报告摘要：Light is a powerful tool for the analysis of chemical  and biological species in complex environments. Traditional optical sensors are bulky, costly instruments often  involving mechanical moving parts, which severely  limits their deployment in practical applications. Photonic integration offers a  solution to miniaturize optical sensors into a  rugged, chip-scale platform that can be mass produced using mature  microfabrication techniques in the same manner as  electronic chips. On-chip integration further provides unprecedented flexibility in implementing novel device designs,  which naturally gives rise to the question: what  makes the best chip-scale photonic sensor?   In this talk, we will provide a detailed account  regarding the design rationales of different essential components of a photonic sensing system: the sensing element, the  light source, and the light analyzer. Specifically, I will start by discussing our recent theoretical  work that resolves a longstanding controversy over the optimal waveguide sensor design. I will then introduce  digital Fourier Transform (dFT) spectroscopy, a  chip-scale spectrometer technology offering superior performance and scalability  ideally suited for on-chip photonic sensing.  Lastly, I will review our work on integration of on-chip supercontinuum sources with waveguide sensors towards a  fully-integrated, miniaturized spectroscopic sensing system. 

报告人简介：胡崛隽目前担任美国麻省理工学院材料科学与工程系终身副教授。分别于清华大学和麻省理工学院获得学士和博士学位。主要研究兴趣是集成光子学。主要获奖包括：the SPIE Early Career Achievement  Award, the Robert L. Coble Award from the American Ceramic Society, the DARPA Young Faculty Award, the NSF CAREER Award等等。