What are the physics behind telephones and fiber optics?

Answer 1

Fiber optics:
Reslults of the geometric optic, and the use of the total reflection of waves.

telephon:
works because of Electrical engineering, the long way from eletrostatics to electromatgnetic waves.

Answer 2

The advantages of fibre is that it is not affected by ElectroMagnetic Interference, the way that copper wire is affected. Usually fibre has a lower error rate than will copper cable, that is not to say that some fibre installations are not prone to errors, just that they tend to perform better. But as someone said the network infrastructure also plays a role in your performance. The last part that plays a role is the wiring inside the house, that can be a major problem with copper as many people do not understand the importance of their house wiring and the installation of the fibre and the devices usually means that new house wiring is installed. If the connections to the telephone lines had been inspected and problems corrected, then the response may have improved drastically. As a couple of people say, they had much better service with fibre than they did with copper cable connections. You may experience the same. But I also know of people who have fibre and are very unhappy with their service. You may experience the same. I would suggest that you talk to neighbours that have fibre and get their impression, then you will know how it works in your neighbourhood. Good luck.

Answer 3

telphone lines is pretty simple its just electrical signals going though the line and when you pick up the phone, the electrical component is changed from electrical to audio
fiber optics uses total internal reflection to bounce light waves through the fiber optic line. when it reaches its destination, it will be changed from light to electrical signals and then maybe to audio through a speaker