Abstract
We report on the design, fabrication, and characterization of a low-loss birefringent semi-tube anti-resonant hollow-core fiber (AR-HCF). By optimizing the structure design and the stack-and-draw fabrication technique, a transmission loss of 4.8 dB/km at 1522 nm, a <10 dB/km bandwidth of 154 nm, and a phase birefringence of 1.8 × 10−5 are demonstrated. This achieved loss is more than one order of magnitude lower than the previously reported birefringent AR-HCF and the bandwidth is one order of magnitude broader than the reported birefringent photonic bandgap hollow-core fiber (PBG-HCF) with the same loss level. The polarization extinction ratio (PER) reaches the ∼20 dB level in a 90 m-long fiber under >25 cm bending radius. Combined with the single mode and low dispersion features, the developed semi-tube AR-HCF may find a variety of applications in frequency metrology, interferometric fiber gyroscopes, and long-baseline stellar interferometry.
Funder
National Natural Science Foundation of China
Basic and Applied Basic Research Foundation of Guangdong Province
Guangzhou Science and Technology Program
Subject
Atomic and Molecular Physics, and Optics
Cited by
2 articles.
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1. Crescent-Shaped Anti-Resonant Hollow Core Fiber;IEEE Journal of Selected Topics in Quantum Electronics;2024
2. Birefringent and low loss semi-tube hollow-core fiber;2023 Optical Fiber Communications Conference and Exhibition (OFC);2023-03