Preprint Article Version 1 This version is not peer-reviewed

Geometry of Chalcogenide Negative Curvature Fibers for CO2 Laser Transmission

Version 1 : Received: 12 July 2018 / Approved: 16 July 2018 / Online: 16 July 2018 (08:40:16 CEST)

A peer-reviewed article of this Preprint also exists.

Wei, C.; Menyuk, C.R.; Hu, J. Geometry of Chalcogenide Negative Curvature Fibers for CO2 Laser Transmission. Fibers 2018, 6, 74. Wei, C.; Menyuk, C.R.; Hu, J. Geometry of Chalcogenide Negative Curvature Fibers for CO2 Laser Transmission. Fibers 2018, 6, 74.

Journal reference: Fibers 2018, 6, 74
DOI: 10.3390/fib6040074

Abstract

We study impact of geometry on leakage loss in negative curvature fibers made with As2Se3 chalcogenide and As2Se3 chalcogenide glasses for carbon dioxide (CO2) laser transmission. The minimum leakage loss decreases when the core diameter increases both for fibers with six and for fibers with eight cladding tubes. The optimum gap corresponding to the minimum loss increases when the core diameter increases for negative curvature fibers with six cladding tubes. For negative curvature fibers with eight cladding tubes, the optimum gap is always less than 20 μm when the core diameter ranges from 300 μm to 500 μm. The influence of material loss on fiber loss is also studied. When material loss exceeds 102 dB/m, it dominates the fiber leakage loss for negative curvature fiber at a wavelength of 10.6 μm.

Subject Areas

CO2 lasers; negative curvature fibers; chalcogenide glass; fiber loss; mid-IR

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