Event Details

Dense photonic integration requires miniaturization of materials, devices, circuits and systems, including passive components (e.g., engineered composite metamaterials, filters, etc.), active components (e.g., modulators and nonlinear wave mixers) and integrated circuits (Fourier transform spectrometer, programmable phase modulator of free space modes, linear algebra processors, etc.). In this talk we will discuss recent progress in developing CMOS compatible nonlinear optical materials as well as examples of foundry enabled silicon photonic circuits and systems. Specifically, we will review silicon photonics-based Fourier transform spectrometer (Si-FTS) that can bring broadband operation and fine resolution to the chip scale. Here we will present the modeling and experimental demonstration of a thermally tuned Si-FTS accounting for dispersion, thermo-optic non-linearity, and thermal expansion. We show how these effects modify the relation between the spectrum and interferogram of a light source and we develop a quantitative correction procedure through calibration with a tunable laser. Providing design flexibility and robustness, the Si-FTS is poised to become a fundamental building block for on-chip spectroscopy. Moreover, taking advantage of nanofabrication we will discuss on-chip spectrometers using stratified waveguide filters and machine learning. Moving forward, we will discuss chip-scale integrated circuit/system that will allow to realize linear algebra accelerators with superior performance in speed, energy consumption and size compared to its electronic counterpart. Such system can be manufactured using monolithic CMOS process and impact such applications as 5G/6G and beyond wireless MIMO systems as well as deep learning and artificial intelligence.

April 4, 2025

Join Zoom Meeting
https://usc.zoom.us/j/97017422125?pwd=Dbrt8MNMrmBV3xalKQJcAiNsggFJjJ.1&from=addon
Meeting ID: 970 1742 2125
Passcode: 937624

Host: Steve Crago
POC: Amy Kasmir

Speaker Bio

Yeshaiahu (Shaya) Fainman is an inaugural ASML/Cymer Chair of Advanced Optical Technologies and Distinguished Professor in Electrical and Computer Engineering (ECE) at the University of California, San Diego (UCSD). He received the M. Sc and Ph. D degrees from Technion-Israel Institute of Technology in 1979 and 1983, respectively. He is directing research of the Ultrafast and Nanoscale Optics group at UCSD and made significant contributions to near field optical phenomena, nanoscale science and engineering of ultra-small, sub-micrometer semiconductor light emitters and nanolasers, inhomogeneous and meta-materials, nanophotonics and plasmonics, non-conventional imaging and silicon photonics. His current research interests are in near field optical science and optical technology with applications targeting information technologies and biomedical sensing. He contributed over 360 manuscripts in peer review journals and over 560 conference presentations and conference proceedings. During his career he has led as Director and Deputy Director of numerous large size interdisciplinary projects and centers supported by BMDO, DARPA, NSF-ERC, and ONR. He is a Fellow of the OSA, IEEE, SPIE, and a recipient of the Miriam and Aharon Gutvirt Prize, Lady Davis Fellowship, Brown Award, SPIE Gabor Award, OSA Emmett N. Leith Medal, OSA Joseph Fraunhofer Award/Robert M. Burley Prize and OPTICA (former OSA) Nick Holonyak Jr Award.