Abstract

The next-generation C-RAN fronthaul network needs to simultaneously increase communication capacity, reduce communication latency, and strengthen fronthaul network intelligence. It also needs to consider the principles of ESG (Environmental, Social, and Governance) in its design and operation. Optical fiber communication technology has significantly improved communication capacity, such as the continued development of ultra-high-capacity optical communication technology above 400Gbps. How fiber optic communication technology combines SDN and MEC technology will be an essential development direction for the intelligent fronthaul network. The concept of using optical circuit switches with SDN has gradually emerged. This technology can be used with traditional L1 physical layer communication based on optical transmission and then with SDN technology above L2 to enhance the intelligence of the fronthaul network. In addition, since optical circuit switches is capable of channel routing without OE conversion, some communication tasks that require low latency do not need to be sent back to the cloud for digital signal processing, thus helping to reduce communication latency. However, recent academic research on optical circuit switches and SDN technology has focused on optical baseband transmission, All-optical signal processing and MWP circuit switches research and developments are still rare. In this context, in this talk we will discuss the design and research of a new type of MWP subsystem based on Sub-carrier Multiplexing (SCM). We will demonstrate the SCM light source that can be applied to ultra-large capacity (above 400Gbps) and various SCM light sources that can be used with an integrated all-optical signal processing system.

Bio.

Dr. Yu-Han Hung received MS and PhD degrees from National Cheng Kung University studying nonlinear dynamics of semiconductor lasers and their applications in 2012 and 2016, respectively. He then stayed as a postdoctoral research fellow for two years before he moved to Columbia University as a postdoctoral research scientist. At NCKU, He worked on a broad range of subjects that include nonlinear semiconductor laser dynamics for optical signal processing, phase-locking of period-one nonlinear laser dynamics for ultra-stable microwave generation, microwave photonics, and optoelectronics. From Jun. 2018 to Nov. 2020, he worked on high-performance computing (HPC) system design for accelerating distributed deep learning, HPC & datacenter network optimization, and Silicon Photonics (SiP)-based devices/interconnects for datacenters and HPC systems at Columbia University. He then moved back to Taiwan to serve as a researcher for Chunghwa telecom Laboratories from March 2021 to Jan. 2022. He is now an Assistant Professor at the Department of Photonics, National Sun-Yat sen University. He is also the Principal Investigator of the intelligent Photonic System Design Lab (iPSDL), National Sun-Yat sen University. His research includes C-RAN, Optical fiber communication, microwave photonics, optical signal processing, and Software-Defined Networking.

All faculty and students are welcome to join.