Multiwavelength pumping of erbium-doped fiber amplifiers in the 980-nm band

摘要

ique for significantly increasing the pump power in an erbium doped fiber amplifier by multiplexing pump lasers at different wavelengths is demonstrated. Two pump lasers with a wavelength separation of at least 10 nm are combined with an insertion loss of less than 0.5 dB. The performance tradeoffs as a result of multiwavelength pumping are discussed.