Crosstalk and bit error rate performance of a proposed optical cross-connect topology

This paper presents an optical wavelength division multiplexed (WDM) cross-connect (OXC) topology, which is the modified form of the existing topologies. The analytical approach for the proposed topology is derived to explore the effect of crosstalk induced in multichannel WDM network due to OXC. The factors that affect the magnitude of crosstalk in the OXC are investigated and identified. The bit error rate (BER) performance of a WDM optical system is evaluated at a bit rate of 10 Gb/s on account of OXC-induced crosstalk and different noises. Power penalty is evaluated at BER of 10^-9 shows that there is a significant impact of crosstalk on the number of wavelengths and input fibers. The results obtained from the present study demonstrate that the crosstalk performance of the proposed topology can be improved significantly than the existing topologies.