论文标题
平面多层波导的复杂耦合模式理论(C-CMT)
Complex Coupled Mode theory (C-CMT) of planar multilayer waveguides
论文作者
论文摘要
金属薄膜光学元件中使用的数值复杂耦合模式方法应用于平面多层光波导。所有模式均需要在光学波导中满足Helmholtz矢量方程,包括向前和向后传播方向的结合和泄漏模式。一阶扰动理论是通过有损材料(包括金属薄膜和边界上完美匹配的层)开发和应用的。我们建议的结构在一个方向上停止,并在核心处产生一个不对称的金属薄膜,用于研究截断两侧的模式匹配理论的传输和反射系数。最后,我们将计算的数值结果与使用有限差求解器方法获得的计算数值结果进行了比较。这项研究提供了CCMT在不对称的时间光谐振器中对当今综合光学技术的需求巨大的优势。
The numerical complex coupled-mode method used in a metal thin-film optic element is applied to a planar multilayer optical waveguide. All modes are required to satisfy Helmholtz Vectorial equation in an optical waveguide including bound and leaky modes at forward and backward propagation directions. First-order perturbation theory is developed and applied by means of lossy materials including metal thin-film and perfectly matched layers at the boundaries. our suggested structure discontinues in one direction and gives rise to an asymmetric metal thin-film at the core for investigating the transmission and reflection coefficient using mode-matching theory in two sides of the truncation. Finally, we compared the computed numerical results with the one that we obtained with the finite difference solver method. This study provides several advantages of CCMT in asymmetric temporal optical resonators that are in huge demand for today's integrated optical technology.