Blocking in Multiwavelength TDM

This paper examines the relative importance of wavelength conversion and time-slot interchange in improving the performance of multiwavelength time-division mul-tiplexed networks. It is shown that, in networks with a small number of wavelengths, each carrying a large number of time-division multiplexed channels, signiicant performance improvements are achieved by the introduction of time-slot interchange alone, without wavelength conversion. However, some performance improvements are also achieved by the introduction of wavelength conversion alone.