Patent ID: 7174104

Claim:
A transmitting apparatus using a multiple lambda source in a WDM network, the transmitting apparatus comprising: a multiple lambda source providing a signal output with multiple wavelengths, the signal output carries no information; a first optical circulator connected to the multiple lambda source, the first optical circulator transfers the signal with multiple wavelengths transmitted from the multiple lambda source within said transmitting apparatus a multiplexer/demultiplexer connected to the first optical circulator, said multiplexer/demultiplexer receives the transferred signal with multiple wavelengths from the multiple lambda source via the first optical circulator, demultiplexes the multiple wavelength optical signal and multiplexes optical signals of each wavelength on which information is loaded; an optical space switch connected with the multiplexer/demultiplexer for line-distributing demultiplexed signals from the multiplexer/demultiplexer to a channelization module according to each wavelength of the demultiplexed signals, and for transferring optical signals from the channelization module to the multiplexer/demultiplexer; and the channelization module includes a modulated line having distributed optical signals from the optical space switch so as to generate modulated optical signals, and for transferring the modulated optical signals to the optical space switch.