Hybrid plasmonic waveguide (HPW) has offered the promise to combine long propagation lengths and strong modal confinement at sub-wavelength scale. All-optical signal processing can be achieved by relying on nonlinear optical interactions such as Kerr nonlinear effect. It is essential to provide sufficient information in order to characterize the nonlinear optical performance of nonlinear HPW (NLHPW). In this study, a figure of merit (FoM) was proposed for the description of the performance of the nonlinear optical waveguide characterized by its material damage threshold, propagation length, nonlinear coefficient, and confinement factor. In this paper, SOI-based and InP-based NLHPW were simulated using finite element method, and they were evaluated with regards to proposed FoM at telecom wavelength of 1550 nm.

中文翻译：

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修改混合等离子体激元的品质因数以得到Kerr非线性效应

混合等离子体激元波导（HPW）提供了在亚波长范围内将长传播长度和强模态限制相结合的承诺。依靠非线性光学相互作用（例如Kerr非线性效应）可以实现全光信号处理。提供足够的信息以表征非线性HPW（NLHPW）的非线性光学性能至关重要。在这项研究中，提出了品质因数（FoM）来描述非线性光波导的性能，其特征在于其材料损伤阈值，传播长度，非线性系数和约束因子。在本文中，使用有限元方法对基于SOI和基于InP的NLHPW进行了仿真，并对它们在1550 nm电信波长下的拟议FoM进行了评估。