People

Yang, Chuanchuan

Associate Professor

Research Interests: Optical fiber communications and optical fiber sensors

Office Phone: 86-10-6276 6258

Email: yangchuanchuan@pku.edu.cn

Yang, Chuanchuan is an associate professor in the Department of Electronics Engineering, School of EECS since 2013. She obtained her B.Sc. from University of Electronic Science and technology of China in 1999, and Ph.D. from Peking University in 2008 respectively. Her research interests span high-speed optical transmission systems, passive optical networks (PON) and optical fiber sensors.

Dr. Yang has published more than 50 research papers, most of which are included in top-tier journals and conferences, such as Optics Letters, IEEE Journal of Lightwave Technology and IEEE Photonics Technology Letters. She was awarded Best PhD Dissertation Award in 2010 and Outstanding Postdoctoral Award in 2009 by Peking University. As the principle investigator, she was granted more than ten projects  funded by National Natural Science Foundation of China, Ministry of Science and Technology of China, Huawei Corporation, ZTE Corporation etc. She is a senior member of the IEEE and has 7 invention patents issued.

Her selected research achievements are listed as follows.

1) Suppression of phase noise in PONcoherent optical communication technology is regarded as a promising solution for the next-generation PON due to its high channel capacity. The deployment of seas of OLT and ONU implies that cost-effective DFB lasers and low-power VCSEL lasers are the first choice. However, coherent optical communications are very sensitive to phase noise, which limits the wide use of inexpensive, low power lasers. She carried out extensive studies on fundamental issues of phase noise and proposed a family of efficient phase noise suppression methods. Moreover, she established a general theoretical framework on modeling, analysis and suppression of phase noise. The work helps coherent optical communication technology stand out from its competitors towards the next generation PON and beyond.

2) Digital signal processing technology for fiber optic gyroscopefiber optic gyroscope (FOG) is an angular velocity sensor which is crucial to control & navigation systems and aerospace science. High precision and large dynamic range are always the goals that FOG has been pursuing. She devised a series of signal processing algorithms for open-loop FOGs and successfully prototyped the ideas. Experiments show that accuracy and dynamic range can be respectively improved by more than 10x and 60x, compared with the traditional counterparts. Her work overcomes the shortcomings of open-loop FOG in terms of dynamic range.

3) Methodology of energy analysis for C-RAN : Cloud radio access network (C-RAN) is a novel network architecture to meet the increasing user demands in an energy efficient way and was adopted by 3GPP as an enabler of 5G. For the first time, she analyzed the network-wide energy consumption of the C-RAN employing Ethernet-based TDM-PON (i.e. 10G EPON) as the optical front-haul. Based on queueing theory, she provided a new network traffic modeling for energy analysis and proposed a strategy to minimize network-wide energy consumption constrained by the demands of quality of service (QoS). The work justifies the potential of C-RAN in terms of energy saving.