How Fiber Optic Cables Work

A fiber optic cable consists of one or more strands of glass, each only slightly thicker than a human hair.

There are 2 Types

  • Single Mode: Thinner but Glass Core, Long Distance, More expensive and more Bandwith. It’s normally 9/125 Microns
  • Multi-Mode: (Either Aqua or Orange color)Thicker but Plastic Core, Shorter Distance, Cheaper with lower Bandwidth. It’s normally 50/125 Microns

Each Fiber cables have 3 elements of which is consists of :

It’s Calculated in Microns: Millionth of a meter and measures as Core/Cladding. i.e 50/125 of Multimode

  • Core : Center of each strand.  provides the pathway for light to travel
  • Cladding: The core is surrounded by a layer of glass called cladding that reflects light inward to avoid loss of signals
  • Jacket – Buffer. The outer layer of the cable.

Only Connect: A guide to fiber optics

Fiber Optic cable has a pair of connectors on each end. Each of these is to Send/Recieve on each end.

Generally, you will use SFP connectors on Switch or routers to connect Fibers. Small Form-Factor Pluggable (SFP) is a compact as shown below, hot-pluggable network interface module used for both telecommunication and data communications applications. Cisco SFP + transceiver Module - 10 Gigabit Ethernet ...

  • You can also make Pre-made DAC Cable (Direct Attach Copper) SFP which is connected with Filber cable along with SFP cables.

Given Below are the Types of Fiber optics connectors. 

16 Types of Fiber Optic Connectors to Choose From | Home