Abstract

Erbium-doped, single-mode fiber-amplifiers [1,2,3] could be used as optical repeaters and preamplifiers in future long wavelength (λ = 1.5 μm) optical communication systems. The fiber-amplifier is particularly attractive with its inherent index and mode matching to the fiber medium, low insertion loss and direct splicing capability. We report here the highest speed measurements (2 Gb/s) of optical signal amplification in a rare-earth doped fiber- amplifier. Other measured amplifier characteristics were its spectral gain profile, output power saturation and output signal-to-noise ratio.

© 1988 Optical Society of America