Open AccessReconfigurable linear combination of phase-and-amplitude coded optical signals
Author(s) -
Yvan Paquot,
Jochen Schröder,
Benjamin J. Eggleton
Publication year - 2014
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.22.002609
Subject(s) - optics , fourier transform , amplitude , computer science , distortion (music) , signal processing , subtraction , compensation (psychology) , phase (matter) , physics , digital signal processing , mathematics , telecommunications , amplifier , computer hardware , bandwidth (computing) , psychology , arithmetic , quantum mechanics , psychoanalysis
We introduce an all-optical arithmetic unit operating a weighted addition and subtraction between multiple phase-and-amplitude coded signals. The scheme corresponds to calculating the field dot-product of frequency channels with a static vector of coefficients. The system is reconfigurable and format transparent. It is based on Fourier-domain processing and multiple simultaneous four-wave mixing processes inside a single nonlinear element. We demonstrate the device with up to three channels at 40 Gb/s and evaluate its efficiency by measuring the bit-error-rate of a distortion compensation operation between two signals.