When we talk about fiber-optic transmission, we almost always talk about copper to fiber-optic Ethernet conversion using fiber-optic transceivers.
But since fiber-optic communication is just transmission of any electrical signal in the form of light, I was wondering if there are other transceivers available for fiber-optic transmission, I mean for interfaces/protocols other than Ethernet.
In my search I could not come across any such transceivers. Whenever and wherever I see the word fiber-optic, it is related to Ethernet/networking only.
Any comments are appreciated.