1-km Hollow-Core Fiber With Loss at the Silica Rayleigh Limit in the Green Spectral Region

• Published in: IEEE photonics technology letters Vol. 31; no. 9; pp. 685 - 688
• Main Authors: Chafer, Matthieu, Osorio, Jonas H., Amrani, Foued, Delahaye, Frederic, Maurel, Martin, Debord, Benoit, Gerome, Frederic, Benabid, Fetah
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.05.2019; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Cladding; Core loss; Electron tubes; Fiber optics; hollow-core fiber; Lattices; Loss measurement; Optical fiber losses; Optical fibers; photonic crystal fiber; Rayleigh scattering; Silicon compounds; Silicon dioxide; Spectra; Tubes
• ISSN: 1041-1135; 1941-0174
• DOI: 10.1109/LPT.2019.2904341

In this letter, we report on the fabrication of an inhibited-coupling guiding fiber with a cladding amorphous lattice of nine tubes exhibiting a record loss of 13.8 dB/km at 539 nm. The fiber has been drawn over a length of 1 km with high stability during the drawing process (outer diameter variation of ±0.2%). To our knowledge, this is the first time that loss figures and the fundamental Rayleigh scattering limit of silica are reported for a hollow-core optical fiber in the green spectral range. Also, this is the first report on a tubular fiber draw over such a long length. Additionally, this record loss figure is the lowest ever demonstrated with any kind of optical fibers in the green spectral range.