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arXiv 1606.06241physics.optics
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单模单偏振薄膜波导光子学

Single-mode and single-polarization photonics with anchored-membrane waveguides

Jeff Chiles, Sasan Fathpour

摘要:

提出了一种集成光子平台--T型波导,并对其进行了数值研究。这些紧凑的空气包覆结构具有高折射率对比度,并且比现有的膜型结构稳定得多。它们的半无限几何结构使单模和单极化(SMSP)操作在前所未有的带宽。模态模拟量化了这种行为,表明2.75倍频程(1.2 - 8.1 μm)的SMSP窗口对于硅T型波导是可行的,几乎跨越了硅的整个透明度范围。T-Guides的色散工程产生了广泛的异常群速度色散区域,使其成为宽带频率转换等非线性应用的有前途的平台。

英文摘要:

An integrated photonic platform with anchored-membrane structures, the T-Guide, is proposed and numerically investigated. These compact air-clad structures have high index contrast and are much more stable than prior membrane-type structures. Their semi-infinite geometry enables single-mode and single-polarization (SMSP) operation over unprecedented bandwidths. Modal simulations quantify this behavior, showing that an SMSP window of 2.75 octaves (1.2 - 8.1 μm) is feasible for silicon T-Guides, spanning almost the entire transparency range of silicon. Dispersion engineering for T-Guides yields broad regions of anomalous group velocity dispersion, rendering them a promising platform for nonlinear applications, such as wideband frequency conversion.

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