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首页> 外文会议>Conference on Applied Optics and Photonics China >Fiber Up-Tapering and Down-Tapering for Low-Loss Coupling Between Anti-Resonant Hollow-Core Fiber and Solid-Core Fiber
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Fiber Up-Tapering and Down-Tapering for Low-Loss Coupling Between Anti-Resonant Hollow-Core Fiber and Solid-Core Fiber

机译：光纤上锥度和下锥度，以实现抗谐振空心芯光纤和实芯芯光纤之间的低损耗耦合

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摘要

In this paper, we demonstrate a novel method for the low-loss coupling between solid-core multi-mode fibers (MMFs) and anti-resonant hollow-core fibers (AR-HCFs). The core/cladding diameter of the MMF is 50/125μm and the mode field diameter of the AR-HCFs are 33.3μm and 71.2μm of the ice-cream type AR-HCFs and the non-node type AR-HCFs, respectively. In order to match the mode field diameters of these two specific AR-HCFs, the mode field diameter of the MMFs is increased or decreased by up-tapering or down-tapering the MMFs. Then, according to the principle of coupled fiber mode matching, the optimal diameter of tapered fiber for low-loss coupling is calculated. Based on beam propagation method, the calculated coupling losses without tapering process are 0.31dB and 0.89dB, respectively for a MMF-HCF-MMF structure of the ice-cream type AR-HCFs and the non-node type AR-HCFs. These values can be reduced to 0.096dB and 0.047dB when the outer diameters of the MMF are down-tapered to 116μm and up-tapered to 269μm, respectively. What's more, these results can also be verified by existing experiments.
机译：在本文中，我们演示了一种用于实心多模光纤（MMF）与反谐振空心光纤（AR-HCF）之间的低损耗耦合的新方法。 MMF的芯/包层直径为50 /125μm，AR-HCF的模场直径分别为冰淇淋型AR-HCF和非节点型AR-HCF的33.3μm和71.2μm。为了匹配这两个特定的AR-HCF的模场直径，通过向上或向下渐缩MMF来增加或减小MMF的模场直径。然后，根据耦合光纤模式匹配的原理，计算出用于低损耗耦合的锥形光纤的最佳直径。基于光束传播方法，对于冰淇淋型AR-HCF和非节点型AR-HCF，MMF-HCF-MMF结构的无锥度计算的耦合损耗分别为0.31dB和0.89dB。当MMF的外径分别减小到116μm和增大到269μm时，这些值可以减小到0.096dB和0.047dB。而且，这些结果也可以通过现有实验进行验证。

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