| 摘要 |
PURPOSE:To provide an optical network capable of handling signals of different transmission speed. CONSTITUTION:Time division multiplexing devices 2-1 to 2-n perform time division multiplexes for plural input signals inputted in parallel in each of input terminals 1-1 to 1-n for equal transmission speed synchronizing with the synchronizing signals with frequencies which are different with each other from synchronizing signal generators 3-1 to 3-n and output time division multiplex signals of the frame frequencies which are different with each other. A wavelength division multiplex is performed for these plural time division signals in a star coupler 5 via electrooptical converters 4-1 to 4-n and optical signals of an arbitrary wavelength are selected by variable wavelength optical filters 6-1 to 6-n. Time division separators 9-1 to 9-n perform time division separation for input time division multiplex signals based on the clock signals of the input time division multiplex signals extracted by clock extracters 8-1 to R-n. |
