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Proceedings Paper

Comparative investigation of methods to determine the group velocity dispersion of an endlessly single-mode photonic crystal fiber
Author(s): Tobias Baselt; Tobias Popp; Bryan Nelsen; Andrés Fabián Lasagni; Peter Hartmann
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Paper Abstract

Endlessly single-mode fibers, which enable single mode guidance over a wide spectral range, are indispensable in the field of fiber technology. A two-dimensional photonic crystal with a silica central core and a micrometer-spaced hexagonal array of air holes is an established method to achieve endless single-mode guidance. There are two possible ways to determine the dispersion: measurement and calculation. We calculate the group velocity dispersion GVD based on the measurement of the fiber structure parameters, the hole diameter and the pitch of a presumed homogeneous hexagonal array and compare the calculation with two methods to measure the wavelength-dependent time delay. We measure the time delay on a three hundred meter test fiber with a homemade supercontinuum light source, a set of bandpass filters and a fast detector and compare the results with a white light interferometric setup. To measure the dispersion of optical fibers with high accuracy, a time-frequency-domain setup based on a Mach-Zehnder interferometer is used. The experimental setup allows the determination of the wavelength dependent differential group delay of light travelling through a thirty centimeter piece of test fiber in the wavelength range from VIS to NIR. The determination of the GVD using different methods enables the evaluation of the individual methods for characterizing the endlessly single-mode fiber.

Paper Details

Date Published: 16 May 2017
PDF: 7 pages
Proc. SPIE 10232, Micro-structured and Specialty Optical Fibres V, 102320K (16 May 2017); doi: 10.1117/12.2265688
Show Author Affiliations
Tobias Baselt, Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS (Germany)
Univ. of Applied Sciences Zwickau (Germany)
Technische Univ. Dresden (Germany)
Tobias Popp, Univ. of Applied Sciences Zwickau (Germany)
Bryan Nelsen, Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS (Germany)
Univ. of Applied Sciences Zwickau (Germany)
Andrés Fabián Lasagni, Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS (Germany)
Technische Univ. Dresden (Germany)
Peter Hartmann, Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS (Germany)
Univ. of Applied Sciences Zwickau (Germany)


Published in SPIE Proceedings Vol. 10232:
Micro-structured and Specialty Optical Fibres V
Kyriacos Kalli; Jiri Kanka; Alexis Mendez; Pavel Peterka, Editor(s)

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