Assymmetric wavelength slicing based dense wavelength division multiplexing

摘要

The present invention discloses an improved wavelength slicing technique for demultiplexing a composite optical signal. The technique applies a method for demultiplexing the composite optical signal for transmitting data signals over a plurality of data channels of different wavelengths represented by &lgr;₁, &lgr;₂, &lgr;₃, &lgr;₄, . . . &lgr;_n where n is a positive integer. The method includes a step a) of receiving the composite optical signal into an asymmetric wavelength slicing device through a device input port. And step b) of slicing the composite signal and extracting a first composite optical signal comprising data signals transmitted in a first set of data channels &lgr;₁, &lgr;_a, &lgr;_b, &lgr;_c, . . . &lgr;_n−1 through a first output port. And, extracting a second composite optical signal comprising data signals transmitted in a second set of data channels &lgr;₂, &lgr;_d, &lgr;_e, &lgr;_f, . . . &lgr;_n through a second output port wherein the second set of data channels is complimentary and asymmetric to the first set of data channels.