Abstract
The Er3+-doped fiber amplifiers have recently been noted as key components for high-speed optical communications because of their high gain, polarization insensitive and bit-rate free characteristics1–3. We have shown that Er3+ amplifiers are very useful for soliton transmission systems . It has been also shown that a transform-limited soliton pulse can be generated from a gain switched DFB laser diode using a narrow-band Fabry-Perot resonator (FPR) and an Er3+-doped fiber amplifier (EDFA)5. However, thus far, no one has succeeded in achieving single-pass soliton transmission over long distances using multiple optical repeaters.
© 1990 Optical Society of America
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