title: Light transmission in negative curvature hollow core fiber in extremely high material loss region.
abstract: In this paper we demonstrate the light transmission in a spectral range of 2.5 to 7.9 µm through a silica negative curvature hollow core fiber (NCHCF) with a cladding consisting of eight capillaries. A separation between the cladding capillaries was introduced to remove the additional resonances in the transmission bands. The measured optical loss at 3.39 µm was about 50 dB/km under a few modes waveguide regime.
authors.affiliation: Fiber Optics Research Center of Russian Academy of Sciences, 38 Vavilov street, Moscow, 119333, Russia.
authors.forename: Anton N
authors.initials: AN
authors.lastname: Kolyadin
authors.forename: Alexey F
authors.initials: AF
authors.lastname: Kosolapov
authors.forename: Andrey D
authors.initials: AD
authors.lastname: Pryamikov
authors.forename: Alexander S
authors.initials: AS
authors.lastname: Biriukov
authors.forename: Victor G
authors.initials: VG
authors.lastname: Plotnichenko
authors.forename: Evgeny M
authors.initials: EM
authors.lastname: Dianov
mesh_terms: D004735:Energy Transfer; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D008027:Light; D012542:Scattering, Radiation; D012822:Silicon Dioxide / Q000737:chemistry*
chemical_list: D012822:Silicon Dioxide