What is a splice in fiber optics?

A splice in fiber optics refers to a permanent joint between two fiber optic cables. This process involves a precise alignment of the fiber ends and often utilizes techniques such as fusion splicing or mechanical splicing to achieve low-loss connections.

Fusion splicing typically involves melting the ends of the fibers to create a continuous, low-loss pathway for light to pass through, effectively maintaining the integrity of the optical signal. Mechanical splicing, on the other hand, aligns the fibers in a fixture that holds them together, allowing for light to be transmitted through a matching index of refraction gel or adhesive.

This permanent nature of a splice is crucial for applications requiring reliable and consistent fiber optic communication. Unlike temporary joints, which are often used for testing or troubleshooting, splices are designed for long-term use, ensuring minimal signal loss and maximum performance over the lifespan of the installation.

Other options describe different concepts: a temporary joint is not considered a splice; an external connector would not be classified as a splice since it allows for removable connections; and methods for shielding against noise pertain to different aspects of fiber optics, focusing more on electromagnetic interference and signal integrity rather than the actual joining of fiber optic cables.