Abstract

Recently, an optical nonregeneration 1R repeater system that uses an optical amplifier has come to be regarded as a key component for longspan, high bit rate transmission systems. However, a high-speed optical transmission system, especially a multigigabit transmission system, suffers from wavelength dispersion of the fiber. The dispersion compensation techniques^1–3 such as the so-called prechirp technique³ can remove the impediment, thus expanding the transmission distance between 3R repeaters. However, the total span of the nonregenerative chain could be expanded further by the use of optically transparent preequalizating 1R repeaters. In addition, this expansion would be useful for future optical cross-connect networks using optical switches.⁴

© 1992 Optical Society of America