Reshaping light: reconfigurable photonics enabled by broadband low-loss optical phase change materials
Author(s)Zhang, Yifei; Chou, Jeffrey B.; Shalaginov, Mikhail; Ríos, Carlos; Roberts, Christopher; Robinson, Paul; Bohlin, Bridget; Du, Qingyang; Zhang, Qihang; Li, Junying; Kang, Myungkoo; Gonçalves, Claudia; Richardson, Kathleen; Gu, Tian; Liberman, Vladimir; Hu, Juejun; ... Show more Show less
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Optical phase change materials (O-PCMs) are a unique class of materials which exhibit extraordinarily large optical property change (e.g. refractive index change > 1) when undergoing a solid-state phase transition. Traditional O-PCMs suffer from large optical losses even in their dielectric states, which fundamentally limits the performance of optical devices based on the materials. To resolve the issue, we have recently demonstrated a new O-PCM Ge-Sb-Se-Te (GSST) with broadband low loss characteristics. In this talk, we will review an array of reconfigurable photonic devices enabled by the low-loss O-PCM, including nonvolatile waveguide switches with unprecedented low-loss and high-contrast performance, free-space light modulators, bi-stable reconfigurable metasurfaces, and transient couplers facilitating waferscale device probing and characterizations.
DepartmentMassachusetts Institute of Technology. Department of Materials Science and Engineering; Lincoln Laboratory
Proceedings of SPIE - The International Society for Optical Engineering
SPIE-Intl Soc Optical Eng
Zhang, Yifei et al. "Reshaping light: Reconfigurable photonics enabled by broadband low-loss optical phase change materials." Proceedings of SPIE - The International Society for Optical Engineering, May 2019, Baltimore, Maryland, SPIE-Intl Soc Optical Eng, 2019, DOI: 10.1117/12.2513385 © 2019 SPIE.
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