Abstract

The Fresnel reflection of a splice from the air–silica interface between a hollow-core fiber (HCF) and a solid-core conventional fiber will increase the splicing loss and also cause possible instability of transmission. Here, for the first time, we develop a novel approach to fusion splicing an antireflection-coated (AR-coated) conventional fiber and an antiresonant HCF, which was generally claimed to be impossible because of the heat-induced damage of the coating, and achieve state-of-the-art ultralow fusion splicing loss less than 0.3 dB and a low return loss less than −28 dB by optimizing the splicing procedures and parameters. Our new fusion splicing approach will benefit the wide application of HCFs in telecoms, laser technologies, gyroscopes, and fiber gas cells.

© 2023 Optica Publishing Group

Ultralow-loss fusion splicing between negative curvature hollow-core fibers and conventional SMFs with a reverse-tapering method

Caoyuan Wang, Ruowei Yu, Benoît Debord, Frédéric Gérôme, Fetah Benabid, Kin Seng Chiang, and Limin Xiao
Opt. Express 29(14) 22470-22478 (2021)

Low-loss fusion splicing between spacing-mismatched multicore fibers

Wei Ji, Ruowei Yu, Zihao Shen, Caoyuan Wang, Cong Xiong, and Limin Xiao
Opt. Lett. 46(24) 6112-6115 (2021)

Low-loss single-mode guidance in large-core antiresonant hollow-core fibers

Alexander Hartung, Jens Kobelke, Anka Schwuchow, Jörg Bierlich, Jürgen Popp, Markus A. Schmidt, and Torsten Frosch
Opt. Lett. 40(14) 3432-3435 (2015)

High extinction ratio and low backreflection polarization maintaining hollow-core to solid-core fiber interconnection

Zhe Zhang, YiFeng Hong, YuLin Sheng, AnQing Jia, XueQian Liu, ShouFei Gao, Wei Ding, and YingYing Wang
Opt. Lett. 47(13) 3199-3202 (2022)

Multi-nested antiresonant hollow-core fiber with ultralow loss and single-mode guidance

Yuxi Wang and Wonkeun Chang
Opt. Express 31(11) 18250-18264 (2023)