In fiber splice preparation, why is cleaving considered an essential step?

Cleaving is a critical step in fiber splice preparation because it ensures that the ends of the optical fibers are cut cleanly and at the correct angle. This precision is crucial for achieving optimal light transmission and minimal loss during splicing. When the fiber ends are cleaved properly, they fit together smoothly, allowing for effective fusion or mechanical splicing. A clean, flat surface at the cleavage point enables a stronger bond and efficient signal transfer between fibers, which is essential for maintaining the integrity of the fiber optic network.

The cleaving process directly impacts the quality of the splice by minimizing reflection and scattering of light at the joint. If the ends of the fibers are uneven or not aligned properly, it can lead to increased signal loss and degraded performance of the optical links. Therefore, achieving perfect alignment through cleaving is foundational for the success of both fusion and mechanical splicing techniques.

Other choices indicate processes that do not inherently contribute to the alignment or quality of the splicing operation. For instance, labeling fibers aids in identification but does not affect the splicing performance itself. Reducing the bending radius or removing excess coating may relate to fiber handling and protection, but they are not central to ensuring the precision alignment necessary for effective splicing.