EXPERIMENTAL COMPARISON OF THE EFFECT OF DISCRETE AND DISTRIBUTED PATH INBAND CROSSTALK ON SYSTEM PERFORMANCE - APPLICATION TO PREDICTING SYSTEM PERFORMANCE PENALTIES

The system performance degradations of inband crosstalk produced by di stributed Rayleigh scattering and a single discrete time delayed path have been measured in the same system, Rayleigh scatter crosstalk degr ades performance more than equal amounts of discrete crosstalk, By par ameterizing the system bit error rate (BER) and received power, we hav e separated the optical and electrical noise contributions to the BER based on their intensity and crosstalk scaling. We observed behavior c onsistent with earlier models, but found an unexpected increase in the total optical noise. This excess noise had a very regular linear scal ing with crosstalk power. Because of;its well defined crosstalk and in tensity scaling, this easily measured noise term can be used as a corr ection to established models to more accurately estimate system perfor mance at high optical powers and low crosstalk levels.