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Effects of fiber nonlinearities and amplifier spacing on ultra-long distance transmission

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2 Author(s)
J. P. Gordon ; AT&T Bell Labs., Holmdel, NJ, USA ; L. F. Mollenauer

It is shown that it should be possible to send error-free signals at a 2.5-Gb rate (or higher) over distances of at least 9000 km using an amplitude shift keying (ASK) soliton modulation system. To accomplish this, the amplifiers must be kept close enough that their power gain is less than 10 dB. (It is noted that timing jitter and other noise effects measured in recent soliton transmission experiments carried out at low D and with amplifier spacing of 25 km are in close accord with predictions of this work). Frequency division multiplexing of several channels over the same fiber should also be possible, as solitons of different frequencies interact very weakly, provided the distance over which they pass through one another is large compared to the amplifier spacing

Published in:

Journal of Lightwave Technology  (Volume:9 ,  Issue: 2 )