We report on numerical and experimental studies on the influence of cladding ring-number on the confinement and bend loss in hypocycloid-shaped Kagome hollow core photonic crystal fiber. The results show that beyond the second ring, the ring number has a minor effect on confinement loss whereas the bend loss is strongly reduced with the ring-number increase. Finally, the results show that the increase in the cladding ring-number improves the modal content of the fiber.
Alharbi, M., Bradley, T., Debord, B., Fourcade-dutin, C., Ghosh, D., Vincetti, L., Gérôme, F., & Benabid, F. (2013). Hypocycloid-shaped hollow-core photonic crystal fiber Part II: Cladding effect on confinement and bend loss. Optics Express, 21(23), 28609-28616. https://doi.org/10.1364/OE.21.028609