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Optical Properties of Low Loss (70dB/km) Hypocycloid-Core Kagome Hollow Core Photonic Crystal Fiber for Rb and Cs Based Optical Applications

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8 Author(s)
Thomas D. Bradley ; Gas Phase Photonic and Microwave Materials Group, XLim, Research Institute, CNRS UMR 6172, University of Limoges, France ; Yingying Wang ; Meshaal Alharbi ; Benoit Debord
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We report on hypocycloid core shaped hollow-core Kagome fiber with a record loss of 70 dB/km at a spectral range of around 750-850 nm, which is compatible with Cs and Rb based applications. The fiber exhibits a single mode operation in a core diameter as large as 40 μm, and very low sensitivity to bend. We show experimentally that the bending-loss is limited by coupling between the guiding core mode and the modes in the cladding holes.

Published in:

Journal of Lightwave Technology  (Volume:31 ,  Issue: 16 )