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Hybrid silicon slotted photonic crystal waveguides: how does third order nonlinear performance scale with slow light?

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Abstract

We investigate in this paper the influence of slow light on the balance between the Kerr and two-photon absorption (TPA) processes in silicon slotted hybrid nonlinear waveguides. Three typical silicon photonic waveguide geometries are studied to estimate the influence of the light slow-down factor on the mode field overlap with the silicon region, as well as on the complex effective nonlinear susceptibility. It is found that slotted photonic crystal modes tend to focalize in their hollow core with increasing group index (nG) values. Considering a hybrid integration of nonlinear polymers in such slotted waveguides, a relative decrease of the TPA process by more factor of 2 is predicted from nG  10 to nG  50. As a whole, this work shows that the relative influence of TPA decreases for slotted waveguides operating in the slow light regime, making them a suitable platform for third-order nonlinear optics.

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DOI:10.1364/prj.4.000257

基金项目:Agence Nationale de la Recherche (ANR) (POSISLOT)

收稿日期:2016-07-12

录用日期:2016-09-22

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Junfei Xia:Centre de Nanosciences et de Nanotechnologies, UMR 9001 (CNRS/Université Paris-Sud), Université Paris-Saclay, 91405 Orsay, France
Samuel Serna:Centre de Nanosciences et de Nanotechnologies, UMR 9001 (CNRS/Université Paris-Sud), Université Paris-Saclay, 91405 Orsay, FranceLaboratoire Charles Fabry, Institut d’Optique, CNRS, Université Paris-Sud,2 Avenue Augustin Fresnel, 91127 Palaiseau Cedex, France
Weiwei Zhang:Centre de Nanosciences et de Nanotechnologies, UMR 9001 (CNRS/Université Paris-Sud), Université Paris-Saclay, 91405 Orsay, France
Laurent Vivien:Centre de Nanosciences et de Nanotechnologies, UMR 9001 (CNRS/Université Paris-Sud), Université Paris-Saclay, 91405 Orsay, France
éric Cassan:Centre de Nanosciences et de Nanotechnologies, UMR 9001 (CNRS/Université Paris-Sud), Université Paris-Saclay, 91405 Orsay, France

联系人作者:éric Cassan(eric.cassan@u-psud.fr)

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引用该论文

Junfei Xia, Samuel Serna, Weiwei Zhang, Laurent Vivien, and éric Cassan, "Hybrid silicon slotted photonic crystal waveguides: how does third order nonlinear performance scale with slow light?," Photonics Research 4(6), 257-261 (2016)

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