Open AccessGraphene-assisted nonlinear optical device for four-wave mixing based tunable wavelength conversion of QPSK signal
Author(s) -
Xiao Hu,
Mengqi Zeng,
Andong Wang,
Long Zhu,
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.23.026158
Subject(s) - materials science , four wave mixing , optics , phase shift keying , wavelength , optoelectronics , graphene , energy conversion efficiency , nonlinear optics , bit error rate , physics , telecommunications , laser , computer science , channel (broadcasting) , nanotechnology
We fabricate a nonlinear optical device based on a fiber pigtail cross-section coated with a single-layer graphene grown by chemical vapor deposition (CVD) method. Using such graphene-assisted nonlinear optical device, we experimentally demonstrate tunable wavelength conversion of a 10 Gbaud quadrature phase-shift keying (QPSK) signal by exploiting degenerate four-wave mixing (FWM) progress in graphene. We study the conversion efficiency as functions of the pump power and pump wavelength and evaluate the bit-error rate (BER) performance. The observed optical signal-to-noise ratio (OSNR) penalties for tunable QPSK wavelength conversion are less than 2.2 dB at a BER of 1 × 10(-3).