Guiding 2.94 μm using low-loss microstructured antiresonant triangular-core fibers

Abstract

We introduce a new simple design of hollow-core microstructured fiber targeted to guide midinfrared light at a wavelength 2.94 µm. The fiber has a triangular-core supported via silica-glass webs enclosed by a large hollow capillary tube. The fiber specific dimensions are determined based on the guiding technique, which is based on the anti-resonant mechanism. For a triangular-core with side length 100 µm, the fiber has a minimum transmission loss 0.08 ± 0.005 dB/m and dispersion 2.3 ps/km/nm at the operational wavelength 2.94 µm.

Impact of core-cladding boundary shape on the waveguide properties of hollow core microstructured fibers

“…1). In particular,the low loss guiding at wavelength  = 2.94 m in silica glass triangular microstructure was demonstrated in [21].…”

“…This type of light localization leads to a decrease in the waveguide loss level in comparison with the waveguide microstructures with N > 4 (figure 1). In particular, the low loss guiding at wavelength λ = 2.94 µm in silica glass triangular microstructure was demonstrated in [21].…”

Design and analysis of Hollow-core fiber with anti-resonant structure for Ethylene detection

“…The fabrication of high-purity synthetic silica of photonic bandgap fiber has been proposed in 2013 with an operation bandwidth of 3.1-3.7 µm, the low loss attenuation from 19 cells core design with a thin core wall surround is 0.13 dB/m [2]. In 2016, the new simple design of silica-based hollow core microstructured fiber, the triangular hollow core based on anti-resonant guidance, was presented to guide the mid-IR light at 2.94 µm with a minimum transmission loss of 0.08 ± 0.005 dB/m [3]. In 2019, The nested hollow core anti-resonant fiber fabricated from pure silica gas for nitrous oxide sensing has been proposed.…”