Which of the following connection processes uses a connector that contains a pre-polished fiber stub with index-matching gel?

The connection process that uses a connector with a pre-polished fiber stub and index-matching gel is mechanical splicing. This method involves aligning two pieces of optical fiber using a mechanical fixture, which maintains the alignment and allows light to pass through the fibers. The index-matching gel helps to reduce reflection and ensure a smoother passage of light between the fibers, enhancing connectivity and minimizing signal loss.

In mechanical splicing, the pre-polished fiber stub is critical because it serves as a convenient and effective way to achieve a connection without the need for complex cleaving or fusion. It simplifies the process, making it faster and more efficient, especially in field applications where time is often a limiting factor.

Understanding mechanical splicing and its components—like the pre-polished fiber stub and index-matching gel—provides insight into how different fiber optic connection techniques work and their applications in various settings.