Open AccessGraphene-silicon microring resonator enhanced all-optical up and down wavelength conversion of QPSK signal
Author(s) -
Xiao Hu,
Yun Long,
Mengxi Ji,
Andong Wang,
Long Zhu,
Zhengsen Ruan,
Yi Wang,
Jian Wang
Publication year - 2016
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.24.007168
Subject(s) - optics , resonator , four wave mixing , materials science , phase shift keying , energy conversion efficiency , wavelength , optoelectronics , bit error rate , nonlinear optics , physics , telecommunications , laser , computer science , channel (broadcasting)
We fabricate a nonlinear optical device based on graphene-silicon microring resonator (GSMR). Using such graphene-assisted nonlinear optical device, we experimentally demonstrate up and down wavelength conversion of a 10-Gbaud quadrature phase-shift keying (QPSK) signal by exploiting degenerate four-wave mixing (FWM) progress in the fabricated GSMR. We study the conversion efficiency as a function of the pump power. In addition, the resonant wavelength of GSMR is tuned by changing the temperature from 20°C to 40°C. We evaluate the bit-error rate (BER) performance for up and down wavelength conversion. The observed optical signal-to-noise ratio (OSNR) penalties for QPSK up and down wavelength conversion are less than 1.4 dB at a BER of 1 × 10 -3 . The BER performance as a function of the pump power for up wavelength conversion is also assessed. The minimum OSNR penalty is less than 0.8 dB when the pump power is 13.3 dBm.