Demonstrated is a 16.5 dB all-fibre optical amplifier at 546 nm using Er3+-doped fluoride fibre for a signal power of −30 dBm by forward upconversion pumping of a 974 nm laser diode. Results show Er3+-doped fluoride fibre is a promising candidate for 0.54 µm optical amplifiers.
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Qin et al. (2007) studied this question.
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