[myinitialsaredac]

That may be a stupid question but I am asking out of curiosity whether or not light needs a dielectric.

I'm assuming the battery to the red LED has a dielectric but I am speaking of the cable itself.

So, do toslink cables have dielectrics?

Dave

 

[krmathis]

Doubtful.
From what I know both plastic and glass are very poor electric transporters.

 

[myinitialsaredac]

That was my understanding also, that they only transmitted light so no need for a dielectric.

Dave

 

[finoyvoy]

Electricity doesn't flow through a fiberoptic cable.

 

[Tridacnid]

Yep, no electricity.