Boston Chapter of the IEEE Photonics Society

Abstract:  Chalcogenide glasses (ChGs) are amorphous compounds containing S, Se or Te. In recent years, they are rapidly emerging as an important optical material given their broadband infrared transparency and large Kerr nonlinearity. In addition to their exceptional optical properties, these glasses can be monolithically deposited and processed on virtually all technically important substrates. In this talk, we will discuss active-passive photonic integration on mechanically flexible substrates capitalizing on ChGs’ unique substrate-agnostic integration capacity. In addition, we have also demonstrated a novel glass-on-2D-materials platform enabling facile integration of 2-D materials with a wide variety of integrated photonic devices. Last but not least, we will illustrate that phase change in ChGs further opens up post-fabrication tuning and reconfiguration capabilities for integrated photonic circuits.

Biography:  Juejun (JJ) Hu is currently the Merton C. Flemings Career Development Associate Professor at MIT’s Department of Materials Science and Engineering. His primary research interest is enhanced photonmatter interactions in nanophotonic structures, with an emphasis on on-chip spectroscopy and chemical sensing applications using novel infrared glasses. He holds a Ph.D. degree (2009) from MIT and a B.S. degree (2004) from Tsinghua University, China, both on Materials Science and Engineering. Prior to joining MIT, Hu was an Assistant Professor at the University of Delaware from 2010 to 2014.

Hu has authored and coauthored over 60 refereed journal publications since 2006 and has been awarded 6 U.S. patents. He has been recognized with the National Science Foundation Faculty Early Career Development (CAREER) award, Gerard J. Mangone Young Scholars Award, University of Delaware College of Engineering Outstanding Junior Faculty Member, University of Delaware Excellence in Teaching Award, among others.

Hu is currently the Deputy Editor of the OSA journal Optical Materials Express, and he is a member on technical program committees for conferences including MRS, CLEO, OSA Congress, ACerS GOMD, ICG, and others.