Why is optical audio so slow?
I’m new to setting up home theater, but have a background in data network engineering.
The home setup I’m building has my AVR separated from my TV. Instead of going with eARC, I thought I could use optical fiber to get audio from devices directly connected to my tv back to the AVR...until I learned that was a no-go for Atmos.
This was very surprising because I have always associated fiber with superior bandwidth, speed, and distance. Why doesn’t the same hold for optical audio? Furthermore, why isn’t optical the default for high speed/high bandwidth use cases in the AVR world? From what I’ve read, optical audio is slowly dying. Why does this industry want to stick with copper transport over fiber?