| 摘要 |
PURPOSE:To vary a connection point by providing a light emitting element, an optical waveguide, and a diffraction grating, supplying an electric signal and varying an angle of deflection, and converging projection light on a light receiving element on a substrate for reception. CONSTITUTION:The optical deflector 11 consisting of an optical waveguide layer 2, the light emitting element 3, and the diffraction grating 1 formed at the other end side of the layer 2 is provided on a substrate 10 for transmission. Further, a converging lens 12 is arranged above the grating 1 and the substrate 13 for reception is arranged opposite on the focal plane of the lens 12; and a couple of electrodes 4A and 4B are provided across the grating 1 and also connected to a voltage controller 6. Then a voltage applied to the electrodes 4A and 4B is varied to vary the interference relation between light propagated in the layer 2 and the grating 1, and the angle of the projection light 7 to the substrate surface normal is varied to switch light incident on the substrate 13 from a light receiving element 8 to another element 8. Consequently, optical connections between the substrates are changed. |
