OFS' terminators are designed to reduce back-reflections typically found on laser-activated, connectorized access points such as those found on splitters, DWDM's or fiber distributing frames (such as OFS' LGX® System). With the rapid deployment of high-speed optical multiplexers, the possibility of having an un-terminated derived channel or branch increases. Any single fiber connector mated to an adapter or coupling that is unused, is a source of back-reflection. Any source of back-reflection can be a major cause of bit errors. The FC terminator features a plastic ferrule.