5 Gbit/s, 233 km optical fiber transmission experiment employing five semiconductor laser amplifiers

A directly modulated 1.519- mu m distributed-feedback laser signal was transmitted over 233 km of single-mode fiber consisting of dispersion shifted fiber and conventional step-index fiber to minimize the dispersion penalty. The power penalty after the transmission was 0.25 dB. The results show the effectiveness of an optical amplifier repeater system for high-speed long-haul fiber optic transmission.<
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