On the distribution and performance implications of filtered interferometric crosstalk in optical WDM networks

The distribution and performance implications of filtered interferometric c rosstalk in optical networks is theoretically and experimentally studied. T he probability density function is estimated by using a maximum entropy app roach based on analytically derived statistical moments. The theoretical re sults are confirmed by relevant experimental data obtained from an amplitud e shift keying direct detection (ASK/DD) system using directly, and externa lly modulated light sources. Power penalties are measured for both types of source modulation, The experimental results are in good agreement with the ory.