Thermo-optical switch

G - Physics – 02 – F

Patent

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Details

G02F 1/01 (2006.01) G02B 6/13 (2006.01) G02F 1/313 (2006.01) G02B 6/12 (2006.01) G02F 1/065 (2006.01)

Patent

CA 2241828

For reducing power consumption and cross-talk in the transmission of broadband optical signals without prior conversion into electrical signals there are provided in a thermo-optical switch two waveguides (WL1 and WL2) extending closely adjacent each other over their interactive length the width of which is at least partially covered by one or two pairs of lamellate electrode arms of a heating electrode (E), the arms of each pair being interconnected by a common web (G) and being of similar geometric shape as the waveguides (WL1 and WL2) positioned below them. Furthermore, means is provided for changing and/or setting the thermal and/or geometric symmetry/asymmetry of the refractive indices in the two waveguides.

Pour réduire la puissance consommée et la diaphonie, lors de la transmission de signaux optiques à large bande sans conversion préalable en signaux électriques, dans un commutateur thermo-optique, deux guides d'ondes (WL1 et WL2) s'étendant l'un à côté de l'autre de façon très rapprochée sur leur longueur d'interaction (L) sont au moins partiellement recouverts, sur leur largeur, par au moins une paire de bras en forme de lamelles de l'électrode de chauffage (E), reliés par une pièce jointive (G) commune. La forme de ces bras d'électrode correspond à la géométrie des guides d'ondes (WL1 et WL2) se trouvant en-dessous et au moins un bras d'électrode d'une paire de bras d'électrode est attaqué électriquement.

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