1. Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore 117583, Singapore
2. Institute of Materials Research and Engineering, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, #08-03 Innovis, 138634 Singapore
3. Data Storage Institute, A*STAR (Agency for Science, Technology and Research), 2 Fusionopolis Way, #08-01 Innovis, 138634 Singapore
4. Department of Mechanical Engineering, Faculty of Engineering, National University of Singapore, 9 Engineering Drive 1, 117575, Singapore
5. Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications, Institute of Photonics Technology, Jinan University, Guangzhou, 510632 China
6. Nonlinear Physics Centre, Australian National University, Canberra ACT 2601, Australia
7. Singapore University of Technology and Design, 8 Somapah Road, 487372 Singapore