Enhanced forward stimulated Brillouin scattering in aluminum nitride slot waveguides with acoustic pumping

Linfeng Yu; Ming Cheng; Kang Wang; Junqiang Sun

doi:10.1117/12.2592177

26 January 2021 Enhanced forward stimulated Brillouin scattering in aluminum nitride slot waveguides with acoustic pumping

Linfeng Yu, Ming Cheng, Kang Wang, Junqiang Sun

Author Affiliations +

Proceedings Volume 11767, 2020 International Conference on Optoelectronic Materials and Devices; 1176708 (2021) https://doi.org/10.1117/12.2592177
Event: 2020 International Conference on Optoelectronic Materials and Devices, 2020, Guangzhou, China

Abstract

We propose and design aluminum nitride slot waveguides with acoustic pumping to achieve large forward stimulated Brillouin scattering. The slot structure can constructively add to or destructively interfere with optical forces. The novel arrangement of symmetric electrodes can provide out-of-plane electric fields for piezoelectric materials and excite acoustic waves that satisfying the necessary phase-matching. In this work, the pump photons is intramode scattered into an anti-Stokes sideband by injected phonons. Our aluminum nitride slot waveguide is partly suspended on the silica glass to avoid the leakage of acoustic wave. The height of this waveguide is set to 500 μm and the gap is set to 50 μm. The distance between the electrode and the waveguide is flexible to adjust the piezomechanical coupling strength. Our proposed scheme offers an effective approach to implement acousto-optic interaction in integrated silicon photonics.

Citation Download Citation

Linfeng Yu, Ming Cheng, Kang Wang, and Junqiang Sun "Enhanced forward stimulated Brillouin scattering in aluminum nitride slot waveguides with acoustic pumping", Proc. SPIE 11767, 2020 International Conference on Optoelectronic Materials and Devices, 1176708 (26 January 2021); https://doi.org/10.1117/12.2592177

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