Open AccessOptically-controlled high-speed terahertz wave modulator based on nonlinear photonic crystals
Author(s) -
Heming Chen,
Jian Su,
Jingli Wang,
Xinyan Zhao
Publication year - 2011
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.19.003599
Subject(s) - terahertz radiation , modulation (music) , optics , materials science , photonics , optoelectronics , optical modulator , electro optic modulator , photonic crystal , nonlinear optics , phase modulation , terahertz spectroscopy and technology , nonlinear system , physics , laser , acoustics , phase noise , quantum mechanics
An optically-controlled terahertz (THz) modulator based on nonlinear photonic crystals (PCs) is proposed, which has the merits of high speed, compactness and easy integration. The PC structure consists of point and line defects. High speed modulation of THz wave can be realized by filling one of the point defects with organic polymer polyaniline which has rapid nonlinear response time. Simulation results show that the modulation rate, modulation depth and insertion loss of the modulator achieve 2.5 GHz, 20.3 dB and 1.02 dB, respectively.