How does AT&T fiber work full duplex?
Ok, so we just had AT&T Fiber installed today. There is only one fiber wire into the house. Years ago, I worked for a company where we installed the fiber. We had cable installers that would actually install it to the cabinets. Then I would go in and configure the routers and switches to work with the fiber. Those fiber setups had two wires. You had to have two strands because you need one for sending and one for receiving.
I asked him if the fiber was multimode and he said no, it's single mode. So, how in the world, if the light takes up the whole fiber, does it send a signal in both directions on the fiber at the same time?