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980 nm band pumped Er3+-doped tellurite-based fibre amplifier with low-noise figure of less than 4.5 dB

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4 Author(s)
Mori, A. ; NTT Photonics Labs., Nippon Telegraph & Telephone Corp., Ibaraki, Japan ; Ono, H. ; Shikano, K. ; Shimizu, M.

The amplification characteristics of an Er3+-doped tellurite-based fibre amplifier (EDTFA) with 980 nm band pumping are described. The optimum pump wavelength and length of the newly developed EDTF are investigated in order to obtain both a low noise figure and a high gain simultaneously. We realise a low noise figure of less than 4.5 dB with a pump wavelength of 976.5 nm and a 0.4 m EDTF.

Published in:

Electronics Letters  (Volume:38 ,  Issue: 23 )