标题: 基于扇形晶格设计具任意角度之光子晶体波导转折
Arbitrary Photonic Crystal Waveguide Bend Based on Sector-Shaped Lattice Cell
作者: 施均融
Chun-Jung Shih
李柏璁
Po-Tsung Lee
显示科技研究所
关键字: 光子晶体;波导;转折;photonic crystal;waveguide;bend
公开日期: 2008
摘要: 光子晶体的研究中, 光在光子晶体波导中经过转折后的能量散失一直是个很大的问题. 许多研究都在想办法改善这个问题. 目前为止已经提出许多的方法来改善波导转折的能量散失, 但是都是在60度或120度这些特别角上面做改善. 在任意角度下波导转折能量散失的研究却不多见.

在这篇论文中, 我们结合了圆形光子晶体跟环型布拉格反射镜的概念做出了可以弯曲任意角度的光子晶体波导, 并且我们调整波导的宽度使波导在通讯的波段上有低损耗且宽频的特性. 也用二维有限时域差分法模拟的方式证明了我们的结构在60度到120度都可以有相同的高传输率频带. 元件也可以成功的被制造出来. 我们也用间接与直接的方法去量测我们的元件.
In the research of photonic crystal, photonic crystal waveguide bending loss is always a big problem. There are many studies to improve it. Lots of methods are proposed to improve the bending loss, but usually in special angle like 60° or 120°. The research of arbitrary waveguide bending loss is rarity.

In the thesis, we combine the concepts of circular photonic crystal and annular bragg reflector to design a arbitrary waveguide bend, and optimizing the waveguide width achieve low loss and with broad bandwidth at communication wavelength. We also using 2D FDTD simulate our structure in possession of the same high transmission band at 60°~120°. The device has fabricated, and measures it by direct and indirect method.
URI: http://140.113.39.130/cdrfb3/record/nctu/#GT009515535
http://hdl.handle.net/11536/38645
显示于类别:Thesis


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