High Transmission Enhanced Faraday Rotation in Coupled Resonator Magneto-Optical Waveguides

We propose a novel magneto-optical waveguide configuration consisting of coupled-resonator magneto-optical waveguides to obtain enhanced transmission and Faraday rotation. We show theoretically that such a configuration can enhanced the localization of light and as a result, enhanced Faraday rotation and transmittance simultaneously. The calculations revealed that required optical isolator performance, transmittance 95%, Faraday rotation angle 22.81 degree and large amount of magneto-optical figure of merit, can be fulfilled with our optimized waveguide. Since our investigation showed that the use of optimized one dimensional coupled resonator magneto-optical waveguide with a rotation of half of 45 degree would make it possible to assemble low loss magneto-optical isolators.