1. National Synchrotron Radiation Research Center
2. Hsinchu 30076
3. Taiwan
4. Department of Electro-Optical Engineering
5. National Taipei University of Technology
6. Taipei 10608
7. Material and Chemical Research Laboratories
8. Industrial Technology Research Institute
9. Hsinchu 31040
10. Department of Photonics
11. Institute of Electro-Optical Engineering
12. National Chiao Tung University
13. Hsinchu 30010