Abstract: Method and system thereof for transmission of several coherence division multiplexed (CDM) optical signals via one wavelength division multiplexed (WDM) transmission channel of a multichannel WDM telecommunication system to extend the network capacity to a theoretical limit. A broadband optical source generates light within the spectral range of at least one WDM transmission channel. Several CDM channels share this spectral range to transmit and detect phase modulated optical signals through optical fiber links.

Abstract: An optical device for serializing data signals in a plurality of parallel channels is disclosed, including: (a) a plurality of waveguides adapted to conduct light signals of a predetermined wavelength; and (b) a nonlinear optical element having a refractive index and defining an optical path thereon adapted and configured to conduct a control light pulse along the optical path, wherein a portion of each of the plurality of waveguides is adjacent to or in contact with the nonlinear optical element at a different portion along the optical path; wherein the refractive index along the optical path is substantially altered where the control pulse is located such that the relative phase of the light signals of the predetermined wavelength is altered only where the signal is substantially coincident with the control pulse.

Abstract: An optical device for serializing data signals in a plurality of parallel channels is provided, including: (a) a plurality of waveguides adapted to conduct light signals of a predetermined wavelength; and (b) a nonlinear optical element having a refractive index and defining an optical path thereon adapted and configured to conduct a control light pulse along the optical path, wherein a portion of each of the plurality of waveguides is adjacent to or in contact with the nonlinear optical element at a different portion along the optical path; wherein the refractive index along the optical path is substantially altered where the control pulse is located such that the relative phase of the light signals of the predetermined wavelength is altered only where the signal is substantially coincident with the control pulse.