[Deng, Zhixiang; Fan, Dianyuan; Chen, Yu; Liu, Jun] Shenzhen Univ, Coll Optoelect Engn, Minist Educ & Guangdong, Key Lab Optoelect Devices & Syst,Int Collaborat L, Shenzhen 518060, Peoples R China.
[Deng, Zhixiang] Univ South China, Sch Elect Engn, Hengyang 421001, Peoples R China.
[Liu, Jun] Aston Univ, Sch Engn & Appl Sci, Aston Inst Photon Technol, Birmingham B4 7ET, W Midlands, England.
[Zhao, Chujun] Hunan Univ, IFSA Collaborat Innovat Ctr, Sch Phys & Elect, Minist Educ,Lab Micro Nanooptoelect Devices, Changsha 410082, Hunan, Peoples R China.