Personne :
Talbot, Lauris

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Talbot
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Lauris
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Université Laval. Département de physique, de génie physique et d'optique
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ncf13703193
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  • Publication
    Accès libre
    Large area Bragg grating for pump recycling in cladding-pumped multicore erbium-doped fiber amplifiers
    (Optical Society of America, 2022-05-09) Talbot, Lauris; Matte-Breton, Charles; LaRochelle, Sophie; Messaddeq, Younès; Bernier, Martin
    We demonstrate for the first time that a Bragg grating can be written over a large area inside the cladding of a multicore erbium-doped fiber amplifier to increase the power conversion efficiency (PCE) by recycling the output pump power. Our results indicate that a Bragg grating covering ~25% of the cladding area allows to recycle 19% of the output pump power which leads to a relative increase of the PCE by 16% for an input pump power of 10.6 W in the specific case of an eight-core erbium-doped fiber with a length of 20.3 m and one core loaded with an input signal power of 1.5 dBm.