1. Ph.D. Candidate, Key Laboratory of Optoelectronic Technology and System of China Education Ministry, Chongqing Univ., Chongqing 400044, PR China.
2. Professor, Key Laboratory of Optoelectronic Technology and System of China Education Ministry, Chongqing Univ., Chongqing 400044, PR China (corresponding author).
3. Professor, Key Laboratory of Optoelectronic Technology and System of China Education Ministry, Chongqing Univ., Chongqing 400044, PR China.