Optical switches and logic gates employing same

G - Physics – 02 – B

Patent

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G02B 26/08 (2006.01) G02B 6/35 (2006.01)

Patent

CA 2683730

An optical switch including a light passageway having a changeable cross-sectional area, an activation light responsive piezoelectric element associated with the light passageway, the activation light responsive piezoelectric element being operative to change its shape in response to activation light impinging thereon and a conductive element operatively associated with the piezoelectric element for enhancing activation light responsiveness thereof, the activation light responsive piezoelectric element being associated with the light passageway and being operative such that changes in the shape of the piezoelectric element cause changes in the changeable cross-sectional area of the light passageway sufficient to govern the passage of light along the light passageway. Logic gates and logic functionality employing an optical switch are also described.

L'invention concerne un commutateur optique qui comprend un conduit de lumière dont la section transversale peut être modifiée, un élément piézoélectrique sensible à une lumière d'activation et associé au conduit de lumière, cet élément pouvant être actionné de manière à modifier sa forme lorsqu'il est frappé par la lumière d'activation, et un élément conducteur associé exploitable à l'élément piézoélectrique en vue de renforcer la sensibilité de celui-ci à la lumière d'activation. L'élément piézoélectrique est associé au conduit de lumière et peut être actionné de sorte que les modifications de la forme de cet élément entraînent des modifications suffisantes de la section transversale modifiable du conduit de lumière pour commander le passage de lumière dans ledit conduit. Des portes logiques et une fonctionnalité logique utilisant un commutateur optique sont également décrites.

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