1. School
of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798
2. CINTRA CNRS/NTU/THALES,
UMI 3288, Research Techno Plaza, 50
Nanyang Drive, Border X Block, Singapore, 637553
3. State
Key Laboratory of Modern Optical Instrumentation, Centre for Optical
and Electromagnetics Research, Zhejiang University, Hangzhou 310058, China
4. Key
Laboratory of Optoelectronics Devices and Systems of Ministry of Education/Guangdong
Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
5. Institut
d’Electronique, de Microélectronique et de Nanotechnologie
(IEMN), CNRS UMR 8520−Université de Lille 1, 59650 Villeneuve d’Ascq, France