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Reshaping light: reconfigurable photonics enabled by broadband low-loss optical phase change materials
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Paper Abstract

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.

Paper Details

Date Published: 13 May 2019
PDF: 8 pages
Proc. SPIE 10982, Micro- and Nanotechnology Sensors, Systems, and Applications XI, 109820Q (13 May 2019); doi: 10.1117/12.2513385
Show Author Affiliations
Yifei Zhang, Massachusetts Institute of Technology (United States)
Jeffrey B. Chou, MIT Lincoln Lab. (United States)
Mikhail Shalaginov, Massachusetts Institute of Technology (United States)
Carlos Rios, Massachusetts Institute of Technology (United States)
Christopher Roberts, MIT Lincoln Lab. (United States)
Paul Robinson, MIT Lincoln Lab. (United States)
Bridget Bohlin, MIT Lincoln Lab. (United States)
Qingyang Du, Massachusetts Institute of Technology (United States)
Qihang Zhang, Massachusetts Institute of Technology (United States)
Junying Li, Massachusetts Institute of Technology (United States)
Myungkoo Kang, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Claudia Gonçalves, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Kathleen Richardson, CREOL, The College of Optics and Photonics, Univ. of Central Florida (United States)
Tian Gu, Massachusetts Institute of Technology (United States)
Vladimir Liberman, MIT Lincoln Lab. (United States)
Juejun Hu, Massachusetts Institute of Technology (United States)


Published in SPIE Proceedings Vol. 10982:
Micro- and Nanotechnology Sensors, Systems, and Applications XI
Thomas George; M. Saif Islam, Editor(s)

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