Abstract
We have investigated the propagation characteristics of anisotropic a-axis hollow lithium niobate nanowire based on a three-layer-dielectric circular waveguide structure by exactly solving Maxwell's equations. The modal characteristics, waveguide dispersion, and nonlinear parameters of the hollow nanowire have been numerically investigated. The numerical results show that the lithium niobate hollow nanowires have some excellent and unique properties, such as the enhanced evanescent field, large dispersion, and high nonlinearity, which are favorable for nonlinear optics applications, such as supercontinuum generation. The results may make inroad toward the miniaturized high-performance linear or nonlinear photonic devices.
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