Effect of IP traffic on optical QoS in DWDM networks

Dense wavelength division multiplexing (DWDM) is most likely to become the core technology of next generation Internet. As QoS provision has become an important part of Internet, DWDM networks are also required to provide differentiated quality of optical service. Optical QoS contains a set of parameters, of which the BER of the lightpath is an important measure of the lightpath performance. We focus on the BER caused by the four wave mixing (FWM) effect in the optical fiber. The effect of IP traffic on the BER performance is analyzed and simulation results are presented.