Crosstalk penalty in a two-channel ASK heterodyne detection system with non-negligible laser linewidth.
01 January 1987
Crosstalk penalties as a function of channel spacing were measured in a two-channel ASK heterodyne system using 1.55micron DFB lasers. For an IF linewidth to bit rate of 0.5, the channel spacing must be greater than 13 times bit rate for negligible crosstalk penalty.