Zhang, Jinnan
Ai, Lingmei
Yan, Xin
Wu, Yao
Wei, Wei
Zhang, Mingqian
Zhang, Xia
Funding for this research was provided by:
National Natural Science Foundation of China (61774021, 61376019)
National Natural Science Foundation of China (61504010)
Fund of State Key Laboratory of Information Photonics and Optical Communications (Beijing University of Posts and Telecommunications), People’s Republic of China (IPOC2017ZT02)
Fundamental Research Funds for the Central Universities (2018XKJC05)
Article History
Received: 3 July 2018
Accepted: 21 September 2018
First Online: 3 October 2018
Competing Interests
: The authors declare that they have no competing interests.
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