本篇論文的研究重點是在於利用環形的光子晶體(Photonic Crystal)中空波導來實現慢光(Slow Light)的效應，在透過柱座標有限時域差分法(R-FDTD)的模擬計算後，我們分析了環形光子晶體中空波導結構特性與慢光的影響，再經過缺陷結構對慢光的分析，群折射率(Group Index)最高可達133。 In this work, we dealt with the slow light effect in torus photonic crystal hollow waveguides. We study the characteristics of slow light by employing the radial finite-difference time-domain (R-FDTD) simulation. The highest group index of 133 is obtained in the structure with additional defect.
