| 摘要 |
An optical waveguide device comprises an input waveguide for converting incident light into a single optical mode, a plurality of output waveguides for splitting power of incident light and outputting it, and a tapered waveguide for connecting the input waveguide and the output waveguides, gradually increasing in width from the input waveguide toward the output waveguides, and the tapered waveguide has a non-adiabatic state, that is, a sufficiently large taper angle such that lower order optical modes couple into higher order optical modes while light propagates along the tapered waveguide.
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