How many centimeters should the spliced ​​optical cable be pulled out

For fusion splicing, the optical fiber should typically be pulled out 3–5 cm for the bare fiber and 50–100 cm for the outer cable jacket. Detailed Guidelines1. Stripping the Outer Jacket: Before splicing, the outer plastic layer of the optical cable should be stripped to expose the inner fibers.

The recommended length for this is 50–100 cm, depending on the working space and cable type, ensuring enough fiber is available for handling and insertion into the splice tray or fusion splicer. 2. Stripping the Fiber Coating: The protective coating around the individual fiber should be carefully removed to expose the bare glass fiber.

The typical length for this bare fiber is 3–5 cm. This length allows the fiber to be properly cleaved and inserted into the fusion splicer while leaving room for the fiber protection sleeve to cover the splice completely. 3.

Cleaving and Protection: After stripping, the fiber end is cleaved using a precision cleaver to create a flat, mirror-like surface. The bare fiber is then inserted into a fiber protection sleeve, which is slid over the splice before fusion. The sleeve ensures mechanical protection and strain relief for the joint.

4. Handling Precautions: Avoid touching the bare fiber with fingers to prevent contamination. Maintain a bending radius greater than 30 mm to prevent microbends.

Keep the stripped fiber straight and tensioned when inserting into the splicer. By following these lengths and precautions, the spliced optical fiber will have minimal insertion loss and mechanical reliability, ensuring a high-quality connection.