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Fibers 2018, 6(4), 68; https://doi.org/10.3390/fib6040068

Understanding Dispersion of Revolver-Type Anti-Resonant Hollow Core Fibers

1
Leibniz Institute of Photonic Technology, Albert-Einstein-Str. 9, 07745 Jena, Germany
2
Otto Schott Institute of Materials Research (OSIM), Friedrich Schiller University of Jena, Fraunhoferstr. 6, 07743 Jena, Germany
3
Abbe Center of Photonics and Faculty of Physics, Friedrich-Schiller-University Jena, Max-Wien-Platz 1, 07743 Jena, Germany
*
Author to whom correspondence should be addressed.
Received: 24 August 2018 / Revised: 14 September 2018 / Accepted: 14 September 2018 / Published: 20 September 2018
(This article belongs to the Special Issue Hollow core optical fibers)
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Abstract

Here, we analyze the dispersion behavior of revolver-type anti-resonant hollow core fibers, revealing that the chromatic dispersion of this type of fiber geometry is dominated by the resonances of the glass annuluses, whereas the actual arrangement of the anti-resonant microstructure has a minor impact. Based on these findings, we show that the dispersion behavior of the fundamental core mode can be approximated by that of a tube-type fiber, allowing us to derive analytic expressions for phase index, group-velocity dispersion and zero-dispersion wavelength. The resulting equations and simulations reveal that the emergence of zero group velocity dispersion in anti-resonant fibers is fundamentally associated with the adjacent annulus resonance which can be adjusted mainly via the glass thickness of the anti-resonant elements. Due to their generality and the straightforward applicability, our findings will find application in all fields addressing controlling and engineering of pulse dispersion in anti-resonant hollow core fibers. View Full-Text
Keywords: fiber optics; fiber design and fabrication; microstructured fibers; anti-resonant fibers fiber optics; fiber design and fabrication; microstructured fibers; anti-resonant fibers
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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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Zeisberger, M.; Hartung, A.; Schmidt, M.A. Understanding Dispersion of Revolver-Type Anti-Resonant Hollow Core Fibers. Fibers 2018, 6, 68.

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