作者机构:Key Lab. of All Optical Network and Advanced Telecommunication Network of Education Ministry of China, and Institute of Lightwave Technology, Beijing Jiaotong University, Beijing 100044, China
相关基金:This work has been supported by the National Natural Science Foundation of China (No. 60837002), National High Technology Research and Development Program of China (No.2008AA01Z15), and Beijing Jiaotong University Foundation (Nos.2008RC051 and 2008RC050).