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Opt Lett. 2011 Mar 1;36(5):669-71. doi: 10.1364/OL.36.000669.

Low loss broadband transmission in hypocycloid-core Kagome hollow-core photonic crystal fiber.

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  • 1Centre for Photonics and Photonic Materials, Department of Physics, University of Bath, Bath, UK.

Abstract

We report on the fabrication of a seven-cell-core and three-ring-cladding large-pitch Kagome-lattice hollow-core photonic crystal fiber (HC-PCF) with a hypocycloid-shaped core structure. We demonstrate experimentally and theoretically that the design of this core shape enhances the coupling inhibition between the core and cladding modes and offers optical attenuation with a baseline of ∼180 dB/km over a transmission bandwidth larger than 200 THz. This loss figure rivals the state-of-the-art photonic bandgap HC-PCF while offering an approximately three times larger bandwidth and larger mode areas. Also, it beats the conventional circular-core-shaped Kagome HC-PCF in terms of the loss. The development of this novel (to our knowledge) HC-PCF has potential for a number of applications in which the combination of a large optical bandwidth and a low loss is a prerequisite.

PMID:
21368943
[PubMed]
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