Title :
All-Optical Full-Adder Based on Cascaded PPLN Waveguides
Author :
Shen, Jing ; Yu, Song ; Liao, Ping ; Chen, Zhixiao ; Gu, Wanyi ; Guo, Hong
Author_Institution :
State Key Lab. of Inf. Photonics & Opt. Commun., Beijing Univ. of Posts & Telecommun., Beijing, China
Abstract :
An all-optical full-adder is proposed based on cascaded second-order nonlinearities of sum-frequency generation and difference-frequency generation in quasi-phase-matched periodically poled lithium niobate (PPLN) waveguides. By utilizing the logic functions of PPLN waveguides, a configuration based on cascaded PPLN waveguides is designed to achieve the all-optical full-adder. The waveforms, eye diagrams, extinction ratio, pulse width, and peak power delay of the signals in the all-optical full-adder are calculated and discussed numerically. The results demonstrate that the logic function of full-adder can be achieved well by this configuration, which has important significance for all-optical digital signal processing.
Keywords :
adders; nonlinear optics; optical logic; optical waveguides; signal processing; PPLN waveguides; all-optical digital signal processing; all-optical full-adder; cascaded second-order nonlinearities; difference-frequency generation; extinction ratio; eye diagrams; logic functions; peak power delay; pulse width; quasi-phase-matched periodically poled lithium niobate waveguides; sum-frequency generation; Logic functions; Logic gates; Nonlinear optics; Optical pulses; Optical signal processing; Optical waveguides; Optical wavelength conversion; All-optical signal processing; difference-frequency generation; full-adder; optical digital signal processing; periodically poled lithium niobate; quasi-phase matching; sum-frequency generation;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2011.2161269
