Open AccessNon-reciprocal polarization rotation using dynamic refractive index modulation
Author(s) -
Jiahui Wang,
Yu Shi,
Shanhui Fan
Publication year - 2020
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.389357
Subject(s) - optics , faraday effect , polarization (electrochemistry) , optical isolator , isolator , refractive index , reciprocal , faraday cage , physics , materials science , optical fiber , electronic engineering , magnetic field , linguistics , chemistry , philosophy , quantum mechanics , engineering
One of the most prominent classes of non-reciprocal devices relies upon the effect of non-reciprocal polarization conversion, such as those observed in Faraday isolators. This effect is usually achieved with the use of magneto-optical materials. Here, we introduce a waveguide type optical isolator based on non-reciprocal polarization conversion, without the use of magneto-optical materials. Our isolator is based on spatial-temporal dynamic refractive index modulation, which is more readily amenable for on-chip integration. We numerically demonstrate our design with both first-principle multi-frequency electromagnetic simulations and the vectorial coupled mode theory formalism.