The adoption of fiber as our telecommunications backbone is virtually complete. Every phone call, Internet data packet, and video stream traverses our planet over fiber. The final hurdle before us has been referred to as the “last 100 meters” or “last 100 yards.”

The adoption of fiber optics over this distance was slowed by the previous complexity of fiber optic termination. However, advancements in fiber-optic technology have put the last 100 meters in reach.

There are three primary termination methods:

1. Epoxy/Polish—When people think about terminating fiber, this is generally the method that comes to mind. This way requires numerous steps to prepare the fiber and connector, affix the connector to the fiber, crimp and polish the end face, and inspect the end face upon completion. Due to changes in connector technology, epoxy/polish termination no longer has to be the primary termination method.

2. Fusion Splicing—The most advanced and precarious method for connecting two fibers, akin to arc welding two glass fibers together. Preparation can be time-consuming and sensitive to the elements. The glass becomes brittle at the splice point and must be protected. The overall training and high equipment expense can be prohibitive for inside-premises installations.
3. Mechanical Splice—The oldest form of fiber termination. Early examples were problematic due to excessive light loss if the end faces of the fiber were not cleaved perfectly at zero degrees. Any imperfections would result in situations analogous to misaligned plumbing pipe, with water(light)spraying out while reducing water pressure (light transmission). Today’s technology has vastly improved these connectors. Mechanical splice joints now utilize index matching gel to contain any light that might escape.