1. Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials Engineering University of Macau Avenida da Universidade, Taipa Macau 999078 China
2. Wuhan National Laboratory for Optoelectronics Huazhong University of Science and Technology Wuhan 430074 China
3. Department of Electromechanical Engineering University of Macau Macau 999078 China