Open AccessSilicon optical modulator with shield coplanar waveguide electrodes
Author(s) -
Xiaoguang Tu,
Ka-Fai Chang,
Tsung-Yang Liow,
Junfeng Song,
Xianshu Luo,
Litao Jia,
FengLing Qing,
Mingbin Yu,
GuoQiang Lo,
Po Dong,
Young-Kai Chen
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.22.023724
Subject(s) - materials science , optics , coplanar waveguide , extinction ratio , optoelectronics , bandwidth (computing) , electrode , electro optic modulator , optical carrier transmission rates , optical modulator , interferometry , phase modulation , microwave , physics , telecommunications , optical fiber , wavelength , phase noise , radio over fiber , quantum mechanics , computer science
A silicon Mach-Zehnder Interferometer (MZI) optical modulator with a shield coplanar waveguide (CPW) transmission line electrode design was demonstrated. This shield-CPW electrode suppresses the signal distortion caused by the parasitic slot-line (SL) mode and improves the electrical bandwidth and the electro-optical (EO) bandwidth. With the shield-CPW electrodes and 5.5 mm-long phase shifters, the silicon MZI optical modulator delivered an EO bandwidth of above 24 GHz and a V (π) = 3.0 V was achieved at λ = 1310 nm. When modulated at 28-Gb/s data rate, it achieved an extinction ratio of 5.66 dB under a driving voltage of V (pp) = 1.3 V, corresponding to a power consumption of 0.8 pJ/bit.