Open AccessControl of slow-light effect in a metamaterial-loaded Si waveguide
Author(s) -
Makoto Tanaka,
Tomohiro Amemiya,
Hibiki Kagami,
Nobuhiko Nishiyama,
Shigehisa Arai
Publication year - 2020
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.389996
Subject(s) - metamaterial , slow light , optics , wavelength , ray , refractive index , permittivity , materials science , waveguide , photonic metamaterial , optoelectronics , physics , dielectric , photonic crystal
A metamaterial is an artificial material designed to control the electric permittivity and magnetic permeability freely beyond naturally existing values. A promising application is a slow-light device realized using a combination of optical waveguides and metamaterials. This paper proposes a method to dynamically control the slow-light effect in a metamaterial-loaded Si waveguide. In this method, the slow-light effect (i.e., group index) is controlled by changing the phase of the control light incident on the device from a direction opposite to that of the signal light. The group index of the device could be continuously controlled from 63.6 to 4.2 at a wavelength of 1.55 µm.