1CINTRA CNRS/NTU/Thales, UMI 3288, 50 Nanyang Drive, Singapore
2COFT, School of EEE, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798
3National Engineering Laboratory for Next Generation Internet Access System, School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074, People’s Republic of China
4Thales Solutions Asia Pte Ltd, R&T, 28 Changi North Rise, Singapore 498755
5Yangtze Optical Fibre and Cable Company Ltd (YOFC), 4# Guanshan Er Road, Wuhan 430073, People’s Republic of China