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Flattening the gain spectrum of an erbium-doped fibre amplifier by connecting an Er3+-doped SiO2-Al2O3 fibre and an Er3+-doped multicomponent fibre

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6 Author(s)
Yamada, M. ; NTT Opto-Electron. Labs., Ibaraki ; Shimizu, M. ; Ohishi, Y. ; Horiguchi, M.
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A technique is proposed for designing the gain spectrum in Er3+-doped fibre amplifiers. It uses an active fibre constructed by connecting two erbium-doped fibres with different host materials. An Er3+-doped SiO2-Al2O3 fibre and an Er3+-doped multicomponent fibre were connected to flatten the gain spectrum in the 1.55 μm band. A flat gain spectrum was achieved in the 1.543-1.558 μm bandwidth range with a signal gain of 26 dB and a noise figure of less than 6 dB

Published in:

Electronics Letters  (Volume:30 ,  Issue: 21 )