Boosting the SiN nonlinear photonic platform with transition metal dichalcogenide monolayers

Vincent Pelgrin, Yuchen Wang, Jonathan Peltier, Carlos Alonso-Ramos, Laurent Vivien, Zhipei Sun, Eric Cassan

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In the past few years, we have witnessed increased interest in the use of 2D materials to produce hybrid photonic nonlinear waveguides. Although graphene has attracted most of the attention, other families of 2D materials such as transition metal dichalcogenides have also shown promising nonlinear performance. In this work, we propose a strategy for designing silicon nitride waveguiding structures with embedded MoS2 for nonlinear applications. The transverse geometry of the hybrid waveguide is optimized for high third-order nonlinear effects using optogeometrical engineering and multiple layers of MoS2. Stacking multiple monolayers results in an improvement of two orders of magnitude compared to standard silicon nitride waveguides. The hybrid waveguide performance is then investigated in terms of four-wave mixing enhancement in micro-ring resonator configurations. A signal/idler conversion efficiency of −6.3 dB is reached for a wavelength of around 1.55 µm with a 5 mW pumping level.

Original languageEnglish
Pages (from-to)734-737
Number of pages4
JournalOptics Letters
Issue number4
Publication statusPublished - 15 Feb 2022
MoE publication typeA1 Journal article-refereed


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