| Biography | |
|---|---|
 Prof. Hongjun Zheng School of Physics Science and Information Technology, Liaocheng University, China |
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| Title: Recent progresses in few mode (de)multiplexer for mode-division multiplexing | |
| Abstract: In recent years, mode-division multiplexing (MDM) using few-mode fibers (FMF) have been intensively investigated as the method to increase transmission capacity beyond the nonlinearity Shannon limit of single-mode fibers (SMF). FMF and it’s (de)multiplexers have drawn much attention in optical communications. In this invited presentation, recent progress in (de)multiplexers will be reviewed, including (de)multiplexers design and characteristics, as well as the wide applications. We firstly review some types of (de)multiplexers such as a spatial (de) multiplexers with glass phase plane, spatial (de)multiplexers with liquid crystal on silicon (LCOS) phase modulator, fiber (de)multiplexers with photonic lantern and fiber (de)multiplexers with directional coupler. Then, we propose a novel graded index fiber (de)multiplexers with directional coupler. Finally, we demonstrate some optical transmission systems based on FMF and (de)multiplexers for the front-haul transmission. | |
| Biography: Hongjun Zheng received his PH D. degree in microelectronics and solid state electronics from Huazhong University of Science and Technology, Wuhan Hubei, China, in 2007. He completed his two years research in Beijing Jiaotong University as a Post-doctor in 2012, finished his one year research in Shanghai Jiaotong University as a visting scholar in 2013, accomplished his one year research in CREOL, University of Central Florida, USA as a visting scholar in 2015. He is currently a professor in Shandong provincial key laboratory of optical communication science and technology, School of Physics Science and Information Technology, Liaocheng University. His current research interests include microwave photonics, fiber optics, optical fiber and electronics devices, waveguide devices and Optical Communication system, etc. He is a senior member of the Chinese Optics Society and a lifetime member of the Chinese Physical Society. He has authored and coauthored over 80 peer-reviewed journal publications and conference papers, one book (Science press), more than 10 Chinese patents and 5 software copyrights. He has honored with several prizes such as the 2nd Prize of Shandong Provincial Science and Technology Award and 3rd Prize of Shandong Provincial Science and Technology Award. He has given several invited talks in leading optics, photonics and optics communications conferences including CIOP and OFCIO. Now he is a presider of the National Natural Science Foundation of China. | |
