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Ultra-flat dispersion in an integrated waveguide with five and six zero-dispersion wavelengths for mid-infrared photonics
Photonics Research ( IF 7.6 ) Pub Date : 2019-10-30 , DOI: 10.1364/prj.7.001279
Yuhao Guo , Zeinab Jafari , Lijuan Xu , Changjing Bao , Peicheng Liao , Guifang Li , Anuradha M. Agarwal , Lionel C. Kimerling , Jurgen Michel , Alan E. Willner , Lin Zhang

We propose a new type of dispersion flattening technology, which can generate an ultra-flat group velocity dispersion profile with five and six zero-dispersion wavelengths (ZDWs). The dispersion value varies from −0.15 to 0.35 ps/(nm·km) from 4 to 8 μm, which to the best of our knowledge is the flattest one reported so far, and the dispersion flatness is improved by more than an order of magnitude. We explain the principle of producing six ZDWs. Mode distribution in this waveguide is made stable over a wide bandwidth. General guidelines to systematically control the dispersion value, sign, and slope are provided, and one can achieve the desired dispersion by properly adjusting the structural parameters. Fabrication tolerance of this waveguide is also examined.

中文翻译:

具有五个和六个零色散波长的集成波导中的超平坦色散用于中红外光子学

我们提出了一种新型色散平坦化技术,该技术可以生成具有五个和六个零色散波长 (ZDW) 的超平坦群速度色散曲线。色散值从-0.15到0.35 ps/(nm·km)从4到8 μm变化,据我们所知,这是迄今为止报道的最平坦的,色散平坦度提高了一个数量级以上. 我们解释了产生六个 ZDW 的原理。该波导中的模式分布在很宽的带宽内保持稳定。提供了系统地控制色散值、符号和斜率的一般指南,可以通过适当调整结构参数来实现所需的色散。还检查了该波导的制造公差。
更新日期:2019-10-30
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