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中文摘要：
设计了基于宽度抛物线型和孔径渐变的一维（1-D）光子晶体（PhC）纳米梁腔.通过FDTD的计算模拟,设计的这种纳米梁腔可以实现超高Q值1.8×10~7,同时拥有超小模体积V～0.04（λ/n）~3,在继承抛物线型和渐变孔径型纳米梁腔高Q的基础上,进一步降低了模体积V.我们设计的这种腔具有紧凑,低制造工艺要求以及高Q/V值等优点,在未来应有广泛应用.
英文摘要：
One-dimensional （l-D） photonic crystal （PhC） nanobeam cavity based on parabolic-shaped width and tapered holes was proposed and analyzed. Finite-difference time-domain simulations show that both an ultrasmall modal volume （V - 0.04（λ/n）3） and ultrahigh quality factor （Q -1.8 x 10^7） can be obtained in PT PhC nanobeam cavity. In addition, the PT PhC nanobeam have one order lower V comparing to parabolic and tapered nanobeam. With compactness, lower fabrication requirements to achieve ultrahigh Q/V, the proposed nanobeam could be versatile platforms of interest for optical communications, optomechanics, cavity QED, etc.
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