Patent ID: 7577363
Filing Date: 2009-08-18
Classification: H04J

Abstract:
1. An optical device comprising: a time-shifting means for inducing time shifts into one or more input signals, wherein the one or more input signals have different optical carrier frequencies; a modulation means for modulating optical power of the one or more input signals, wherein the modulated time-shifted signals have different optical power levels; a multiplexing means for multiplexing the modulated time-shifted signals; a birefringent propagation medium for producing an optical time division multiplexing (OTDM) signal carried by a single wavelength by applying a soliton trapping to induce frequency shifts into the multiplexed modulated time-shifted signal, wherein an amount of the frequency shift introduced to each component of the multiplexed modulated time-shifted signals is in correspondence with the optical power level of that component; and an absorption means for adjusting the optical power of each component of the OTDM signal so that all components have substantially similar optical power levels.