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In this paper, we review the key performance of optical modulators operating in the wavelength range of 1.3–1.5 μm for fiber-optic link applications and compare the design of two nanoscale modulators which are based upon (a) second-harmonic generation (SHG) from GaN nanopillars and (b) electrooptic polymer in nanoslot waveguides, respectively.
Second-harmonic generation (SHG) from single GaN nanpoillar is reported. A model for the SHG processes in the GaN nanopillar as a function of diameter is presented; the analysis showed quantitatively that the SHG is dominated by its surface area. The effective second order nonlinear optical susceptibility increases as the diameter of the GaN nanopillar decreases, reaching a value of 136 pm/V at 150nm...
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