Optical switch having angle tuning elements and multiple-fiber collimators
View Patent ↗An optical switch with a compact form factor includes a multiple-fiber collimator and an angle tuning element for deflecting an optical beam from an input fiber into one of at least two output fibers. The angle tuning element may be provided between a pair of coaxially-aligned collimators, one of which is the multiple-fiber collimator. Alternatively, the angle tuning element may be provided between the multiple-fiber collimator and a reflective surface, so that only one collimator is required and the optical switch may be designed to have its input and output ports on the same side.
1. An optical switch comprising:
a first collimator having a center axis aligned with an optical axis of the optical switch;
a second collimator having a center axis aligned with the optical axis of the optical switch; and
an angle tuning element between the first and second collimators for deflecting an optical beam output from the first collimator into the second collimator, wherein the angle tuning element is movable between a first position, where a first section of the angle tuning element deflects the optical beam into a first path, and a second position, where a second section of the angle tuning element deflects the optical beam into a second path, and wherein at least one of the first and second collimators is a multiple-fiber collimator.
2. The optical switch according to claim 1 , wherein the second collimator comprises at least two ports, a first fiber corresponding to a first one of the at least two ports, and a second fiber corresponding to a second one of the at least two ports, and wherein the optical beam, when deflected into the first path, couples into the first fiber, and the optical beam, when deflected into the second path, couples into the second fiber.
3. The optical switch according to claim 1 , wherein the first and second sections of the angle tuning element are configured to deflect the optical beam in different directions but by substantially the same angle.
4. The optical switch according to claim 1 , wherein the angle tuning element deflects another optical beam output from the first collimator into the second collimator.
5. The optical switch according to claim 1 , wherein the first and second collimators have a different number of ports.
6. The optical switch according to claim 1 , wherein the angle tuning element is movable between the first position and the second position in a linear manner.