Improvement of differential modal gain in few-mode fibre amplifier by employing ring-core erbium-doped fibre
Ono, H ; Hosokawa, T ; Ichii, K ; Matsuo, S ; Yamada, M
Electronics letters, 2015-01, Vol.51 (2), p.172-173 [Periódico revisado por pares]The Institution of Engineering and Technology
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