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

Janderson Rocha Rodrigues; Vilson Rosa Almeida

doi:10.1117/12.2227175

13 May 2016 Optical forces in a silicon nano-optomechanical device based on a cross-slot waveguide

Janderson Rocha Rodrigues, Vilson Rosa Almeida

Proceedings Volume 9891, Silicon Photonics and Photonic Integrated Circuits V; 98910K (2016) https://doi.org/10.1117/12.2227175
Event: SPIE Photonics Europe, 2016, Brussels, Belgium

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.

Citation Download Citation

Janderson Rocha Rodrigues and Vilson Rosa Almeida "Optical forces in a silicon nano-optomechanical device based on a cross-slot waveguide", Proc. SPIE 9891, Silicon Photonics and Photonic Integrated Circuits V, 98910K (13 May 2016); https://doi.org/10.1117/12.2227175

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