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Slow light in narrow-core hollow optical waveguide with low loss and large bandwidth

机译:低损耗,大带宽的窄芯空心光波导中的慢光

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摘要

A narrow-core hollow waveguide with low loss is proposed that exhibits slow light characteristics. The slow light is guided in air between the top and bottom mirrors, each based on high-index-contrast gratings. The proposed design shows a low propagation loss of 1.8 dB/cm at a 1-mu m-thick narrow air core, and the loss remains low for a broad range of wavelengths from 1200 to 1600 nm. Also, the flat band slow light is realized at a grating period of 0.8 mu m in 1-mu m-thick narrow air core. Further design analysis reveals a large fabrication tolerance of the proposed hollow structure with respect to the grating period. (C) 2016 Optical Society of America
机译:提出了一种具有低损耗的窄芯空心波导,它具有缓慢的光特性。慢光在顶部和底部反射镜之间的空气中引导,每个反射镜均基于高折射率对比光栅。所提出的设计在1μm厚的窄空心处显示出1.8 dB / cm的低传播损耗,并且对于1200至1600 nm的宽波长范围,该损耗仍然很低。另外,在1μm厚的窄空心中,以0.8μm的光栅周期实现了平带慢光。进一步的设计分析表明,提出的空心结构相对于光栅周期具有较大的制造公差。 (C)2016美国眼镜学会

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