Patent ID: 6804047
Filing Date: 2004-10-12
Classification: G02F,H01S

Abstract:
A device embodied for all-optical OR logic operation comprising;an optical pulse generator; a mode-locked fiber laser (MLFL) for generating input signal patterns A and B for all-optical OR logic operation from said pulse generator; the first fiber coupler (FC1) for branching the optical output from said mode-locked fiber laser by branching ratio of 50:50; the first optical delay means for time-delaying the optical output from the said first fiber coupler; the first optical control means for controlling the intensity and the polarization of the optical output from the said first fiber coupler; the second fiber coupler (FC2) for generating the input signal pattern A by coupling optical outputs from the said first delay means and the first optical control means; the third fiber coupler (FC3) for branching the optical output from the said second fiber coupler by branching ratio of 10:90; the second delay means for time-delaying the optical output from the said second fiber coupler (FC2); the fourth fiber coupler (FC4) for detecting the optical output from the said second delay means and measuring the input signal pattern B; the second optical control means for controlling the intensity and the polarization of the optical output from the said third fiber coupler (FC3); the fifth fiber coupler (FC5) for generating the input signal pattern A+B by coupling the input signal pattern A from the said third fiber coupler and the input signal pattern B from the said fourth fiber coupler; and means for detecting and measuring the input signal pattern A+B generated from the said fifth fiber coupler.