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Design of highly nonlinear photonic crystal fibers with flattened chromatic dispersion

机译:具有平坦色散的高度非线性光子晶体光纤的设计

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摘要

A novel (to our knowledge) type of photonic crystal fiber (PCF) with high nonlinearity and flattened dispersion is proposed. The propagation characteristics of chromatic dispersion, effective area, and nonlinearity are studied numerically by using the full-vector finite element method. Several PCF designs with high nonlinearity and nearly zero flattened dispersion or broadband flattened, and even ultraflattened, dispersion over different wavelength bands are obtained by optimizing the structural parameters. One optimized PCF has a nearly zero ultraflattened dispersion of 2.3 ps/(nm · km) with a dispersion variation of 0.2 ps/(nm · km) over the C + L + U wavelength bands. In addition, the dispersion slope and nonlinear coefficient at 1.55 μm can be up to 2.2 × 10~(-3) psm~2 · km and 33.2 W~(-1) · km~(-1), respectively. The designs proposed in this paper have bright prospects for applications in all-optical format conversion, supercontinuum generation, optical wavelength conversion, and many other fields.
机译:提出了一种新型的(据我们所知)具有高非线性度和平坦色散的光子晶体光纤(PCF)。利用全矢量有限元方法对色散,有效面积和非线性的传播特性进行了数值研究。通过优化结构参数,可以获得几种具有高非线性度和接近零展平的色散或宽带展平,甚至超展平的色散的PCF设计。一种优化的PCF在C + L + U波段上具有2.3 ps /(nm·km)的接近零的超平坦色散,色散变化为0.2 ps /(nm·km)。此外,在1.55μm处的色散斜率和非线性系数分别可以达到2.2×10〜(-3)ps / nm〜2·km和33.2 W〜(-1)·km〜(-1)。本文提出的设计在全光格式转换,超连续谱产生,光波长转换以及许多其他领域中的应用具有广阔的前景。

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