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The purpose of this paper is to demonstrate the potential of an electrical signal processing technique to mitigate the effect of intersymbol interference in metro optical networks, using optical coherent detection. Intersymbol interference in fiber-optic systems can severely degrade the system performance and subsequently limit both the maximum transmission distance and data rate. The main sources...
We experimentally demonstrate synchronous demodulation of 42.8 Gbaud using an analog optical phase-locked loop and COTS DFB lasers having an aggregate linewidth of 2 MHz. OSNR and CD tolerance are measured.
We review coherent receiver implementations and their performance for phase-shift keyed transmission. Experimental results of a heterodyne receiver for 10 Gb/s DPSK are presented as well.
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