Transmission at bit-rates beyond 10 Gb/s [1] becomes increasingly difficult because of insufficient transmitter bandwidth, limited gain-bandwidth product of APDs, and inadequate bandwidth of the optical receiver, amplifiers and multiplexing electronics. By employing novel microwave circuit design techniques, we have fabricated an array of ultra-high-speed systems components to help overcome these limitations. In this paper, we report on the results of the first transmission experiment at 11 Gb/s with and without optical amplifiers, covering span lengths of 81 km and 93.8 km of dispersion-shifted fiber, respectively.

© 1989 Optical Society of America

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