A study for realizing high-density integrated optical circuits

研究了曲率仅为几μm的硅芯高折射率差（high -Δ）光波导的导光机理。分析了该波导的传播特性，并与传统硅基波导进行了比较。此外，还研究了使用波导的各种功能光学器件，在波导衬底上安装光源（如LD）的方法以及外部光学系统之间的光输入/输出接口。这些成果将成为实现高密度光集成电路的里程碑。

Optical guiding mechanism in high refractive index difference (High-Δ) optical waveguides that have silicon core and that can be bent with the curvature of only several μm were studied. The propagation properties were analyzed and compared with conventional silica based waveguides. Furthermore, various functional optical devices that use the waveguides, the method of mounting light sources such as LD on the waveguide substrates and an optical input/output interface between external optical systems were studied. These achievements will be a milestone for realizing high density optical integrated circuits.