Abstract In this letter, two novel hollow-core photonic crystal fibers (PCFs) are proposed, simulated, and analyzed. The PCFs stably support Orbital Angular Momentum (OAM) transmission. These PCFs are theoretically and systematically investigated, discussed, and compared their properties, structures, and parameters. Besides, an effect of core size and pattern of air holes on OAM parameters is investigated with these two PCFs. The proposed PCFs support up to 38 OAM states with 1,200 nm bandwidth ranging from 800 nm to 2,000 nm with a large effective refractive index difference of above 1 0 − 4 . The average confinement losses of these PCFs less than 1 0 − 7 dB/m, and the lowest dispersion variations are 3.7980 ps/nm/km and 4.7489 ps/nm/km. In addition, a low nonlinearity, flatten dispersion variation are obtained for these PCFs. Moreover, this type of optical fiber would be a strong candidate for stable transmissions, high capacity of optical fiber communications, and OAM sensing applications.

中文翻译：

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光传输中支持轨道角动量态的光子晶体光纤的设计与性能评估

摘要 在这封信中，提出、模拟和分析了两种新型空芯光子晶体光纤 (PCF)。PCF 稳定支持轨道角动量 (OAM) 传输。从理论上和系统地研究、讨论和比较了这些 PCFs 的特性、结构和参数。此外，使用这两种 PCF 研究了纤芯尺寸和气孔模式对 OAM 参数的影响。所提出的 PCF 支持多达 38 个 OAM 状态，具有 1,200 nm 带宽，范围从 800 nm 到 2,000 nm，有效折射率差异大于 1 0 - 4。这些 PCF 的平均限制损耗小于 1 0 − 7 dB/m，最低色散变化为 3.7980 ps/nm/km 和 4.7489 ps/nm/km。此外，这些 PCF 还获得了低非线性、平坦的色散变化。而且，