Independently tunable transmission-type magneto-optical isolators based on multilayers containing magnetic materials

We investigate the magneto-optical (MO) properties of multilayers containing several magnetic defects. Our numerical simulations show that each MO defect mode can be tuned independently by adjusting the structural parameters of magnetic materials. In addition, giant Faraday rotation can be obtained. Our results indicate that the structure may have potential applications for independently tunable multichannel MO isolators. -- Highlights: → We study the magneto-optical properties of magnetic multilayers. → Each MO defect mode can be tuned independently. → Giant Faraday rotation can be obtained. → We can design independently tunable multichannel MO isolators.