Jiang Xu
Hong Kong University of Science and Technology, Hong Kong
BOSIM: A Comprehensive Electro-Optical Model for Silicon Photonic Switches
Abstract
Photonic technologies are revolutionizing computing systems by improving the energy efficiency, bandwidth, and latency of data transmission and processing. Silicon photonic switches, such as microresonator and Mach-Zehnder Interferometer (MZI), are the basic building blocks of optical circuits. This work proposes a SPICE-compatible electro-optical co-simulation model, BOSIM, to systematically study optical modulators using PN, PIN, and metal-insulator-silicon (MIS) capacitor device technologies. BOSIM holistically models both transient and steady state properties, such as switching speed, power, transmission spectrum, area and carrier distribution. BOSIM is validated by the measured data from eight research groups and companies. Compared to microresonators, BOSIM shows MZIs are fast, with a high extinction ratio and large bandwidth but in the sacrifice of loss, energy, and area. Using a PIN diode over a PN diode can save area, but retain the loss and energy, while an MIS capacitor has the shock response of carrier distribution in a narrow range and is marginalized gradually. For instance, an MZI can achieve a 2.5X bit rate, 6.06X extinction ratio, 71.04X 3dB bandwidth, but costs at least 1.93X passing loss, 1.46X energy consumption and 16.67X area, compared with microresonator.
Biography
Jiang Xu received his Ph.D. degree from Princeton University. From 2001 to 2002, he worked at Bell Labs, NJ, as a Research Associate and discovered the First Generation Dilemma in platform-based SoC design methodologies. He was a Research Associate at NEC Laboratories America, NJ, from 2003 to 2005 and working on Network-on-Chip designs and implementations. He joined a startup company, Sandbridge Technologies, NY, from 2005 to 2007 and worked on the development and implementation of two generations of NoC-based ultra-low power Multiprocessor Systems-on-Chip for mobile platforms. Dr. Xu established Big Data System Lab, Xilinx-HKUST Joint Lab, and OPTICS (Optical/Photonic Technology for Interconnected Computing System) Lab, at the Hong Kong University of Science and Technology. He currently serves as the Associate Editor for IEEE Transactions on Computer-Aided Design of Integrated Circuits and Systems, Associate Editor for IEEE Transactions on Very Large Scale Integration Systems, and Area Editor of Hardware and Architecture Design for ACM Transactions on Embedded Computing Systems. He served on the steering committees, organizing committees, and technical program committees of many international conferences, including DAC, DATE, ASP-DAC, ICCAD, CASES, ICCD, CODES+ISSS, NOCS, HiPEAC, etc. Dr. Xu was an IEEE Distinguished Lecturer and an ACM Distinguished Speaker. He authored and coauthored more than 120 book chapters and papers in peer-reviewed journals and international conferences. He authored more than 120 book chapters and papers in peer-reviewed international journals and conferences. He and his students received IEEE Technical Committee on VLSI Best Paper Award of ISVLSI in 2018, Best Paper Award from IEEE Computer Society Annual Symposium on VLSI in 2009, and Best Poster Award from AMD Technical Forum and Exhibition in 2010. He coauthored a book titled Algorithms, Architecture and System-on-Chip Design for Wireless Applications (Cambridge University Press). His research areas include big data system, heterogeneous computing, optical interconnection network, power delivery and management, MPSoC, low-power embedded system, hardware/software codesign.