Abstract
ABSTRACT The effect produced by Four-Wave Mixing (FWM) in a Wavelength Division Multiplexing (WDM) transmission iscomplex to analyze due to its many dependencies. When the optical channels are equally spaced in a WDM transmission, new optical generated signals will fall entirely onto other channels thus causing mband crosstalk. The channel that willsuffer from more crosstalk components is that in the middle of the signal band. In this paper we present a theoretical studyof the total crosstalk power generated onto each optical channel, equally spaced, using Dispersion Shifted Fibre. Ourresults show that when the WDM signal range is larger than a certain value, the most degraded channel is not the one thatsuffers from more contributions but the one that suffers from contributions with higher FWM efficiency. We have studiedthe limitation that FWM imposes on the number of channels and channel spacing regarding the most degraded channel.Keywords: FWM, DSF, WDM, Crosstalk, Power Penalty 1. INTRODUCTION
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