Ultralow loss hollow-core negative curvature fibers with nested elliptical antiresonance tubes

Jiali Zhang, Jie Cao, Boyi Yang, Xuesheng Liu, Yang Cheng, Chun Bao, Shangran Xie, Liquan Dong, Qun Hao

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Abstract

Hollow-core negative curvature fibers can confine light within air core and have small nonlinearity and dispersion and high damage threshold, thereby attracting a great deal of interest in the field of hollow core fibers. However, reducing the loss of hollow-core negative curvature fibers is a serious problem. On this basis, three new types of fibers with different nested tube structures are proposed in the near-infrared spectral regions and compared in detail with a previously proposed hollow-core negative curvature fiber. We used finite-element method for numerical simulation studies of their transmission loss, bending loss, and single-mode performance, and then the transmission performance of various structural fibers is compared. We found that the nested elliptical antiresonant fiber 1 has better transmission performance than that of the three other types of fibers in the spectral range of 0.72-1.6 µm. Results show that the confinement loss of the LP01 mode is as low as 6.45×10-6 dB/km at λ = 1.06 µm. To the best of our knowledge, the record low level of confinement loss of hollow-core antiresonant fibers with nested tube structures was created. In addition, the nested elliptical antiresonant fiber 1 has better bending resistance, and its bending loss was below 2.99×10-2 dB/km at 5 cm bending radius.

Original languageEnglish
Pages (from-to)17437-17450
Number of pages14
JournalOptics Express
Volume30
Issue number10
DOIs
Publication statusPublished - 9 May 2022

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Zhang, J., Cao, J., Yang, B., Liu, X., Cheng, Y., Bao, C., Xie, S., Dong, L., & Hao, Q. (2022). Ultralow loss hollow-core negative curvature fibers with nested elliptical antiresonance tubes. Optics Express, 30(10), 17437-17450. https://doi.org/10.1364/OE.454263