980 nm band pumped Er/sup 3+/-doped tellurite-based fibre amplifier with low-noise figure of less than 4.5 dB |
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| Authors: | Mori A Ono H Shikano K Shimizu M |
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| Affiliation: | NTT Photonics Labs., Nippon Telegraph & Telephone Corp., Ibaraki; |
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| Abstract: | The amplification characteristics of an Er/sup 3+/-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. |
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