Technol, Tianjin Key Lab Film Elect & Commun Devices, Sch Elect Informat Engn,Minist Educ, Tianjin 300384, Peoples R China
[2] Tianjin Univ Technol, Engn Res Ctr Commun Devices & Technol, Sch Comp & Commun Engn, Minist Educ, Tianjin 300384, Peoples R China
[3] Tianjin Univ, Coll Precis Instrument & Optoelect Engn, Key Lab Optoelect informat Sci & Technol, Inst Laser & Optoelect,Minist Educ, Tianjin 300072, Peoples R China