A study of optical beat interference between Fabry-Perot lasers
作者： S.L. Woodward , J.W. Stayt , D.M. Romero , J.M. Freund , G.J. Przybylek
DOI: 10.1109/68.669406
关键词:
摘要: Optical beat interference can be the dominant source of noise in subcarrier-multiplexed (SCM) passive-optical networks (PONs). We have studied how relative-optical-beat-interference (ROBIN) between Fabry-Perot (FP) lasers varies using with both equal, and unequal mode spacing. In our experiments, ROBIN ranged from -96 dB/Hz to -115 dB/Hz. Because level depends on distribution optical power lasers' modes, different spacing led a 4-dB improvement over equal The is also correlated linewidth interfering modes. Broadening these modes by driving below threshold lowered an additional 10 dB.
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