What is splicing in fiber optics?

Splicing in fiber optics refers specifically to the action of joining two ends of optical fibers together. This process is crucial for establishing a continuous optical path for light signals to pass through without significant loss. During splicing, technicians align the two fiber strands precisely to ensure that the light can travel seamlessly from one fiber to the other, enabling communication and data transfer.

There are generally two primary methods of splicing: mechanical splicing and fusion splicing. Mechanical splicing uses a fixture to hold the fiber ends in alignment, while fusion splicing involves the use of heat to melt the fiber ends together, providing a more permanent and low-loss connection. Either method is focused on ensuring that the optical signal can propagate effectively without interruption.

The other options pertain to different concepts entirely within the field of fiber optics. Amplifying a signal typically involves electronic equipment rather than a physical joining technique, covering cables with insulation is related to the protective aspects of cabling and does not directly influence the optical performance, and testing signal quality involves evaluating the performance of an already established connection rather than the act of creating that connection through splicing.