Photnics?

[Rish_007]

I need help understanding this question and what it is exactly asking.

Transfer of analog information(such as the time variation of a voltage signal) can be achieved using a carrier wave. Explain the role of the carrier wave in such processes.

[LazyZombie]

Do you understand modulation? (Well the vague understanding of modulation we're supposed to have in vce physics anyway)

So:
-The carrier wave acts as a 'piggyback' for the signal wave.
-The carrier wave has high frequency and more energy, so by superimposing the signal wave and carrier wave together there will be less absorption of the signal - so there would be less noise.

Is what I would write.