17 February 2009 Optical characteristics of V-groove waveguide structures
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Abstract
We propose the V-groove waveguide as a novel silicon nanophotonic structure. By anisotropic etching of a monocrystalline silicon layer, angled photonic wires with isosceles-trapezoidal cross section can be realized. Placing two such wires side by side results in a waveguiding structure consisting of two highly coupled wires separated by an acute angled V-shaped nano groove. By choosing proper geometry parameters, the light is concentrated near the bottom of the groove. In this work, we theoretically study the dependence of the light confinement characteristics on the waveguide geometry parameters and demonstrate the suitability of the Vgroove waveguide as a versatile platform for surface sensing, for exploiting nonlinear optical effects in low index materials, and for realizing nanowire lasers.
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Paul Müllner, Rainer Hainberger, "Optical characteristics of V-groove waveguide structures", Proc. SPIE 7220, Silicon Photonics IV, 722004 (17 February 2009); doi: 10.1117/12.809042; https://doi.org/10.1117/12.809042
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