Thermal effect-resilient design of large mode area double-cladding Yb-doped photonic crystal fibers

Enrico Coscelli; Federica Poli; Mette M. Jørgensen; Thomas T. Alkeskjold; Lasse Leick; Jes Broeng; Michele Sozzi; Alessandro Candiani; Annamaria Cucinotta; Stefano Selleri

doi:10.1117/12.2004048

26 February 2013 Thermal effect-resilient design of large mode area double-cladding Yb-doped photonic crystal fibers

Enrico Coscelli, Federica Poli, Mette M. Jørgensen, Thomas T. Alkeskjold, Lasse Leick, Jes Broeng, Michele Sozzi, Alessandro Candiani, Annamaria Cucinotta, Stefano Selleri

Author Affiliations +

Proceedings Volume 8601, Fiber Lasers X: Technology, Systems, and Applications; 86012O (2013) https://doi.org/10.1117/12.2004048
Event: SPIE LASE, 2013, San Francisco, California, United States

Abstract

The effects of thermally-induced refractive index change on the guiding properties of different large mode area fibers have been numerically analyzed. A simple but accurate model has been applied to obtain the refractive index change in the fiber cross-section, and a full-vector modal solver based on the finite-element method has been used to calculate the guided modes of the fibers operating at high power levels. The results demonstrate that resonant structures added to the fiber cross-section can be exploited to provide efficient suppression of high-order modes with a good resilience to thermal effects.

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Enrico Coscelli, Federica Poli, Mette M. Jørgensen, Thomas T. Alkeskjold, Lasse Leick, Jes Broeng, Michele Sozzi, Alessandro Candiani, Annamaria Cucinotta, and Stefano Selleri "Thermal effect-resilient design of large mode area double-cladding Yb-doped photonic crystal fibers", Proc. SPIE 8601, Fiber Lasers X: Technology, Systems, and Applications, 86012O (26 February 2013); https://doi.org/10.1117/12.2004048

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