How long does it take for a signal in fiber to go from point a to point b? Is it at close to the speed of light? And what is the package lost pr meter?

Question

a_clan · Answer

It depends upon the data rate supported by medium (fiber). Different media have different rates.
In optical fiber, it may be close to speed of light but the medium is not continuous and the signals go through intervening devices like amplifiers. So, the actual speed should be much less than the speed of light.
There is no such packet lost per meter, but the energy dissipation and interference do result in loss of the strength of signal, which again varies from medium to medium and location to location.

unklerhaukus · Answer

consider the refractive index of the medium transversed