WD&MMT switching networks in combination with photonic and electronic switching technique

New photonic and electronic hybrid switching networks, wavelength division and memory matrix time (WD&MMT) switching networks, which are constructed from a combination of photonic wavelength-division switching and electronic memory matrix time switching techniques, are proposed. The WD&MMT switching networks can be used to construct large line-capacity switching networks with a small amount of hardware, because of their very large total multiplexity given by the product of wavelength-division, time-division, and space-division multiplexity. Growable WD&MMT switching network structures, which can increase the hardware in proportion to the required line-capacity, are also presented