Title :
All-optical multiple logic gates with XOR, NOR, OR, and NAND functions using parallel SOA-MZI structures: theory and experiment
Author :
Kim, Joo-Youp ; Kang, Jeung-Mo ; Kim, Tae-Young ; Han, Sang-Kook
Author_Institution :
Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul
Abstract :
The authors have proposed, simulated, and experimentally demonstrated all-optical multiple logic gates using two parallel semiconductor optical amplifier (SOA)-Mach-Zehnder interferometer (MZI) structures that enable simultaneous operations of various logic functions of XOR, NOR, OR, and NAND. The proposed scheme, which is optimized by adjusting the optical gain and phase differences in SOA-MZI structures with creative and systematic method, has great merits to achieve the reshaped output pulses with high extinction ratio and enable the high-speed operation at over 10 Gb/s through performance enhancement of SOAs. Its validity is confirmed through simulation and experiments at 2.5 and 10 Gb/s, respectively
Keywords :
Mach-Zehnder interferometers; high-speed optical techniques; logic gates; optical communication equipment; optical fibre communication; optical logic; semiconductor optical amplifiers; 10 Gbit/s; 2.5 Gbit/s; Mach-Zehnder interferometer; NAND function; NOR function; OR function; XOR function; all-optical logic gates; extinction ratio; high-speed operation; logic functions; multiple logic gates; optical gain; phase differences; reshaped pulses; semiconductor optical amplifier; High speed optical techniques; Logic functions; Logic gates; Optical interferometry; Optical pulses; Optimization methods; Performance gain; Pulse amplifiers; Semiconductor optical amplifiers; Stimulated emission; All-optical logic gate; Mach–Zehnder interferometer (MZI); NAND; NOR; OR; XOR; semiconductor optical amplifier (SOA);
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2006.880593
