An Er3+-doped fluorophosphate glass fibre amplifier has been constructed for the first time. Its fundamental gain and noise characteristics have been characterised. This amplifier can amplify an 8 channel WDM signal in the 1532–1560 nm wavelength region with a gain non-uniformity of 1.1 dB. In this case, the average signal gain and the noise figure of the fibre are 8.2 dB and < 6 dB, respectively.
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Ono et al. (1996) studied this question.
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