期刊
OPTICS COMMUNICATIONS
卷 497, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.optcom.2021.127194
关键词
Hollow-core fibers; Negative curvature fibers; Mid-IR; Thulium fiber lasers
类别
资金
- RWU Foundation to Promote Scholarship and Teaching program
In this study, a novel tubular hollow-core fiber design with extended cladding structures is proposed to achieve low transmission losses and dominant single-mode guidance in the infrared region. The fiber parameters are optimized for low-loss operation at 2 μm wavelength, showing promising results for low-loss transmission in the infrared spectrum.
In this study, a novel tubular hollow-core fiber design with extended cladding structures aiming low transmission losses and dominant single-mode guidance in the infrared region is proposed. The fiber parameters are optimized to achieve low-loss operation at the target wavelength of 2 mu m, at which the emission spectrum of thulium-doped fiber lasers are centered. The confinement loss of the fundamental mode is found to be less than 0.02 dB/km in the near- and mid-infrared region, which makes the proposed design a strong alternative for conventional step-index silica optical fibers. Strong suppression of the higher order modes, and low bending sensitivity are also observed in the proposed design. The proposed fiber shows promising results to achieve low-loss transmission in the infrared spectrum.
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