摘要
二维平板光子晶体微腔在垂直于平板方向上存在辐射损耗,使得微腔品质因数不够大,限制了其应用。结合光子晶体微腔损耗的傅里叶分析,采用调整腔模空间分布的方法,减少了波矢在辐射泄漏区域的分布,进而降低了腔损耗,实现了微腔品质因数的优化。针对L3型二维光晶体微腔的结构设计,对具体的L3型光子晶体微腔优化进行了数值仿真,仿真结果表明微腔品质因数得到了极大的提高,验证了光子晶体微腔品质因数优化方法的有效性。
Two-dimension photonic crystal slab micro-cavity exist radiation loss in the vertical direction, which decreases the quality factor and restricts its application. According to the Fourier analysis of photonic crystal slab micro-cavity loss this paper adopts the method of modulating cavity mode profile, which reduces the distribution of wave vector in radiation lead area, decreases the cavity loss, and realizes the optimization of cavity quality factor. Facing to the structure design of two-dimension photonic crystal slab L3 micro-cavity, this paper gives a numerical simulation to photonic crystal slab L3 micro-cavity. The simulation results show a great improvement of cavity quality factor, and validate effectiveness of the optimization method for photonic crystal micro-cavity quality factor in this paper.
出处
《光电工程》
CAS
CSCD
北大核心
2012年第8期146-150,共5页
Opto-Electronic Engineering
