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Wide-linewidth phase diversity homodyne receivers

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4 Author(s)
Kazovsky, Leonid G. ; Bell Commun. Res., Red Bank, NJ, USA ; Welter, R. ; Elrefaie, A.F. ; Sessa, W.

The use of phase diversity homodyne receivers, which have excellent performance even when the laser linewidth is of the same order of magnitude as the bit rate, to construct coherent systems with semiconductor lasers and moderate bandwidth receivers is considered. Theoretical, experimental, and computer simulation results of a study of a linewidth homodyne phase-diversity receiver is presented. A 150-Mb/s system with an IF linewidth of more than 50% of the bit rate is investigated in depth and is experimentally shown to operate within 1.8 dB from its theoretical limit

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Lightwave Technology, Journal of  (Volume:6 ,  Issue: 10 )