Yunyun Huang,a Aoxiang Xiao,a Guanhua Hou,a Hongtao Li,a Tuan Guoa and Bai-Ou Guan*a
暨南大学关柏鸥教授
a Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou 210632, China