Embedded cavities and waveguides in three-dimensional silicon photonic crystals
Embedded cavities and waveguides in three-dimensional silicon photonic crystals
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DOI：
10.1038/nphoton.2007.252
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发表时间：
2008-01-01
期刊：
影响因子：
35
通讯作者：
Braun, Paul V.
中科院分区：
文献类型：
--
作者：
Rinne, Stephanie A.;Garcia-Santamaria, Florencio;Braun, Paul V.
为了实现完全光子带隙材料在光电子学应用中的承诺，必须实现三维工程缺陷的结合。由于制造挑战，先前创建和表征此类缺陷的尝试受到限制。在这里，我们报告的光学和结构表征的复杂亚微米功能前所未有的质量内硅反蛋白石。首先通过双光子聚合在二氧化硅胶体晶体内形成高分辨率三维特征，然后通过高折射率复制步骤和去除蛋白石模板以产生三维硅光子晶体中的嵌入缺陷。我们演示了带隙频率的耦合，在平面光学腔和近红外光的第一波波导周围的急弯在一个完整的光子带隙材料的谐振模式。
To fulfil the promise that complete-photonic-bandgap materials hold for optoelectronics applications, the incorporation of three-dimensionally engineered defects must be realized. Previous attempts to create and characterize such defects were limited because of fabrication challenges. Here we report the optical and structural characterization of complex submicrometre features of unprecedented quality within silicon inverse opals. High-resolution three-dimensional features are first formed within a silica colloidal crystal by means of two-photon polymerization, followed by a high-index replication step and removal of the opal template to yield embedded defects in three-dimensional silicon photonic crystals. We demonstrate the coupling of bandgap frequencies to resonant modes in planar optical cavities and the first waveguiding of near-infrared light around sharp bends in a complete-photonic-bandgap material.