Patent ID: 6647163
Filing Date: 2003-11-11
Classification: G11C

Abstract:
An optical memory device comprising:an input port for receiving a first optical signal including an intensity of light and a wavelength thereof; a dispersive element for dispersing the first optical signal received at the input port in dependence upon wavelength; a plurality of optical memory elements each comprising a first input port for receiving light dispersed by the dispersive element, a second input port for receiving light with a predetermined wavelength from a light source, an output port, an N-ary wavelength domain O-AND gate for receiving a second optical signal and for modulating light emitted by the continuous source in dependence upon the second optical signal; a feedback path for receiving light from the output port and for feeding back the received light; and a coupler for coupling the light within the feedback path and the light received at the first input port to the modulator as the second optical signal to the modulator, wherein the outputs of the plurality of optical memory elements are optically coupled to the output port of the memory cell for outputting the memorized optical signal of a light intensity and a wavelength.