Liu Exian, Tan Wei, Yan Bei, Xie Jianlan, Ge Rui, Liu Jianjun
J Opt Soc Am A Opt Image Sci Vis. 2018 Mar 1;35(3):431-436. doi: 10.1364/JOSAA.35.000431.
In this work, an octagonal Penrose-type photonic quasi-crystal fiber (PQF) with dual-cladding is proposed. By optimizing three geometric degrees of freedom, the PQF exhibits ultra-flattened near-zero dispersion of 0.014±0.293 ps/nm/km, ultra-low order confinement loss of 10 dB/km, and large effective mode area of over 16.2 μm in a broadband of wavelength from 1.27 to 1.67 μm, covering almost all optical communication bands. At the common communication wavelength 1.55 μm, completely opposite trends of the dispersion and the confinement loss varying with the air-filling factor in the inner cladding are demonstrated. In addition, the robustness of optical properties including dispersion, confinement loss, and effective mode area in this PQF is discussed, assuming a deviation ±3% of all air holes.
在这项工作中，提出了一种具有双包层的八角形彭罗斯型光子准晶体光纤（PQF）。通过优化三个几何自由度，该PQF在1.27至1.67μm的宽带波长范围内表现出0.014±0.293 ps/nm/km的超平坦近零色散、10 dB/km的超低阶约束损耗以及超过16.2μm的大有效模面积，几乎覆盖了所有光通信波段。在常用通信波长1.55μm处，展示了色散和约束损耗随内包层空气填充因子变化的完全相反趋势。此外，假设所有气孔存在±3%的偏差，讨论了该PQF中包括色散、约束损耗和有效模面积在内的光学特性的稳健性。
