Department of Information Science and Electronic Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, Zhejiang 310027, China.
Opt Lett. 2011 Apr 15;36(8):1314-6. doi: 10.1364/OL.36.001314.
Photonic crystal nanobeam microcavities based on slot and hollow-core waveguides were proposed and analyzed. Three-dimensional finite-difference time-domain simulations show that both an ultrasmall modal volume (V) and a high quality (Q) factor can be obtained simultaneously in hollow-core-nanobeam mirocavities (HCNMs) due to the strong confinement of fields in the two lateral directions. For a 6.5-μm-long HCNM, the Q factor and V are on the order of 10⁵ and 10⁻²(λ/2n)³, respectively. With compactness, lower fabrication requirements as well as ultrahigh Q/V, the proposed microcavities would be very promising in a variety of applications.
基于槽和空芯波导的光子晶体纳束微腔被提出并进行了分析。三维有限差分时域模拟显示，由于在两个横向方向上的场的强约束，空芯纳束微腔（HCNM）可以同时获得超小的模式体积（V）和高的品质因数（Q）。对于一个 6.5μm 长的 HCNM，Q 因子和 V 的量级分别为 10⁵和 10⁻²（λ/2n）³。由于其紧凑性、较低的制造要求以及超高的 Q/V，所提出的微腔在各种应用中具有广阔的应用前景。
