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We present a field-trial evaluation of an in-line fiber optical parametric amplifier (FOPA) without polarization dependent gain (PDG). This parametric amplifier uses a polarization diversity technique (PDT) to reduce the PDG to less than 0.05 dB. We analyzed the performance of a system with an in-line FOPA comparing the results of its bit-error-rate (BER) with the BER of a system with an in-line Erbium...
In this work we present experimental results concerning a new technique that uses parametric amplification to merge two binary signals into a single quaternary amplitude-shift keying (4-ASK) signal. We also propagate such quaternary signal through a 75-km long standard fibre link; the measured eye-opening penalty was lower than 1 dB.
We present an experimental investigation of cross-layer effect caused by fibre four-wave mixing (FWM) wavelength converters. Measurements, performed on a 40-km long standard fibre link located in a field-trial network, suggest that the use of such converters may induce power penalties as high as 2.9 dB on the packet error rate (PER) of Internet Protocol (IP) applications. We also present empirical...
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