How to connect the fiber optic splice filler tube

To connect a fiber optic splice filler tube, slide the tube over the fused fiber joint and heat it to create a rigid, protective seal that safeguards the splice.Step-by-Step Guide1. Prepare the FiberStrip the outer jacket of the fiber cable carefully to expose the loose tubes and the individual fibers, typically leaving about 30–50 mm of bare fiber for splicing .Clean the exposed fiber with an isopropyl alcohol (IPA) swab to remove dust, oils, or moisture .Use a precision cleaver to cut the fiber ends straight; a poor cleave can cause high splice loss or failure . 2. Position the Splice Filler TubeBefore fusion splicing, slide the splice filler tube (also called a heat-shrink splice protector) onto one of the fibers. Ensure the stainless steel strength member inside the tube is aligned with the fiber for added mechanical protection .Keep the tube away from the splice area until the fusion is complete. 3. Fusion SplicingPlace the prepared fibers into the fusion splicer's V-grooves, aligning the cores precisely using the splicer's core alignment system .Start the splicing process. The splicer will generate an electric arc to melt and fuse the fiber ends together, creating a continuous optical path .Inspect the splice for estimated loss; a high-quality singlemode splice should have a loss of 30 mm during handling .Use manufacturer-recommended splice tubes and consumables to ensure long-term reliability .Double-check that the splice filler tube fully covers the joint and is properly heat-shrunk to prevent water ingress or mechanical damage . By following these steps, the fiber optic splice filler tube will provide mechanical strength, environmental protection, and long-term stability for your fiber network.