A new model to study gain competition in high-power fiber amplifiers, which accounts for the full-vector nature of the propagating modes and thermal effects on core overlap, is applied to simulate the performance of an active rod-type fiber under severe heat load. Model tests on a Yb-doped large-pitch reduced symmetry photonic-crystal fiber show a successful analysis of gain competition.
Full-vector modeling of thermally-driven gain competition in Yb-doped reduced symmetry photonic-crystal fiber / Rosa, Lorenzo; Coscelli, Enrico; Poli, Federica; Cucinotta, Annamaria; Selleri, Stefano. - In: OPTICAL AND QUANTUM ELECTRONICS. - ISSN 0306-8919. - 48:3(2016), pp. 1-8. [10.1007/s11082-016-0493-2]
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