1. Department of Electrical Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China
2. Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, China
3. BGI-Shenzhen, Shenzhen 518083, Guangdong, China
4. Guangdong High-Throughput Sequencing Research Center, Shenzhen, Guangdong, China
5. School of Instrument Science and Optoelectronics Engineering, Hefei University of Technology, Hefei 230009, China
6. Aston Institute of Photonic Technologies, Aston University, Birmingham B4 7ET, U.K.
7. National Engineering Laboratory for Fiber Optic Sensing Technology, Wuhan University of Technology, Wuhan, China