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4 March 2015 Yb-doped large mode area fibers with reduced cladding symmetry
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Large mode area double-cladding Photonic Crystal Fibers (PCFs) with reduced cladding symmetry can provide effective suppression of high-order modes even under a significant heat load. In this work the single mode properties of different PCFs with reduced cladding symmetry are numerically compared by means of a full-vector modal solver based on the finite-element method, capable of taking into account the effects of the fiber heating. The maximum coupled pump power allowing single-mode propagation has been evaluated for each design, providing useful guidelines for further development of this kind of fibers.
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Federica Poli, Enrico Coscelli, Annamaria Cucinotta, Stefano Selleri, and Francois Salin "Yb-doped large mode area fibers with reduced cladding symmetry", Proc. SPIE 9344, Fiber Lasers XII: Technology, Systems, and Applications, 934404 (4 March 2015);

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