Optical functional circuit

G - Physics – 02 – B

Patent

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G02B 6/122 (2006.01) G02B 6/26 (2006.01)

Patent

CA 2552417

The present invention provides an optical functional circuit where a holographic wave propagation medium is applied and a circuit property is excellent such as small transmission loss and crosstalk. The optical functional circuit where a plurality of circuit elements are formed on a substrate includes the wave propagation medium for converting an optical path of a leakage light so that the leakage light that is not emitted from a predetermined output port of the circuit element is not coupled to a different circuit element. This wave propagation medium is constituted by an optical waveguide that is provided with a clad layer formed on the substrate and a core embedded in the clad layer, and a part of the optical waveguide is formed in accordance with a refractive index distribution which is multiple scattered.

Un circuit fonctionnel optique pouvant présenter d'excellentes caractéristiques de circuit de faible perte de transmission et de petit écho magnétique en appliquant un support de transmission d'onde holographique. Le circuit fonctionnel optique comporte une pluralité d'éléments de circuit formés sur un substrat et est doté d'un support de transmission d'onde pour changer le trajet optique d'une lumière de fuite, qui n'est pas émise à partir un port de sortie prédéterminé des éléments du circuit, de sorte que la lumière de fuite peut ne pas être couplée à un autre élément de circuit. Ce support de transmission d'onde est composé d'un guide d'onde optique, qui est composé d'une couche de métallisation formée sur le substrat et d'un noyau enterré dans la couche de métallisation, et le guide d'onde optique est partiellement formé pour avoir une répartition de l'indice de réfraction pour de multiples diffusions.

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