Record Low Loss Hollow Core Fiber for the 1μm Region
Record Low Loss Hollow Core Fiber for the 1μm Region
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1μm 区域低损耗空心光纤记录
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
F. Poletti
中科院分区：
文献类型：
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作者：
H. Sakr;G. Jasion;T. Bradley;Y. Chen;J. Hayes;I. Davidson;H. C. Mulvad;L. Xu;D. Richardson;F. Poletti
空心芯（HC）抗谐振光纤（arf）具有低光学损耗、低玻璃模重叠和宽传输带宽的潜力，可以覆盖从紫外到中红外的区域，并且可以优化工作在1μm和1.55μm波段[1,2]。arf的光学性质主要取决于核心周围膜的排列和厚度。迄今为止，Maurel等人在Kagome光纤中报道了1μm导向HCF的最先进光损耗，在Nd-Yb:YAG激光波长下显示为8.5dB/km。Wheeler等人也报道了1μm区域的其他低损耗结果。在Kagome HCF中，1010nm处的损耗为12.3dB/km；Chen et al.[5]在37 cell光子带隙光纤（PBGF）中在1047nm处显示12.3dB/km；和Debord等人的研究表明，在管状晶格HCF中，800-1200nm区域的损耗为8-20dB /km。在已知的“管状”空心核心arf中添加更小的嵌套管可以大大降低其光损耗，原则上允许hc嵌套抗谐振无节点光纤（NANF）实现低于传统固体光纤的总损耗值[7]。最近的NANF结果显示，1450nm处的损耗为1.3dB/km （Bradley et al.[8]）。
Hollow core (HC) antiresonant fibers (ARFs) offer potential for low optical loss, low glass-mode overlap, and wide transmission bandwidth that could cover regions from the UV to the Mid-IR, and be optimized to work in the 1μm and 1.55μm bands [1,2]. The optical properties of ARFs depend mainly on the arrangement and thickness of the core surrounding membranes. To date, the state-of-the-art optical loss in a 1μm-guiding HCF is reported by Maurel et al. [3] in a Kagome fiber, showing 8.5dB/km at the Nd-Yb:YAG laser wavelengths. Other low loss results at the 1μm region have been reported by Wheeler et al. [4] showing 12.3dB/km at 1010nm in a Kagome HCF; Chen et al. [5] showing 12.3dB/km at 1047nm in a 37-cell photonic bandgap fiber (PBGF); and Debord et al. [6] showing a loss of 8–20dB/km in the 800–1200nm region in tubular lattice HCF. The addition of smaller nested tubes to the known ‘tubular’ hollow core ARFs can considerably reduce their optical loss, allowing in principle a HC-Nested Antiresonant Nodeless Fiber (NANF) to achieve total loss values lower than conventional solid fibers [7]. Recent NANF results showed loss of 1.3dB/km at 1450nm (Bradley et al. [8]).