Nanophotonics Seminar Friday, November 17, 2023 | 04:00 pm | Maxwell Dworkin Room 119 Refreshments will be served at 03:30 pm Prof. Cheng Wang (PhD Harvard 2017) from City U. Hong Kong will give a seminar titled “Integrated lithium niobate microwave and millimeter-wave photonic circuits" THIS Friday at 4pm in MD 119. [cid:image001.png@01DA17E2.057AE9C0] Abstract: Integrated microwave photonics (MWP) is a powerful technology that leverages integrated photonic technologies for the generation, transmission, and manipulation of microwave signals in chip-scale optical systems. In this talk, I will discuss our recent efforts on developing a thin-film lithium niobate (LN) MWP platform that simultaneously features efficient, linear, and high-speed electro-optic modulators for high-fidelity microwave-optic conversion, low-loss functional photonic networks that can be configured for a variety of signal processing tasks, as well as large-scale, low-cost manufacturability. I will first discuss a variety of device-level building blocks with unprecedented performances, including low-loss photonic waveguides and resonators (0.03 dB/cm), broadband electro-optic modulators covering the entire millimeter-wave band (up to 300 GHz), high-linearity modulators with SFDR of 120 dB∙Hz4/5, broadband power-efficient frequency comb sources, as well as ultra-compact inverse-designed photonic elements. Building upon this platform, we further demonstrate high-performance MWP system applications, including ultrahigh-speed analog signal processing, image edge detection, and in-situ optical vector analyzers. Bio: Dr. Cheng Wang is an Associate Professor of Electrical Engineering at City University of Hong Kong. He received his B.S. degree in Microelectronics from Tsinghua University in 2012, and his S.M. (2015) and Ph.D. (2017) degrees, both in Electrical Engineering from Harvard University, supervised by Prof. Marko Lončar. After conducting research as a postdoctoral fellow at Harvard, he joined City University of Hong Kong as an Assistant Professor in 2018. Prof. Wang's research focuses on the design and nanofabrication technology of integrated photonic devices and circuits. His current research effort focuses on realizing integrated lithium niobate photonic circuits for applications in optical communications, millimeter-wave/terahertz technologies, nonlinear optics, and quantum photonics. Since joining CityU, Prof. Wang has received a number of awards in research, including the NSFC Excellent Young Scientist Fund (HK & Macau) (2019), the Croucher Innovation Award (2020), The President's Award, CityU (2020), and 35 Innovators Under 35 (China), MIT Technology Review (2021).