Enhanced magneto-optical response with a 1D resonant grating for sensing applications

Significant enhancement of the longitudinal magneto-optical effect accompanied with high transmission was demonstrated by experimental measurements and confirmed by numerical simulations for small angles of incidence. The work was led with a subwavelength resonant structure consisting of a 1D dielectric grating structured on top of a magneto-optical waveguide. The simplicity of the fabricated structure associated to the significant achieved magneto-optical effect, make the structure a promising tool for applications like magnetic field sensors or in non-destructive testing.