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.

© 2022 Optica Publishing Group

Low loss nested hollow-core anti-resonant fiber at 2 µm spectral range

Xin Zhang, Weihua Song, Zihan Dong, Jingyuan Yao, Shuangqin Wan, Yubin Hou, and Pu Wang
Opt. Lett. 47(3) 589-592 (2022)

Single-ring hollow-core anti-resonant fiber with a record low loss (4.3 dB/km) for high-power laser delivery at 1 µm

Shuai Gu, Xin Wang, Haoqiang Jia, Zhenggang Lian, Xiang Shen, Yifan Mai, and Shuqin Lou
Opt. Lett. 47(22) 5925-5928 (2022)

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)

Birefringent large-mode-area anti-resonant hollow core fiber in the 1.9 µm wavelength window

Grzegorz Stępniewski, Dominik Dobrakowski, Dariusz Pysz, Rafał Kasztelanic, Ryszard Buczyński, and Mariusz Klimczak
Opt. Lett. 45(15) 4280-4283 (2020)

Hybrid structure polarization-maintaining hollow-core photonic bandgap fiber with anti-resonant tubes and silicon layers

Kailing Hu, Shuqin Lou, Haoqiang Jia, and Xin Wang
Opt. Express 30(23) 42035-42045 (2022)