A Si₃N₄ - SiO₂ based curve slot optical waveguide is demonstrated comprehensively for guiding and sensing applications. Design parameters are optimized to provide high confinement factor and low mode effective area. Simulations have been performed using two-dimensional full vectorial finite element method based COMSOL multiphysics at 1550 nm wavelength. The curve slot structure of waveguide is compared with conventional structure of horizontal slot waveguide in terms of confinement factor, mode effective area, effective refractive index, chromatic dispersion and waveguide sensitivity. Further, dispersion analysis is performed for different slot widths in large wavelength range. The structure is also examined for biosensing application by measuring the refractive index in the range 1.330 to 1.355. The studied curve slot waveguide provides better waveguide characteristics such as: higher confinement factor in slot region, lower mode effective area, flatter band with lower value of chromatic dispersion and higher waveguide sensitivity.

Si ₃ N ₄ -SiO ₂充分展示了基于λ的曲线缝隙光波导，可用于引导和传感应用。优化设计参数以提供高限制因子和低模式有效面积。使用基于COMSOL多物理场的二维全矢量有限元方法在1550 nm波长下进行了仿真。在限制因子，模式有效面积，有效折射率，色散和波导灵敏度方面，将波导的曲线缝隙结构与水平缝隙波导的常规结构进行了比较。此外，针对大波长范围内的不同缝隙宽度执行色散分析。还可以通过测量1.330至1.355范围内的折射率来检查该结构的生物传感应用。