Optical waveguide switch
View Patent ↗The present invention provides an optical switch. The switch includes a substrate and a first waveguide holding member. The switch also includes a second waveguide holding member disposed over the substrate and movable relative to the first waveguide holding member to provide a switching function. A movement guiding member is provided for guiding the movement of the second waveguide holding member. A registration element is disposed at the movement guiding member for positioning the second waveguide holding member at a selected location relative to the first waveguide holding member. The selected location is one that provides alignment between a selected waveguide of the first waveguide holding member and a selected waveguide of the second waveguide holding member.
1. An optical switch, comprising:
a substrate having an upper surface;
a first waveguide holding member disposed over the upper substrate surface;
a second waveguide holding member disposed over the upper substrate surface and slidably movable relative to the first waveguide holding member to provide a switching function; and
a movement guiding member disposed between the upper substrate surface and the second waveguide holding member for guiding the movement of the second waveguide holding member, the movement guiding member comprising at least one detent for positioning the second waveguide holding member at a selected location relative to the first waveguide holding member to selectively couple a waveguide of the second waveguide holding member to a waveguide of the first waveguide holding member.
2. An optical switch as recited in claim 1 , wherein the detent is dimensioned to receive a portion of the movement guiding member.
3. An optical switch as recited in claim 1 , wherein the movement guiding member comprises a plurality of registration elements between which the detent is located.
4. An optical switch as recited in claim 3 , wherein the at least one registration element comprises a plurality of adjacent spheres or rods.
5. An optical switch as recited in claim 3 , wherein the movement guiding member comprises a transverse groove in which the at least one registration element is disposed.
6. An optical switch as recited in claim 1 , wherein the movement guiding member comprises a transverse groove in which the detent is disposed.
7. An optical switch as recited in claim 1 , wherein the movement guiding member comprises a positioning member for engagement with the detent.
8. An optical switch as recited in claim 7 , wherein the positioning member is a monolithic part of the second waveguide holding member.
9. An optical switch as recited in claim 7 , wherein the positioning member comprises a sphere disposed within a pit of the second waveguide holding member.
10. An optical switch as recited in claim 7 , wherein the detent is positioned so that movement of the positioning member into registry with the detent selectively couples a waveguide of the second waveguide holding member to a waveguide of the first waveguide holding member.
11. An optical switch as recited in claim 1 , wherein the second waveguide holding member comprises a plurality of fibers disposed in spaced apart relation at a pitch, and the at least one detent comprises a plurality of detents spaced apart from one another at the same pitch as the fibers.
12. An optical switch as recited in claim 1 , wherein the movement guiding member guides the movement of the second waveguide holding member along a direction perpendicular to the optical axis of a fiber retained by the second waveguide holding member.
13. An optical switch as recited in claim 1 , wherein the movement guiding member guides the movement of the second waveguide holding member parallel to the upper substrate surface.