New all-optical logic gates based on the local nonlinear Mach-Zehnder interferometer.
We propose new all-optical logic gates containing a local nonlinear Mach-Zehnder interferometer waveguide structure. The light-induced index changes in the Mach-Zehnder waveguide structure make the output signal beam propagate through different nonlinear output waveguides. Based on the output signal beam propagating property, various all-optical logic gates by using the local nonlinear Mach-Zehnder waveguide interferometer structure with two straight control waveguides have been proposed to perform XOR/NXOR, AND/NAND, and OR/NOR logic functions.
Wu
Yaw-Dong
YD
Electronic Engineering of National Kaohsiung University of Applied Sciences, Kaohsiung, 807, Taiwan, ROC. ydwu@cc.kuas.edu.tw
Shih
Tien-Tsorng
TT
Chen
Mao-Hsiung
MH
D003198:Computer Simulation; D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000379:methods*; D008962:Models, Theoretical; D017711:Nonlinear Dynamics; D055095:Optics and Photonics / Q000295:instrumentation*; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*