Broadband nonvolatile photonic switching based on optical phase change materials: beyond the classical figure-of-merit

TitleBroadband nonvolatile photonic switching based on optical phase change materials: beyond the classical figure-of-merit
Publication TypeJournal Article
Year of Publication2018
AuthorsZhang, Q, Zhang, Y, Li, J, Soref, R, Gu, T, Hu, J
JournalOptics Letters
Volume43
Issue1
Pagination94 - 97
Date Published2018/01/01/
ISBN Number0146-9592
Keywordsproposal, thin-films
Abstract

In this Letter, we propose a broadband, nonvolatile on-chip switch design in the telecommunication C-band with record low loss and crosstalk. The unprecedented device performance builds on: 1) a new optical phase change material (O-PCM) Ge2Sb2Se4Te1 (GSST), which exhibits significantly reduced optical attenuation compared to traditional O-PCMs, and 2) a nonperturbative design that enables low-loss device operation beyond the classical figure-of- merit (FOM) limit. We further demonstrate that the 1-by-2 and 2-by-2 switches can serve as basic building blocks to construct nonblocking and nonvolatile on-chip switching fabric supporting arbitrary numbers of input and output ports. (C) 2017 Optical Society of America

Short TitleOpt. Lett.