副教授

刘洁，2014年加入中山大学工作。主要研究领域为空分复用光纤通信系统、特殊光子计算等，主要致力于光学原理与人工智能技术的结合（具体请见研究方向简介）。在包括Laser and Photonics Reviews, Photonics Research, Optics Express 、Optics Letters， Journal of Lightwave Technology?在内的中科院JCR一区、二区期刊，以及包括OFC、ECOC，CLEO等在内的重要国际学术会议上，以第一作者或通信作者共发表论文40余篇，以第一发明人获授权发明专利7项，其中美国专利2项。以项目负责人身份承担国家自然科学基金两项（面上、青年基金项目各一项），广东省自然科学基金两项，国家重点实验室开放课题一项，同时以项目骨干人员（排名前两位）参与国家重点研发计划项目课题两项。
任职中山大学以来，已指导多名研究生毕业，其毕业后工作去向包括华为、IBM等公司，以及香港理工大学、中山大学等高校继续深造。
任职中山大学以来，已指导10余名本科生完成毕业设计或科研计划，其中绝大多数同学以第一作者或者主要作者（前三位）在本领域重要期刊、国际会议上发表文章，或者申请发明专利。其中一名同学以第一作者身份在本领域top期刊Optics Express（影响因子3.3，汤森路透JCR一区）发表论文一篇。这些成果为同学们接下去在包括中山大学在内的国内外高校的继续深造，打下坚实科研基础。
欢迎光电信息科学与工程、微电子科学与工程、电子与通信工程等相关专业的同学前来咨询讨论（Email: liujie47@mail.sysu.edu.cn）。
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学术兼职和社会服务:
任Photonics Research、Optics Express 、Optics Letters等期刊审稿人。

教育经历:
2007/9 - 2012/6，浙江大学，光学工程（光通信技术），博士
2010/10-2011/10，佐治亚理工学院（美国），电子计算机系，联合培养博士
2003/9 - 2007/6，浙江大学，信息工程（光电），学士

授课课程:
本科生课程：
《通信原理》、《模拟电路实验》
研究生课程：
《光通信原理与系统》

研究方向:
研究方向简介：主要是面向空分复用大容量光纤通信、光子计算和光纤传感三个方向，致力于光学原理与人工智能技术的结合，其中光纤通信、光纤传感两个方向，主要利用机器学习算法（或深度学习算法）探究常规光学原理研究中不易实现或发现的部分，进而实现对光学器件/光通信系统的性能改进；而光子计算，则是探索光学非线性原理与神经网络之间的映射关系，利用光学/光电系统实现硬件上对神经网络系统的模拟，完成一些现有常规数字计算机系统不易实现的特种计算。

科研项目:
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代表性科研成果:
一、主要期刊论文代表作
Junwei Zhang, Junyi Liu, Lei Shen, Lei Zhang, Jie Luo, Jie Liu*, and Siyuan Yu*, "Mode-division multiplexed transmission of wavelength-division multiplexing signals over a 100-km single-span orbital angular momentum fiber," Photon. Res.?8, 1236-1242 (2020).?
Junwei Zhang, Junyi Liu, Zhenrui Lin, Jie Liu*, Lei Shen and Siyuan Yu*, “Nonlinearity-Aware Adaptive Bit and Power Loading DMT Transmission over Low-Crosstalk Ring-Core Fiber with Mode Group Multiplexing,“J. Lightw. Technol. (2020).
Heyun Tan , Junhong Deng , Ruizhe Zhao,? Xiong Wu,? Guixin Li,? Lingling Huang*, Jie Liu*, and? Xinlun Cai, ”A Free‐Space Orbital Angular Momentum Multiplexing Communication System Based on a Metasurface,” Laser & Photonics Reviews, 2019/05/08, 13(6):**.
Junwei Zhang, Changjian Guo * ,? Jie Liu*, Xiong Wu, Alan Pak Tao Lau, Chao Lu, and Siyuan Yu, “Decision-Feedback Frequency-Domain Volterra Nonlinear Equalizer for IM/DD OFDM Long-Reach PON,” Journal of Lightwave Technology(ISSN:0733-8724 ), 2019/05/07, 37(13), 3333-3342.
Jie Liu*, Guoxuan Zhu, Junwei Zhang, Yuanhui Wen, Xiong Wu, Yanfeng Zhang, Yujie Chen, Xinlun Cai, Zhaohui Li, Ziyang Hu, Jiangbo Zhu, and Siyuan Yu* (invited paper), "Mode Division Multiplexing Based on Ring Core Optical Fibers," IEEE Journal of Quantum Electronics(ISSN: 0018-9197), 2018/10, 54(5): 070.
Junwei Zhang#, Guoxuan Zhu#, Jie Liu*, Xiong Wu, Jiangbo Zhu, Cheng Du, Wenyong Luo, Yujie Chen, and Siyuan Yu, “Orbital-angular-momentum mode-group multiplexed transmission over a graded-index ring-core fiber based on receive diversity and maximal ratio combining,” Optics express, 2018, 26(4): 4243-4257.
?Guoxuan Zhu, Ziyang Hu, Xiong Wu, Cheng Du, Wenyong Luo, Yujie Chen, Xinlun Cai, Jie Liu*, Jiangbo Zhu*, and Siyuan Yu, “Scalable mode division multiplexed transmission over a 10-km ring-core fiber using high-order orbital angular momentum modes,” Optics Express 2018, 26(2): 594-604.
?Pengyu Chen, Jie Liu*, Xiong Wu, Kangping Zhong, and Xiaofeng Mai, “Subtraction-Clustering-Based Modulation Format Identification in Stokes Space,” IEEE Photonics Technology Letters, 2017, 29(17): 1439-1442.
?Xiaofeng Mai, Jie Liu*, Xiong Wu, Qun Zhang, Changjian Guo, Yanfu Yang, and Zhaohui Li, "Stokes space modulationformat classification based on non-iterative clustering algorithm for coherent optical receivers," Optics Express, 2017, 25 (3): 2038-2050.
Jie Liu, Nan Guo, Zhaohui Li*, Changyuan Yu, and Chao Lu, “An ultrahigh-Q microwave photonic filter with tunable Q value utilizing cascaded optical-electrical feedback loops,” OPTICS LETTERS, 2013, 38(21), 4304-4307.
二、光通信领域顶级会议论文
Chuming Shi#, Lei Shen #, Junwei Zhang , Junyi Liu , Lei Zhang, Jie Luo, Jie Liu* and Siyuan Yu *, “Ultra-Low Inter-Mode-Group Crosstalk Ring-Core Fiber Optimized Using Neural Networks and Genetic Algorithm?,” OFC 2020, San Diego, USA, 2020/03.第一作者单位：中山大学.
Junwei Zhang, Junyi Liu, Zhenrui Lin, Jie Liu*, Lei Shen, and Siyuan Yu, “Nonlinearity-Aware OAM Mode-Group Multiplexed Transmission over 1-km Ring-Core Fiber with Low HighOrder Inter-Mode-Group Crosstalk,” CLEO 2020, paper STh1L.4.
Lei Shen #, Junwei Zhang# , Junyi Liu , Guoxuan Zhu, Zhenrui Lin , Yiyang Luo, Zhuofeng Luo , Lei Zhang, Jie Luo, Changjian Guo, Jie Liu*, and Siyuan, “MIMO-FREE WDM-MDM TRANSMISSION OVER 100-KM SINGLE-SPAN RING-CORE FIBRE,” ECOC 2019, Dublin, Ireland, 2019/09.
Heyun Tan , Junwei Zhang , Jie Liu* , Lei Shen*, Guoxuan Zhu , Rui Zhang, Yaping Liu, Lei Zhang, and Siyuan Yu, "Low-Loss Ring-Core Fiber Supporting 4 Mode Groups," in Conference on Lasers and Electro-Optics, OSA Technical Digest (Optical Society of America, 2019), paper SM2L.4. .
Junwei Zhang#, Yuanhui Wen#, Heyun Tan, Jie Liu*, Lei Shen, Maochun Wang , Jiangbo Zhu, Changjian Guo, Yujie Chen, Zhaohui Li, and Siyuan Yu*, “80-Channel WDM-MDM Transmission over 50-km Ring-Core Fiber Using a Compact OAM DEMUX and Modular 4×4 MIMO Equalization,” OFC 2019, San Diego, USA, 2019/03.
Rui Zhang#, Heyun Tan#，Junwei Zhang, Lei Shen*, Jie Liu*, Yaping Liu; Lei Zhang, Siyuan Yu*, “A novel ring-core fiber supporting MIMO-free 50km transmission over high-order OAM modes?,” OFC 2019, San Diego, USA, 2019/03.
Baoxian Yu, Changjian Guo, Langyu Yi, Han Zhang, Jie Liu*, Xianhua Dai *, Alan Pak Tao Lau, and Chao Lu, "Dispersion Tolerant 66.7-Gb/s SEFDM IM/DD Transmission over 77-km SSMF", ECOC 2018, Roma, 2018/10.
J. Zhang, C. Guo, J. Liu*, X. Wu, A. P. T. Lau, C. Lu, and S. Yu, “Low Complexity Frequency-Domain Nonlinear Equalization for Long-Reach PON,” OFC 2018, San Diego,??USA, 2018.03.11 – 03.15.
?G. Zhu^#, J. Zhu^#, X. Wu, J. Liu*, C. Du, H. Yan, Z. Hu, X. Wang, Y. Chen, W. Luo, S. Li, X. Zheng, X. Cai and S. Yu*, “Scalable Orbital Angular Momentum Mode Division Multiplexing Transmission over 10km Graded-index Ring-core Fiber,” ECOC 2017, Gothenburg, Sweden, 2017. 10.17-10.21
?J. Liu, Z. Dong, K. Zhong, A. P. T. Lau, C. Lu and Y. Lu, “Modulation Format Identification Based on Received Signal Power Distributions for Digital Coherent Receivers,” OFC 2014, San Francisco, USA, 2014.03.9 – 03.13.