Title :
PPLN-based all-optical 40 Gbit/s three-input logic AND gate for both NRZ and RZ signals
Author :
Wang, J. ; Sun, J. ; Zhang, X. ; Huang, D.
Author_Institution :
Huazhong Univ. of Sci. & Technol., Wuhan
Abstract :
Reported is an all-optical high-speed three-input logic AND gate using cascaded sum- and difference-frequency generation (cSFG/DFG) in a periodically poled lithium niobate (PPLN) waveguide. The converted idler wave via cSFG/DFG carries the AND result of the three-input signals. PPLN-based 40 Gbit/s three-input logic AND operations for both non-return-to-zero (NRZ) and return-to-zero (RZ) signals are successfully demonstrated in the experiment.
Keywords :
lithium compounds; logic gates; optical frequency conversion; optical logic; optical waveguides; NRZ signals; PPLN waveguide; all-optical logic AND gate; bit rate 40 Gbit/s; cascaded sum-frequency generation; difference-frequency generation; non-return-to-zero signals; periodically poled lithium niobate waveguide; three-input signals;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20080014
