Rice University

Events at Rice


Electrical and Computer Engineering
Dean of Engineering
Faculty Host: Aydin Babakhani

Speaker: Hossein Hashemi
Professor of Electrical Engineering

ECE Integrated Sensors and Systems Seminar: RF-Inspired Photonics: (1) Monolithic Optical Phased Arrays, (2) Laser Phase Noise Reduction (698/699)

Thursday, March 2, 2017
4:00 PM  to 5:00 PM

1064  Duncan Hall
Rice University
6100 Main St
Houston, Texas, USA

Advancements in semiconductor technology, compact scalable models, computer-aided design tools, and circuit architectures have enabled realization of complex electronic integrated systems consisting of millions to billions of components and operating at frequencies ranging from DC to hundreds of gigahertz for applications such as computation, communication, imaging, sensing, and display. The shorter wavelength at optical frequencies (around 1 micrometer), 1000 times less compared with signals at hundreds of gigahertz, enables realization of higher-resolution imaging/ranging and higher-speed communications schemes. This shorter wavelength, however, increases the sensitivity of optical components to fabrication tolerances and variations. This, combined with inadequate models, CAD tools, and systematic design methodologies, has hindered the realization of complex monolithic optical integrated systems. In this talk, it is shown that a holistic approach that takes inspirations from complex radio-frequency integrated circuits can enable realization of complex optical integrated circuits with unprecedented functionalities. The first part of this talk will cover the basics, applications, and past realizations of optical phased arrays followed by two demonstrations of large-scale monolithic optical phased arrays in a commercial foundry CMOS SOI technology. In the second part of the talk, feed-back and feed-forward techniques that can reduce the phase-noise of oscillators will be introduced. As a case study, an RF-inspired electro-optical feed-forward approach that reduces the phase-noise of semiconductor lasers over a wide frequency range will be shown.

Biography of Hossein Hashemi:
Hossein is a Professor of Electrical Engineering, Ming Hsieh Faculty Fellow, and the co-director of the Ming Hsieh Institute at the University of Southern California. His research interests include analog, mixed-signal, and radio-frequency integrated circuits; photonic integrated circuits; electro-optical integrated systems; and implantable integrated solutions. He received the B.S. and M.S. degrees in Electronics Engineering from the Sharif University of Technology, Tehran, Iran, in 1997 and 1999, respectively, and the M.S. and Ph.D. degrees in Electrical Engineering from the California Institute of Technology, Pasadena, in 2001 and 2003, respectively. Hossein is an Associate Editor for the IEEE Journal of Solid state Circuits (2013 – present). He was a Distinguished Lecturer for the IEEE Solid-State Circuits Society (2013 – 2014); member of the Technical Program Committee of IEEE International Solid-State Circuits Conference (ISSCC) (2011 – 2015), IEEE Radio Frequency Integrated Circuits (RFIC) Symposium (2011 – present), and the IEEE Compound Semiconductor Integrated Circuits Symposium (CSICS) (2010 – 2014); an Associate Editor for the IEEE Transactions on Circuits and Systems—Part I: Regular Papers (2006–2007) and the IEEE Transactions on Circuits and Systems—Part II: Express Briefs (2004–2005); and Guest Editor for the IEEE Journal of Solid state Circuits (Oct 2013 & Dec 2013). Hossein was the recipient of the 2016 Nokia Bell Labs Prize, 2015 IEEE Microwave Theory and Techniques Society (MTT-S) Outstanding Young Engineer Award, 2008 Defense Advanced Research Projects Agency (DARPA) Young Faculty Award, and a National Science Foundation (NSF) CAREER Award. He received the USC Viterbi School of Engineering Junior Faculty Research Award in 2008, and was recognized as a Distinguished Scholar for the Outstanding Achievement in Advancement of Engineering by the Association of Professors and Scholars of Iranian Heritage in 2011. He was a co-recipient of the 2004 IEEE Journal of Solid-State Circuits Best Paper Award for “A Fully-Integrated 24 GHz 8-Element Phased-Array Receiver in Silicon” and the 2007 IEEE International Solid-State Circuits Conference (ISSCC) Lewis Winner Award for Outstanding Paper for “A Fully Integrated 24 GHz 4-Channel Phased-Array Transceiver in 0.13um CMOS based on a Variable Phase Ring Oscillator and PLL Architecture”. Hossein is the co-editor of the books “Millimeter-Wave Silicon Technology: 60 GHz and Beyond” published by Springer in 2008, and “mm-Wave Silicon Power Amplifiers and Transmitters” published by the Cambridge University Press in 2016.

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