| 摘要 |
The wavelength router comprises two flat waveguides, and these flat waveguides are connected by connecting waveguides. In each flat waveguide, optical path converters are created at connecting sections with the connecting waveguides. The optical path converters convert the light propagation direction in the flat waveguide to the light propagation direction in the connecting waveguides, or performs inverted conversion of this conversion. By this configuration, a compact element with a high wavelength resolution can be implemented.
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