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中文摘要：
利用平面波展开法与时域有限差分法分析计算了一维光子带隙光子晶体腔的特性。得到了品质因子Q为2.2×106,模体积V为0.278（λ/n）3的一维带隙光子晶体腔。分析了渐变区、腔镜子区及缺陷区对腔品质因子Q和模式体积V的影响。引入渐变区、选择适量周期数及一定缺陷区长度都可以提高腔性能。该结论为设计优化一维光子带隙光子晶体腔提供了有效的理论分析依据与指导。
英文摘要：
Abstract Photonic crystal laser cavity with one-dimensional （1D） photonic bandgap is investigated by plane wave expansion method and finite-difference time-domain method. The photonic crystal laser cavity with quality factor Q of 2.2×106 and mode volume V of 0. 278 （λ/n）3 is achieved. The relationships between tapered section, mirror section, defect section, and Q are analyzed. The introduction of tapered section, choosing proper periodic number and suitable defect length can improve the performance of the cavity. These conclusions provide an effective theoretical analysis and guidance on optimization of photonic crystal cavity with 1D photonic bandgap.
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