Preparation Method for Steel Strand Optical Cable Splicing

Splicing a steel strand optical cable involves carefully weaving the steel strands to form a secure joint while ensuring the optical fibers remain intact and properly aligned for signal transmission.OverviewSteel strand optical cables, often used in aerial installations, combine steel messenger strands for mechanical support with fiber optic cores for data transmission. Splicing these cables requires attention to both the structural integrity of the steel strands and the optical performance of the fibers. The process ensures a strong, load-bearing connection while maintaining minimal signal loss.Step 1: Prepare the CableInspect the cable for damage and determine the splice location.Strip the outer jacket carefully to expose the steel strands without damaging the optical fibers inside.Clean the fibers and steel strands to remove dirt, grease, or corrosion. For steel strands, check for zinc or zinc-aluminum coatings to prevent rust .Step 2: Form the Eye (Optional for Loops)Bend the cable back on itself to form the desired loop or eye.Temporarily secure the eye with a clamp or tape to hold it in place during splicing .Step 3: Weave the Steel StrandsSelect a center strand and tuck it under the nearest strand of the standing part of the cable.Continue tucking each strand over one and under one around the cable, following the original lay.Perform at least three to five full tucks per strand to ensure strength. More tucks increase the splice's load-bearing capacity .Optionally, taper the splice by trimming and tucking remaining portions for a smooth transition.Step 4: Secure the EndsSeize the ends of the strands with serving twine or wire to prevent unraveling.Gently tap the splice with a hammer to set the strands evenly and maintain symmetry .Step 5: Handle the Optical FibersCarefully extract the fiber optic cores from the steel strand bundle.Perform fiber optic splicing using either fusion splicing (permanent, low-loss) or mechanical splicing (quick, temporary) depending on the application .Ensure proper alignment and minimal bending to avoid signal attenuation.Protect the spliced fibers with splice trays or protective sleeves.Step 6: Reassemble and Lash (for Aerial Installations)If the cable is part of an aerial installation, lash the spliced cable back to the messenger strand using a lasher tool.Maintain appropriate tension and sag to prevent mechanical stress on the splice .Verify ground clearances and environmental protection, especially in corrosive or coastal areas .Best PracticesAlways wear protective gloves and eye protection when handling steel strands.Use precision tools for fiber splicing to minimize signal loss.Check tension limits and sag calculations to ensure the splice can withstand environmental loads.Inspect the splice visually and, if possible, test the optical signal to confirm minimal attenuation. By following these steps, a steel strand optical cable splice can achieve high mechanical strength and reliable optical performance, suitable for long-term aerial or messenger-supported installations.