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All-optical switch consisting of multimode interferometer combined with metamaterials: Device design

We demonstrated magnetically excited magnetic resonances with negative magnetic permeability in InP-based optical waveguide with an array of gold split-ring resonators (SRRs). In transmission characteristics of the device, an incident-polarization-dependent absorption feature was clearly observed at 1575 nm. The experimental results show that the SRR array interacted with the magnetic field of the propagating light in the device, producing magnetic resonance at optical frequencies.