Open AccessAll-optical half adder using an SOA and a PPLN waveguide for signal processing in optical networks
Author(s) -
Saurabh Kumar,
Alan E. Willner,
Deniz Gurkan,
K.R. Parameswaran,
M. M. Fejer
Publication year - 2006
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.14.010255
Subject(s) - lithium niobate , optical amplifier , adder , xor gate , optics , waveguide , signal (programming language) , modulation (music) , signal processing , optical switch , computer science , optoelectronics , materials science , physics , logic gate , digital signal processing , laser , cmos , algorithm , computer hardware , acoustics , programming language
We demonstrate an all-optical half adder for bit-wise addition of two serial data streams that simultaneously generates Sum and Carry outputs. The module performs the required XOR and AND operations using only two nonlinear optical elements. Difference Frequency Generation in a periodically poled lithium niobate waveguide serves as the AND gate and cross-gain modulation in a semiconductor optical amplifier is employed to generate the XOR output. Error free operation for RZ data is reported.