| 摘要 |
<p>[PROBLEMS] To provide a new technology of securing sufficient adhesion between a Si layer and a magneto-optic material layer, while avoiding the generation of cracks in the case of fabricating an optical nonreciprocal device by bonding the Si layer with a rib waveguide formed and the magneto-optic material layer. [MEANS FOR SOLVING PROBLEMS] An optical nonreciprocal device is provided with a Si guiding layer that is obtained by forming a rib waveguide in a Si layer on the surface of an SOI substrate, an adhesive buffer layer that is arranged on the Si guiding layer and has a refractive index of 2.8 or higher and lower than the refractive index of the Si guiding layer, and a magneto-optic material layer that is arranged on the adhesive buffer layer to give magnetization in the perpendicular direction to the light propagation direction of the rib waveguide.</p> |
