Making Armored Optical Cable Connectors

To make a connector for armored optical cable, carefully strip the armor and protective layers, clean and cleave the fiber, then terminate using a compatible connector or fusion splice while following safety and optical testing procedures.Understanding Armored Optical CableArmored optical cables have a metal armor layer (stainless steel or corrugated steel) between the outer sheath and the fiber core, providing protection against crushing, moisture, rodents, and mechanical stress . They may also include an inner protective layer and aramid (Kevlar) strength members for additional tensile strength . This structure makes them stiffer and heavier than standard fiber, requiring careful handling during termination .Tools and PreparationBefore connectorization, gather the following tools:Fiber strippers and cutters suitable for armored cablesKevlar scissors for strength membersFiber cleaverCleaning kit (lint-free wipes, alcohol)Microscope or inspection toolConnector kit (LC, SC, or mechanical splice)Fusion splicer if using fusion splicing Inspect the cable for damage, confirm fiber type (single-mode or multimode), and plan the bend radius and routing path to avoid stress on the fiber .Step-by-Step ConnectorizationCut the Cable: Use a fiber cable cutter to cut the armored cable to the desired length, adjusting blade depth to match armor thickness .Strip the Outer Jacket and Armor: Carefully remove the outer sheath and metal armor using appropriate stripping tools. Wear gloves to avoid injury from sharp metal edges .Handle Strength Members: Cut Kevlar or aramid fibers with specialized scissors to prevent fraying .Expose and Clean the Fiber: Strip the inner protective layer to expose the bare fiber. Clean the fiber end thoroughly with alcohol and lint-free wipes, inspecting under a microscope to ensure no debris or scratches .Cleave the Fiber: Use a precision cleaver to create a flat, smooth fiber end for optimal light transmission .Terminate the Connector:Mechanical Connector: Insert the cleaved fiber into a mechanical splice or quick-connect connector, ensuring precise alignment for minimal insertion loss (~0.3 dB typical), .Fusion Splice: Place the fiber ends in a fusion splicer, align, and fuse them using heat or electric arc. Protect the splice with a fusion splice protector .Test the Connection: Perform optical testing using an OTDR, power meter, or visual fault locator to verify continuity, insertion loss, and return loss .Safety and Best PracticesFollow the manufacturer's recommended minimum bend radius (typically 20–30 mm or more) to prevent fiber damage .Avoid pulling or twisting the fiber; armored cables are heavy and stiff .If the armor is conductive, ensure proper grounding according to local safety standards .Always wear gloves and eye protection when cutting metal armor . By following these steps, you can create a reliable, low-loss connection for armored optical cables suitable for harsh or industrial environments, ensuring long-term network performance and durability .