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An arrangement of transmission-fiber dispersions for increasing the spacing between optical amplifiers in lumped repeater systems

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3 Author(s)
Henmi, H. ; Opto-Electron. Res. Labs., NEC Corp., Tokyo, Japan ; Saito, T. ; Nakaya, S.

A method for suppressing degradation due to nonlinearities in transmission fibers in lumped repeater systems is proposed. This method increases optical amplifier repeater spacing by setting a normal dispersion fiber as a transmission fiber, and by setting a 1.3- mu m zero-dispersion wavelength fiber as a dispersion compensator at the end in each repeater spacing so as to keep the total dispersion of the complete amplifier repeater spacing at around zero. Employing this method, a less than 1-dB power penalty, 10-Gb/s, 950-km transmission has been demonstrated, keeping the repeater spacings at 95 km and setting the repeater output power at 13 dBm.<>

Published in:

Photonics Technology Letters, IEEE  (Volume:5 ,  Issue: 11 )