how do they isolate threads of optic fiber in a cable from eachother not to influence on other lines?

Question

I mean as we know the wires in a telephon cable are isolated from eachother by special kind of rubber,not to let the diferent lines effect on eachother,how is this isolation possible in an optical fiber cable used for telecommunications??

Answer 1

Fiber optic cable is designed so that the light that travels inside in totally reflected internally. Theorectically, no light escapes the fiber. The cable is composed of a core and an outside layer. The refractive index of the core is greater than the index for the cladding causing the light inside the cable to reflect when it hits the boundry between the core and the cladding.

Answer 2

The isolation is similar to telephone cable. The fibers themselves are covered in a type of rubber that is thick enough to keep any light from escaping, then they are grouped together in a larger rubber sheath to make a fiber bundle.

Answer 3

Nope my Cable went out someday between 10:00 and midday as we talk. they're sending a Tech out day after today. I already know what got here approximately. The citizens around the corridor from me moved out and had their cable became off, The goobers became off my cable as a replace as our addresses are one selection off from one yet another. My handle ends up in 8 my acquaintances ends up in 9.

Answer 4

Here's a site that has plenty of pictures of different fiber optic cables.
http://www.arcelect.com/fibercable.htm