Fig. 1: Integrated MO modulator.
From: An integrated magneto-optic modulator for cryogenic applications
a, Perspective view of the device (not to scale). The top gold coil is used to apply a radial magnetic field to Ce:YIG underneath, making it non-reciprocal. The silicon microring and silicon waveguide, in the all-pass filter configuration, are visible through the transparent top cladding. b, Cross-section of the microring and electromagnet (not to scale) where the direction of the electrical current and magnetic field are highlighted. c, Optical micrograph of the fabricated sample (top view).
