https://doi.org/10.1140/epjd/s10053-024-00926-3
Regular Article – Optical Phenomena and Photonics
Wideband and ultra-low confinement loss nested hollow-core anti-resonant fiber with double-single-layer structures
School of Mechanical and Electrical Engineering, ZhouKou Normal University, 466000, Zhoukou, China
Received:
27
June
2024
Accepted:
14
October
2024
Published online:
29
October
2024
To further reduce the confinement loss of hollow-core anti-resonant fibers (HC-ARFs), broaden the low-loss operating bandwidth, and decrease the bending losses, this paper proposes a novel double-single-layer nested HC-ARF. The influence of structural parameters on its optical performance is analyzed using the full-vector finite element method, and the relevant structural parameters are optimized accordingly. The results indicate that, after optimizing the structural parameters, the HC-ARF exhibits extremely low confinement loss (on the order of 10–8 dB/km) at the wavelength of 1.55 μm. When the bending radius is 10 cm, the bending loss is also very low (on the order of 10–4 dB/km), which demonstrates an excellent bend-resistant property. Moreover, the HC-ARF possesses a very flat dispersion characteristic, with a low-loss operating bandwidth of approximately 945 nm, covering all the communication bands (O + E + S + C + L band).
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