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Proceedings Paper

Optical forces in a silicon nano-optomechanical device based on a cross-slot waveguide
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Paper Abstract

In a conventional slot waveguide structure, light is strongly confined in the slot region only either for the Quasi-TE (in a vertically oriented slot) or for the Quasi-TM (in a horizontally oriented slot) fundamental eigenmode, which enhances the optical forces, thus decreasing the optical power necessary to control the displacement of the device, but only for one eigenmode polarization at a time. In this work, we analyzed the optical forces in a cross-slot waveguide, which is formed by four suspended silicon waveguides separated by two orthogonal air slots. Cross-slot waveguides can strongly confine light in both Quasi-TE and Quasi-TM polarizations, thus enhancing the optical force and reducing the optical power for both. Our simulation results show that, by adjusting the optical power and the light polarization, it is possible to control the displacement of the waveguides in the vertical or in the horizontal direction almost individually, or in both directions simultaneously. The proposed NOMS device offers potential applications in active photonic devices, novel nanosensing and nanoactuators mechanisms, such as optical nanotweezers.

Paper Details

Date Published: 13 May 2016
PDF: 8 pages
Proc. SPIE 9891, Silicon Photonics and Photonic Integrated Circuits V, 98910K (13 May 2016); doi: 10.1117/12.2227175
Show Author Affiliations
Janderson Rocha Rodrigues, Instituto Tecnológico de Aeronáutica (Brazil)
Instituto de Estudos Avançados (Brazil)
Vilson Rosa Almeida, Instituto Tecnológico de Aeronáutica (Brazil)
Instituto de Estudos Avançados (Brazil)


Published in SPIE Proceedings Vol. 9891:
Silicon Photonics and Photonic Integrated Circuits V
Laurent Vivien; Lorenzo Pavesi; Stefano Pelli, Editor(s)

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