A fiber has been developed for use in extended L-band amplifiers, utilizing the wavelength range from 1565 to 1620 nm. The fiber is silica based and has low splice loss to standard telecommunication fiber. The quantum conversion efficiency is > 60%.|A fiber has been developed for use in extended L-band amplifiers, utilizing the wavelength range from 1565 to 1620 nm. The fiber is silica based and has low splice loss to standard telecommunication fiber. The quantum conversion efficiency is > 60%.

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