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Opt Lett. 2006 Dec 15;31(24):3574-6.

Large-pitch kagome-structured hollow-core photonic crystal fiber.

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  • 1Centre for Photonic Materials, University of Bath, Bath, UK.


We report the fabrication and characterization of a new type of hollow-core photonic crystal fiber based on large-pitch (approximately 12 microm) kagome lattice cladding. The optical characteristics of the 19-cell, 7-cell, and single-cell core defect fibers include broad optical transmission bands covering the visible and near-IR parts of the spectrum with relatively low loss and low chromatic dispersion, no detectable surface modes and high confinement of light in the core. Various applications of such a novel fiber are also discussed, including gas sensing, quantum optics, and high harmonic generation.

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