Resonant interaction between microwave and optical signals in magnetostatic wave resonating filters

In this paper, the design of a new magneto-optical device based on the resonant interaction between magnetostatic and light waves in a two-port band-pass filter is proposed for potential applications in optical modulation, and its performances are theoretically predicted. The advantages of a microwave resonating filter with respect to delay lines for the magneto-optical interaction are a more compact geometry, owing to the reduced dimensions, an increased optical modes conversion efficiency and the low microwave input power. As a peculiar result on the configuration proposed, the device allows for a possible interaction between light and microwave signals when surface magnetostatic waves are excited.