| 摘要 |
PURPOSE:To operate totally the principal part of logical arithmetic with light and to perform extremely fast operation at room temperature by employing specific constitution for an input and an output optical wave guide, etc. CONSTITUTION:Two arms 3 and 4 have the same nonlinear refractive index. One-side terminals of arms 3 and 4 are connected to a guide 1 for input so that an Y-shaped branching path 5 is formed together with the input guide 1, and the otherside terminals are connected to a guide 2 for output so that an Y-shaped coupling part 6 is formed together with the optical wave guide 2. Consequently, the power of light from the guide 1 is divided into two through the branching part 5 and coupled completely through the coupling part 6. All the light guides are single-mode optical wave guides having cores and clads covering the clads and made of materials which vary in refractive index with the intensity of propagating light. In this case, only either of the core and clad as constituent parts of the optical wave guide may have a nonlinear refractive index. An electrode 7 applies an electric field into one arm 4. |
