Affiliation: | 1. State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, 100876, Beijing, China 2. Institute of Infrared Optical Fibers and Sensors, Physics Department, Yanshan University, 066004, Qinhuangdao, China 3. Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, South China Normal University, 510006, Guangzhou, China
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