Taylor H F
Appl Opt. 1977 Mar 1;16(3):711-6. doi: 10.1364/AO.16.000711.
An approximate technique based on a sum rule is used to treat mode conversion at corner bends in dielectric waveguides. Matrix elements which describe the mode coupling are expressed as spatial integrals over electromagnetic field distributions for the guided modes. These matrix elements provide information on the magnitude, average propagation constant, and coherence of power propagating in radiation modes. Numerical results are obtained for single mode and multimode slab waveguides, and implications for the design of low-loss interconnections and mode converters for integrated optics are discussed.
一种基于求和规则的近似技术被用于处理介质波导拐角处的模式转换。描述模式耦合的矩阵元被表示为导模电磁场分布的空间积分。这些矩阵元提供了关于辐射模式中传播功率的大小、平均传播常数和相干性的信息。得到了单模和多模平板波导的数值结果，并讨论了其对集成光学低损耗互连和模式转换器设计的意义。
