How to connect a two-core fiber optic fusion splice box

Connecting a two-core fiber optic fusion splice box involves careful fiber preparation, precise alignment, fusion splicing, and proper protection of the spliced fibers.

Tools and Materials Needed

• Fusion splicer with appropriate fiber holders for 250µm or 900µm fibers
• Fiber cleaver for precise 90° cuts
• Fiber stripper to remove coatings
• Isopropyl alcohol and lint-free wipes for cleaning
• Splice protection sleeves
• Two-core fiber optic cable and pigtails
• Safety equipment: goggles, cut-resistant gloves, anti-static wrist strap

Step-by-Step Procedure

1. Prepare the Workspace

Ensure a clean, dust-free environment. Wear safety goggles and gloves to protect against glass shards. Use an anti-static mat or wrist strap to prevent static damage to the splicer .

2. Strip the Fiber

• Remove 3–5 cm of the outer jacket of the fiber cable using a cable slitter .
• Strip the 250µm or 900µm coating carefully with a fiber stripper, avoiding bending or twisting the fiber .
• Clean the exposed fiber with an IPA-soaked lint-free wipe, sliding from the base to the tip to remove oils and debris .

3. Cleave the Fiber

• Place the stripped fiber in the cleaver's V-groove and close the cover .
• Cleave the fiber at a precise 90° angle. Inspect under a microscope for a flat, mirror-like surface .

4. Insert Fibers into the Fusion Splicer

• Open the splicer's windshields and place each fiber in the V-groove clamps, ensuring proper orientation .
• Select the correct fiber type in the splicer menu. The device will calibrate automatically .

5. Perform the Fusion Splice

• Start the splicing process. The splicer generates an electric arc to fuse the fiber cores together .
• Monitor the process on the splicer's viewing screen to ensure proper alignment .

6. Protect the Splice

• Slide a splice protection sleeve over the fused fiber .
• Heat-shrink the sleeve if required to secure and protect the splice from mechanical stress .

7. Place Fibers in the Splice Box

• Carefully route the spliced fibers into the two-core fusion splice box, maintaining a bending radius >30 mm .
• Secure the fibers in the designated holders or trays inside the box to prevent movement and stress .
• Close the box lid and ensure it is sealed to protect against dust and moisture .

8. Test the Splice

• Use an OTDR or insertion loss meter to verify the quality of the splice .
• Confirm low attenuation and minimal reflection to ensure optimal signal transmission . Following these steps ensures a reliable, low-loss connection for a two-core fiber optic fusion splice box, suitable for FTTx or other high-performance optical networks .