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15 February 2012 Avoided-crossing based modal cut-off analysis of 19-cell double-cladding photonic crystal fibers
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Abstract
The modal cut-off properties of Yb-doped Double-Cladding Photonic Crystal Fibers (DC-PCFs) with 19-cell core have been analyzed considering an innovative approach, where the avoided crossing between the guided modes and the highest-index cladding mode of the real fiber is taken as the cut-off condition. A finite element-based full-vector modal solver has been applied to calculate the modes of DC-PCFs with different normalized air-hole size and core refractive index. Simulations have shown the possibility to find generalized results for the modal cut-off wavelengths of 19-cell DC-PCFs.
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Federica Poli, Enrico Coscelli, Thomas T. Alkeskjold, Michele Sozzi, Annamaria Cucinotta, Stefano Selleri, Lasse Leick, and Jes Broeng "Avoided-crossing based modal cut-off analysis of 19-cell double-cladding photonic crystal fibers", Proc. SPIE 8237, Fiber Lasers IX: Technology, Systems, and Applications, 823732 (15 February 2012); https://doi.org/10.1117/12.906381
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