Girard, Sylvain and Mescia, L. and Vivona, M. and Laurent, A. and Ouerdane, Y. and Marcandella, C. and Prudenzano, F. and Boukenter, A. and Robin, T. and Paillet, P. and Goiffon, Vincent and Cadier, B. and Cannas, M. and Boscaino, R. Coupled experiment/simulation approach for the design of radiation-hardened rare-earth doped optical fibers and amplifiers. (2011) In: 12th European Conference Radiation and Its Effects on Components and Systems (RADECS), 19-23 Sept 2011, Sevilla, Spain.
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Official URL: http://dx.doi.org/10.1109/RADECS.2011.6131309
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 amplification before irradiation may be rather defined and adjusted to optimize the amplifier performance over the whole space mission profile rather than before integration in the harsh environments. Both forward and backward pumping schemes lead to the same kind of degradation with our active fibers. By using this promising coupled approach, radiation-hardened amplifiers nearly insensitive to radiations may be designed in the future.
|Item Type:||Conference or Workshop Item (Paper)|
|Additional Information:||Thanks to IEEE editor. (c) 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works. The definitive version is available at http://ieeexplore.ieee.org|
|Audience (conference):||International conference proceedings|
|Institution:||French research institutions > Commissariat à l'Energie Atomique et aux énergies alternatives - CEA|
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE
Other partners > Université Jean Monnet - St Etienne (FRANCE)
Other partners > IXFIBER (FRANCE)
Other partners > Politecnico di Bari (ITALY)
Other partners > Università degli studi di Palermo (ITALY)
|Deposited By:||Corinne PRUNIER|
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