These cables are terminated by splicing on pre-terminated pigtails. Tight tube buffer coating uses a direct extrusion of plastic over fiber. Fiber with a tight tube buffer is able to withstand high impact without breakage but is more sensitive to temperature variation. Tight tube buffer coating is generally used on inside plant cables. Tight tube fiber offers higher impact and crush resistance than loose tube, but it sacrifices bend radius and higher attenuation through temperature cycling.
Breakout cable is a form of tight tube cable.
This construction consists of a layer of Kevlar with a PVC jacket covering the entire package. The single fiber unit is then combined with other similar units and wrapped in a single sheath to form the breakout cable. Breakout cable is the preferred construction for terminating connectors because each fiber acts as its own smaller cable. Another consideration in choosing fiber cabling is safety. Fiber that is run inside just adhere to safety requirements such as fire codes.