Optical properties of low loss (70 dB/km) hypocycloid-core Kagome hollow core photonic crystal fiber for Rb and Cs based optical applications

Tom Bradley (1) , Yingying Wang (2) , Meshaal Alharbi (1) , Benoît Debord (2) , Coralie Fourcade Dutin (1, 2) , Benoît Beaudou (2) , Frédéric Gérôme (2) , Fetah A. Benabid (1, 2)

1 University of Bath [Bath]
2 XLIM-PHOTONIQUE - PHOTONIQUE

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 $40~ \mu{\rm m}$ , 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.

Domaines: Sciences de l'ingénieur [physics]; Optique / photonique

Tom Bradley, Yingying Wang, Meshaal Alharbi, Benoît Debord, Coralie Fourcade Dutin, et al.. Optical properties of low loss (70 dB/km) hypocycloid-core Kagome hollow core photonic crystal fiber for Rb and Cs based optical applications. Journal of Lightwave Technology, 2013, 31 (16), pp.2752 - 2755. ⟨10.1109/JLT.[::2013::].2273126⟩. ⟨hal-00923913⟩