Types of Optic fiber:

    Fiber comes in many variants based on the usage. The types of fiber varies from 2-96 core fiber.

2 Core fiber:

4 Core fiber. You can see 4 fibers covered

12 core fiber:

12 Core fiber

Datacenter fiber:

Datacenter (server) fiber

Underground Fiber:

Underground fiber must be strong and must be capable of handling much pressure.

They should also be able to carry more bandwidth.

Undersea Optic cable

Optical Repeater Image Courtesy: http://atlantic-cable.com/Article/SA/65/index.htm