Scalability of an All-optical Multiwavelength Slottedring Metropolitan Area Network

In this paper simulation results of the bit error rate (BER) performance of an all-optical multiwavelength slotted-ring metropolitan area network (MAN) are presented. The simulation results provide insight into the signal-to-noise ratio (SNR) degradation as the optical ring is scaled up in terms of the number of access points on it. The results also enable us to understand the effect of inband crosstalk (generated by the adding and dropping of packets at the optically transparent access points) on the bit error rate. A few techniques to improve the BER performance, resulting from inband crosstalk, are proposed.