Slow-light enhanced optical forces between longitudinally shifted photonic-crystal nanowire waveguides

Details Slow-light enhanced optical forces between longitudinally shifted photonic-crystal nanowire waveguides Slow-light enhanced optical forces between longitudinally shifted photonic-crystal nanowire waveguides

2011-11-02

arxiv.org/abs/1111.0437v1

Physics

Optics

Scientific paper

We reveal that slow-light enhanced optical forces between side-coupled photonic-crystal nanowire waveguides can be flexibly controlled by introducing a relative longitudinal shift. We predict that close to the photonic band-edge, where the group velocity is reduced, the transverse force can be tuned from repulse to attractive, and the force is suppressed for a particular shift value. Additionally the shift leads to symmetry breaking that can facilitate longitudinal forces acting on the waveguides, in contrast to unshifted structures where such forces vanish.

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