Optical switch having switch cells with movable switch mirrors

Details Optical switch having switch cells with movable switch mirrors Optical switch having switch cells with movable switch mirrors

2005-06-14

2005-06-14

Prasad, Chandrika (Department: 2839)

Optical waveguides

With optical coupler

Switch

Reexamination Certificate

active

06907154

ABSTRACT:
An optical switch having a plurality of switch cells. The optical switch has n inputs (n is a natural number) and m outputs (m is a natural number). The optical switch has a unit size defined as the distance between any two adjacent ones of the switch cells. The optical switch comprises a substrate having a switch size of K×L (K is an integer satisfying n≦K, and L is an integer satisfying m≦L), first and second mirrors parallel to each other and perpendicular to a principal surface of the substrate, and an optical unit providing a plurality of input optical paths for the n inputs and a plurality of output optical paths for the m outputs. The plurality of input optical paths are inclined relative to the first and second mirrors, and the plurality of output optical paths are inclined relative to the first and second mirrors. Each switch cell comprises a switch mirror provided movably relative to the substrate. With this configuration, the path dependence of loss is substantially eliminated.

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L.Y. Lin et al. “Free-Space Micromachined Optical Switches with Submillisecond Switching Time for Large-Scale Optical Crossconnects.” IEEE Photonics Technology Letters. vol. 10. No. 4. Apr. 1998. pp. 525-527.

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