Open AccessElectro-optic phase matching in a Si photonic crystal slow light modulator using meander-line electrodes
Author(s) -
Yosuke Hinakura,
Yosuke Terada,
Hiroyuki Arai,
Toshihiko Baba
Publication year - 2018
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.26.011538
Subject(s) - optics , materials science , electro optic modulator , phase modulation , modulation (music) , photonic crystal , optical modulator , electrode , optoelectronics , radio frequency , line (geometry) , photonics , phase (matter) , reflection (computer programming) , physics , phase noise , telecommunications , geometry , mathematics , quantum mechanics , computer science , acoustics , programming language
We demonstrate a Si photonic crystal waveguide Mach-Zehnder modulator that incorporates meander-line electrodes to compensate for the phase mismatch between slow light and RF signals. We first employed commonized ground electrodes in the modulator to suppress undesired fluctuations in the electro-optic (EO) response due to coupled slot-line modes of RF signals. Then, we theoretically and experimentally investigated the effect of the phase mismatch on the EO response. We confirmed that meander-line electrodes improve the EO response, particularly in the absence of internal reflection of the RF signals. The cut-off frequency of this device can reach 27 GHz, which allows high-speed modulation up to 50 Gbps.