Lanthanum codoped erbium fibre amplifier |
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| Abstract: | A lanthanum codoped erbium fibre amplifier (La-Er/GeO/sub 2//SiO/sub 2/) has been investigated by comparing such an amplifier with Al-Er/GeO/sub 2//SiO/sub 2/ and Er/GeO/sub 2//SiO/sub 2/ EDFAs. A gain of more than 35 dB at a wavelength of 1.535 mu m was obtained for 1.48 mu m pump power of 35 mW, which was the highest gain among them. The gain spectral profile was moderately flattened at around 1.552 mu m and the gain peaks at 1.535 and 1.552 mu m shifted 0.5-1 nm towards the shorter wavelength region.<> |
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