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首页> 外文期刊>Optics Letters >Light-propagation characteristics of Y-branch defect waveguides in AlGaAs-based air-bridge-type two-dimensional photonic crystal slabs
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Light-propagation characteristics of Y-branch defect waveguides in AlGaAs-based air-bridge-type two-dimensional photonic crystal slabs

机译：AlGaAs基气桥型二维光子晶体平板中Y分支缺陷波导的光传播特性

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摘要

Y-branch defect waveguides (DWGs) in an AlGaAs-based air-bridge-type two-dimensional (2D) photonic crystal (PC) slab were fabricated, and the resulting optical transmission spectra were measured. Optical beam propagation along the waveguide was successfully observed in vidicon IR images. The measured transmission spectra at the two output ports in the Y-branch DWG were remarkably similar in shape and magnitude. From comparison between the measured and calculated transmission spectra, the observed optical beam was identified as the guided mode based on the Y-branch DWG in the 2D PC slab. The results suggest that the Y-branch DWG used in the experiment has the potential to function as an ultrasmall 3-dB beam splitter with good performance. (C) 2002 Optical Society of America. [References: 12]
机译：制作了基于AlGaAs的气桥型二维（2D）光子晶体（PC）平板中的Y分支缺陷波导（DWG），并测量了所得的光透射光谱。在视频IR图像中成功观察到沿波导的光束传播。 Y分支DWG中两个输出端口的测量透射光谱在形状和大小上都非常相似。通过比较测量的和计算的透射光谱，可以将观察到的光束基于2D PC平板中的Y分支DWG识别为引导模式。结果表明，实验中使用的Y分支DWG具有用作具有良好性能的超小型3dB分束器的潜力。 （C）2002年美国眼镜学会。 [参考：12]

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