| 摘要 |
Light is coupled between two or more layers of light guides in an optical chip at a desired connection point by interconnecting the light guides of each layer at the desired connection point using an "optical via". The optical via is located between the light guides being connected in the layer that otherwise operates to insulate the layers containing the light guides. Such an optical via may be made of a material that has an index of refraction that is conducive to optically coupling between the light guides. The geometry of the interconnection at the optical via is arranged so that the light traveling in one of the light guides to reimage itself across the optical via and continue traveling in the other of the light guides.
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