Modern high-speed internet uses light to quickly and reliably transmit large amounts of data through fiber-optic cables, but currently, light signals hit a bottleneck when data processing is necessary. For that, they must convert into electrical signals for processing before further transmission.
Someone please correct me if I’m wrong, but I don’t think this article is talking about a network switch, I think it’s talking about a logic gate switch.
It is, it confused me too. It is refering to an optical only on/off switch which can also be used as an xor gate. Many levels down from a network switch.