1. College of Physics and Optoelectronic Engineering, Harbin Engineering University,Key Laboratory of In-Fiber Integrated Optics of Ministry of Education,Harbin,China,150001
2. Shenzhen Technology University,Shenzhen,China,518118
3. School of Optoelectronic Engineering, Guilin University of Electronic Technology,Photonics Research Center,Guilin,China,541004