Thermal effects are currently appointed as the main bottleneck to power scaling of fiber lasers. In this letter, the single-mode properties of Yb-doped rod-type photonic crystal fibers with reduced symmetry in the inner cladding under severe heat load have been analyzed. Three fibers with different cross-sectional geometry have been compared by calculating the single-mode regime and effective area with a full-vector modal solver based on the finite-element method, properly combined with a thermal model to include the effects of fiber heating on the guiding properties. Results have demonstrated that, with an optimized cross-sectional design, it is possible to obtain single-mode propagation for a coupled pump power up to 200 W, while keeping the effective area ~2400μm2.

Single-mode propagation in Yb-doped large mode area fibers with reduced cladding symmetry / Poli, Federica; Coscelli, Enrico; Cucinotta, Annamaria; Selleri, Stefano; Salin, Francois. - In: IEEE PHOTONICS TECHNOLOGY LETTERS. - ISSN 1041-1135. - 26:24(2014), pp. 2454-2457. [10.1109/LPT.2014.2358690]

Single-mode propagation in Yb-doped large mode area fibers with reduced cladding symmetry

POLI, Federica;COSCELLI, Enrico;CUCINOTTA, Annamaria;SELLERI, Stefano;
2014-01-01

Abstract

Thermal effects are currently appointed as the main bottleneck to power scaling of fiber lasers. In this letter, the single-mode properties of Yb-doped rod-type photonic crystal fibers with reduced symmetry in the inner cladding under severe heat load have been analyzed. Three fibers with different cross-sectional geometry have been compared by calculating the single-mode regime and effective area with a full-vector modal solver based on the finite-element method, properly combined with a thermal model to include the effects of fiber heating on the guiding properties. Results have demonstrated that, with an optimized cross-sectional design, it is possible to obtain single-mode propagation for a coupled pump power up to 200 W, while keeping the effective area ~2400μm2.
2014
Single-mode propagation in Yb-doped large mode area fibers with reduced cladding symmetry / Poli, Federica; Coscelli, Enrico; Cucinotta, Annamaria; Selleri, Stefano; Salin, Francois. - In: IEEE PHOTONICS TECHNOLOGY LETTERS. - ISSN 1041-1135. - 26:24(2014), pp. 2454-2457. [10.1109/LPT.2014.2358690]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2802956
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