Tools, Equipment and Safety in Fiber Splicing Work
Tools, Equipment and Safety in Fiber Splicing Work
This domain tests correct tool selection, handling of bare fiber, laser safety and routine care of a fusion splicer. The exam expects practical choices, not a list of every tool in a catalogue.
Core rules and concepts
- A Miller stripper removes 250 µm coating without nicking the 125 µm glass. A jacket stripper or cable sheath knife opens the outer jacket; side-cutters trim strength members. Cleavers score and break the fiber squarely.
- A fusion splicer aligns and arcs fibers; a mechanical splice uses a V-groove and index-matching gel. An OTDR tests loss and events; an optical power meter measures absolute power; a VFL finds breaks and confirms continuity.
- Clean with 99% isopropyl alcohol and lint-free wipes. Clean the cleaver blade and splicer V-grooves; replace electrodes on schedule. Keep protective caps on connectors.
- Never look into a live fiber or connector. Treat dark fiber as live until tested. Wear safety glasses when cleaving and dispose of fiber offcuts in a sharps container, not in normal waste.
Worked example
You must strip the 250 µm coating from a single-mode fiber for fusion splicing. Choose a Miller stripper with the correct hole, not electrician pliers. Wipe the bare fiber with alcohol, cleave it to the splicer's stated length, and inspect the end face. Pliers crush the glass and leave a bad end; a cleaver alone cannot remove the coating cleanly.
Traps that cost marks
Do not use scissors or a knife on the glass. Do not touch the cleaved end or re-clean it with a dry tissue. Do not open the splicer wind cover during the arc. Do not assume a low-cost VFL proves a splice is good; it only shows continuity.