1. Key Laboratory of In-Fiber Integrated Optics
2. Ministry of Education and College of Science
3. Harbin Engineering University
4. Harbin 150001
5. China
6. College of Materials Science and Chemical Engineering
7. Key Laboratory for Photonic and Electronic Bandgap Materials
8. Ministry of Education, and School of Physics and Electronic Engineering
9. Harbin Normal University
10. Harbin 150025