| 摘要 |
An optical functional circuit enabled to have excellent circuit characteristics of a low transmission loss and small crosstalk by applying a holographic wave transmission medium. The optical functional circuit has a plurality of circuit elements formed on a substrate and is provided with a wave transmission medium for changing the optical path of a leakage light, which is not emitted from a predetermined output port of the circuit elements, so that the leakage light may not be coupled to another circuit element. This wave transmission medium is configured of an optical waveguide, which is composed of a cladding layer formed on the substrate and a core buried in the cladding layer, and the optical waveguide is partially formed to have a refractive index distribution for multiple scatterings.
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