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Fibers 2018, 6(4), 74; https://doi.org/10.3390/fib6040074

Geometry of Chalcogenide Negative Curvature Fibers for CO2 Laser Transmission

1
Department of Electrical and Computer Engineering, Baylor University, Waco, TX 76798, USA
2
Department of Computer Science and Electrical Engineering, University of Maryland Baltimore County, Baltimore, MD 21227, USA
*
Author to whom correspondence should be addressed.
Received: 12 July 2018 / Revised: 27 September 2018 / Accepted: 27 September 2018 / Published: 30 September 2018
(This article belongs to the Special Issue Hollow core optical fibers)
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Abstract

We study the impact of geometry on leakage loss in negative curvature fibers made with As 2 Se 3 chalcogenide and As 2 S 3 chalcogenide glasses for carbon dioxide (CO 2 ) 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 μ m when the core diameter ranges from 300 μ m to 500 μ m. The influence of material loss on fiber loss is also studied. When material loss exceeds 10 2 dB/m, it dominates the fiber leakage loss for negative curvature fiber at a wavelength of 10.6 μ m. View Full-Text
Keywords: CO2 lasers; negative curvature fibers; chalcogenide glass; fiber loss; mid-IR CO2 lasers; negative curvature fibers; chalcogenide glass; fiber loss; mid-IR
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Wei, C.; Menyuk, C.R.; Hu, J. Geometry of Chalcogenide Negative Curvature Fibers for CO2 Laser Transmission. Fibers 2018, 6, 74.

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