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We developed an approach to design radiation-hardened rare earth -doped fibers and amplifiers. This methodology combines testing experiments on these devices with particle swarm optimization (PSO) calculations. The composition of Er/Yb-doped phosphosilicate fibers was improved by introducing Cerium inside their cores. Such composition strongly reduces the amplifier radiation sensitivity, limiting its degradation: we observed a gain decreasing from 19 dB to 18 dB after 50 krad whereas previous studies reported higher degradations up to 0°dB at such doses. PSO calculations, taking only into account the radiation effects on the absorption efficiency around the pump and emission wavelengths, correctly reproduce the general trends of experimental results. This calculation tool has been used to study the influence of the amplifier design on its radiation response. The fiber length used to ensure the optimal …
Publication date: 
19 Sep 2011

Sébastien Girard, Luciano Mescia, Marilena Vivona, Arnaud Laurent, Youcef Ouerdane, Claude Marcandella, Francesco Prudenzano, Aziz Boukenter, Thierry Robin, Philippe Paillet, Vincent Goiffon, Benoît Cadier, Marco Cannas, Roberto Boscaino

Biblio References: 
Pages: 305-313
2011 12th European Conference on Radiation and Its Effects on Components and Systems