Open AccessExperimental demonstration on two-input optical high-base hybrid doubling and subtraction functions in graphene
Author(s) -
Andong Wang,
Xiao Hu,
Long Zhu,
Mengqi Zeng,
Lei Fu,
Jian Wang
Publication year - 2015
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.23.031728
Subject(s) - optics , subtraction , signal processing , four wave mixing , optical amplifier , differential phase , computer science , keying , physics , electronic engineering , nonlinear optics , telecommunications , digital signal processing , mathematics , arithmetic , computer hardware , engineering , laser
Optical signal processing is considered to be a promising technique to overcome the speed limitation of electronics and accelerate next-generation high-speed optical networks. Among various optical signal processing operations, optical arithmetic functions have attracted increasing interest. Here, by exploiting the degenerate four-wave mixing progress in graphene and adopting (differential) quadrature phase-shift keying signals, we experimentally demonstrate 10 Gbaud two-input (A, B) hybrid quaternary arithmetic functions of doubling and subtraction (2A-B, 2B-A) in the optical domain. The measured optical signal-to-noise ratio penalties at a bit-error rate of 2 × 10⁻³ are about 7.4 dB for 2A-B and 7 dB for 2B-A.