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10 February 2011 Hybrid large mode area photonic crystal fiber for distributed spectral filtering and single-mode operation
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Abstract
The properties of a large mode area Yb-doped double-cladding hybrid photonic crystal fiber, with antisymmetric high-index inclusions, have been analyzed. Simulations, carried out through a finite-element based modal solver, and experimental measurements have demonstrated the narrow spectral filtering capability of this fiber, with a passband of about 80 nm in the Yb gain region. Moreover, high-order mode suppression has been demonstrated with a proper air-hole size. Finally, the stress-induced birefringence due to the Ge-doped rods used as high-index insets has been investigated, accounting for the polarization-maintaining behaviour of the manufactured fiber.
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Federica Poli, Enrico Coscelli, Thomas T. Alkeskjold, Davide Passaro, Annamaria Cucinotta, Stefano Selleri, Lasse Leick, and Jes Broeng "Hybrid large mode area photonic crystal fiber for distributed spectral filtering and single-mode operation", Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 79141P (10 February 2011); https://doi.org/10.1117/12.873715
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