Design of Three-Dimensional Optical Waveguides Consisting of Composite Materials for Optical Integrated Circuits

光集成电路用复合材料三维光波导设计

基本信息

批准号：
60550270
负责人：
KOSHIBA Masanori
金额：
$ 1.34万
依托单位：
Hokkaido University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1985
资助国家：
日本
起止时间：
1985 至 1986
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-60550270/
关键词：
Optical Integrated Circuit Optical Waveguide Optical Fiber Diode Laser Dielectric Waveguide Finite-Element Method Numerical Analysis 電磁界理論

项目摘要

The purpose of this project is to develop an optimum design system of three-dimensional optical waveguides consisting of composite materials for optical integrated circuits. This system is based on the finite-element method which enables one to compute accurately the mode spectrum of a waveguide composed of inhomogeneous, anisotropic, active, and lossy media.The most serious difficulty in using the finite-element analysis, for inhomogeneous dielectric waveguides, is the appearance of the so-called spurious, nonphysical solutions. To overcome this difficulty, two improved approaches were developed in this project. One is the penalty function method and the other is the method using the transverse magnetic-field component. In the former approach, the divergence-free constraint for the magnetic-field vector is satisfied in the least-square sense and the spurious solutions can be supressed from the guided- or slow-wave region. In the latter approach, the divergence relation is implicitly satisfied and the spurious solutions are completely eliminated in the whole region of a propagation diagram.These new approaches were applied for various optical waveguides. First, stress-applied polarization-maintaining optical fiber and side-tunnel type polarization-maintaining optical fiber were analysed and the modal birefringence characteristics were estimated. Next, anisotropic dielectric waveguides and gyrotropic waveguides were analysed and the dispersion characteristics were investigated. Lastly, buried heterostructure diode lasers were analysed and the modal gain characteristics were evaluated.

该项目的目的是开发一个由三维光学波导的最佳设计系统，该系统由光学整合电路的复合材料组成。该系统基于有限元方法，该方法使一个人能够准确地计算由不均匀，各向异性，活动性和有损媒体组成的波导模式频谱。使用有限元分析的最严重困难，用于无均匀介电性介电引导引导引导。，是所谓的虚假，非物理解决方案的外观。为了克服这一困难，该项目开发了两种改进的方法。一种是惩罚函数方法，另一种是使用横向磁场分量的方法。在前一种方法中，在最小二乘中满足了对磁场矢量的无散射约束，并且可以从引导或慢波区域中添加伪溶液。在后一种方法中，分歧关系被隐式满足，并且在繁殖图的整个区域中完全消除了伪造的解决方案。这些新方法用于各种光学波导。首先，分析了压力施加的极化维护光纤和侧孔型极化光纤，并估计了模态双折射特性。接下来，分析了各向异性电介质波导和旋转波导，并研究了分散特征。最后，分析了埋入的异质结构激光器，并评估了模态增益特征。