[Liu, Yu; Zhou, Ke; Hu, Guangxing; Guan, Yunchuan; Wang, Hua; Jiang, Tianming] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China.
[Jiang, Tianming] Cent China Normal Univ, Sch Informat Management, Wuhan 430079, Peoples R China.
[Liu, Yu] Huazhong Univ Sci & Technol, Sch Comp Sci & Technol, Wuhan 430074, Peoples R China.
[Cheng, Zhuo; Zhang, Ji; Fang, Wei] HUAWEI Technol, Innovat Ctr Data Storage, Chengdu 611730, Peoples R China.
[Huang, Ping] Temple Univ, Philadelphia, PA USA.