Low loss and broadband low back-reflection interconnection between a hollow-core and standard single-mode fiber.
Low loss and broadband low back-reflection interconnection between a hollow-core and standard single-mode fiber.
复制标题
空心光纤和标准单模光纤之间的低损耗和宽带低背反射互连。
作者：
D. Suslov;E. N. Numkam Fokoua;D. Dousek;Ailing Zhong;S. Zvánovec;T. Bradley;F. Poletti;D. Richardson;M. Komanec;R. Slavík
我们报道了中空纤芯光纤与标准单模光纤之间的低耦合损耗(在1550 nm处小于0.2 分贝)和低背向反射(在1200-1600 nm范围内小于-60 分贝)。我们进行了界面角度的实验优化，以实现耦合损耗和背向反射抑制方面的最佳性能组合。此外，我们还研究了寄生交叉耦合对高阶模式的影响，结果表明，与平坦界面的情况相比，寄生交叉耦合并没有降低，对于LP11和LP02模，它分别保持在-30 分贝和-20 分贝以下。
We report simultaneous low coupling loss (below 0.2 dB at 1550 nm) and low back-reflection (below -60 dB in the 1200-1600 nm range) between a hollow core fiber and standard single mode optical fiber obtained through the combination of an angled interface and an anti-reflective coating. We perform experimental optimization of the interface angle to achieve the best combination of performance in terms of the coupling loss and back-reflection suppression. Furthermore, we examine parasitic cross-coupling to the higher-order modes and show that it does not degrade compared to the case of a flat interface, keeping it below -30 dB and below -20 dB for LP11 and LP02 modes, respectively.