Dielectric waveguides with embedded graphene nanoribbons for all-optical broadband modulation

Karimi, F.; Knezevic, I.

doi:10.1364/OME.9.004456

Title: Dielectric waveguides with embedded graphene nanoribbons for all-optical broadband modulation

Journal Article · Mon Oct 28 00:00:00 EDT 2019 · Optical Materials Express

DOI:https://doi.org/10.1364/OME.9.004456· OSTI ID:1572123

Karimi, F.;

All-optical processing offers low power consumption and fast operation speed and is a promising approach to high-bit-rate communication. Realization of all-optical integrated photonics requires core materials that strongly mediate photon–photon interaction. Recently, it was shown that, in the long-wavelength limit, graphene nanoribbons (GNRs) have a very strong Kerr optical nonlinearity in the telecom wavelength range (1.3-1.6 µm). We propose a dielectric waveguide with embedded GNRs for all-optical self-amplitude-modulation applications. By implanting a van der Waals (vdW) heterostructure consisting of GNRs and hexagonal boron nitride into a rib silicon waveguide, we maximize the optical concentration near the GNRs and enhance nonlinear optical effects. Different-width GNRs incorporated in the vdW heterostructure provide strong self-sustaining broadband modulation over the telecom frequency range, without a need for dynamical tuning. The compact footprint and self-sustaining, broad-bandwidth saturable absorption make the proposed device a suitable component for ultrafast nanophotonic applications.

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Research Organization:: Univ. of Wisconsin, Madison, WI (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0008712

OSTI ID:: 1572123

Alternate ID(s):: OSTI ID: 1801878

Journal Information:: Optical Materials Express, Journal Name: Optical Materials Express Vol. 9 Journal Issue: 11; ISSN 2159-3930

Publisher:: Optical Society of AmericaCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 1 work

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