The S12 Single 1x2 optical switch is a standard 1x2 configuration with 3 fibers and 2 states. See Switch Overview for detailed information common to all Luminos switching products.
The following diagrams show the optical connections for the different states. The numbers identify the fiber endpoints. In state 1, fibers 1 and 3 are connected. In state 2, fibers 1 and 2 are connected.