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Hypocycloid-shaped hollow-core photonic crystal fiber Part I: Arc curvature effect on confinement loss

By Debord B., Alharbi M., Bradley T., Fourcade Dutin C., Wang Y. Y., Luca Vincetti, G&#233 F. and Benabid F.

Abstract

We report on numerical and experimental studies showing the influence of arc curvature on the confinement loss in hypocycloid-core Kagome hollow-core photonic crystal fiber. The results prove that with such a design the optical performances are strongly driven by the contour negative curvature of the core-cladding interface. They show that the increase in arc curvature results in a strong decrease in both the confinement loss and the optical power overlap between the core mode and the silica core-surround, including a modal content approaching true single-mode guidance. Fibers with enhanced negative curvature were then fabricated with a record loss-level of 17 dB/km at 1064 nm

Topics: Fiber design and fabrication, photonic crystal fibers (PCFs)
Publisher: 'The Optical Society'
Year: 2013
DOI identifier: 10.1364/OE.21.028597
OAI identifier: oai:iris.unimore.it:11380/1011724

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