论文标题
用嵌套的椭圆形抗溶剂管的超低损失空心的负曲率纤维
Ultralow loss hollow-core negative curvature fibers with nested elliptical antiresonance tubes
论文作者
论文摘要
空心的负曲率纤维可以将光线限制在空气核心内，并且具有较小的非线性和分散性和高伤害阈值，从而在空心核心纤维领域引起了极大的兴趣。但是，减少空心核负曲率纤维的损失是一个严重的问题。在此基础上，在近红外光谱区域提出了三种具有不同嵌套管结构的新型纤维，并将其与先前提出的空心核负曲率纤维进行了比较。我们使用有限元的方法进行数值模拟研究，以研究其传输损失，弯曲损失和单模性能，然后比较各种结构纤维的传输性能。我们发现，嵌套的椭圆形抗弹纤维1具有比0.72-1.6μm光谱范围内的其他三种纤维中的传输性能更好。结果表明，LP01模式的传输损失在λ=1.06μm时低至6.45*10-6 dB/km。据我们所知，创建了带有嵌套管结构的空心抗抗抗氧纤维的创纪录的低水平传输损失。此外，嵌套的椭圆形抗弹纤维1具有更好的弯曲电阻，其弯曲损失在5 cm弯曲半径下低于2.99*10-2 dB/km。
Hollow-core negative curvature fibers can confine light within air core and have small nonlinearity and dispersion and high damage threshold, thereby attracting a great deal of interest in the field of hollow core fibers. However, reducing the loss of hollow-core negative curvature fibers is a serious problem. On this basis, three new types of fibers with different nested tube structures are proposed in the near-infrared spectral regions and compared in detail with a previously proposed hollow-core negative curvature fiber. We used finite-element method for numerical simulation studies of their transmission loss, bending loss, and single-mode performance, and then the transmission performance of various structural fibers is compared. We found that the nested elliptical antiresonant fiber 1 has better transmission performance than that of the three other types of fibers in the spectral range of 0.72-1.6 μm. Results show that the transmission loss of the LP01 mode is as low as 6.45*10-6 dB/km at λ = 1.06 μm. To the best of our knowledge, the record low level of transmission loss of hollow-core antiresonant fibers with nested tube structures was created. In addition, the nested elliptical antiresonant fiber 1 has better bending resistance, and its bending loss was below 2.99*10-2 dB/km at 5 cm bending radius.
