First step in the operation sequence of optical cable splicing inside the junction box

The first step is to strip the optical cable and securely fix it inside the splice box, ensuring the fiber cores are exposed without damage.Detailed Explanation1. Strip the Optical Cable: Before any splicing can occur, the outer jacket, protective coatings, and strength members of the optical cable must be carefully removed to expose the bare fiber cores. This is typically done using a fiber cable stripper. The stripping length is usually around 1 meter, depending on the splice box design and the number of fibers to be spliced . Care must be taken not to damage the bundle tubes or the fiber cores during this process . 2. Secure the Cable in the Splice Box: Once stripped, the optical cable is fixed inside the junction or splice box. This involves securing the strength members (such as steel wires or aramid yarns) and the remaining cable body to prevent movement. Proper fixation ensures that the fibers do not shift, twist, or experience stress, which could lead to increased optical loss or fiber breakage over time . The core bundle tubes should be positioned correctly, avoiding twisting or deformation, and any reinforcement should be appropriately sized to fit the splice box . 3. Clean and Prepare for Splicing: After securing the cable, the exposed fibers are cleaned using lint-free wipes and isopropyl alcohol to remove any contaminants. This step is essential for both mechanical and fusion splicing, as dirt or oils can significantly affect splice quality . By completing these initial steps—stripping the cable, fixing it securely in the splice box, and cleaning the fibers—you establish a stable foundation for the subsequent steps, such as fiber cleaving, alignment, and splicing. Proper execution of this first step is critical for ensuring low insertion loss, long-term reliability, and protection of the optical fibers inside the junction box .