Why is grounding to earth important in fiber-optic installations?

Grounding to earth is crucial in fiber-optic installations primarily because it provides protection against lightning strikes and helps to reduce the buildup of static electricity. Fiber-optic cables, while they transmit data using light and are less susceptible to electromagnetic interference compared to copper cables, can still be affected by electrical surges caused by lightning or static discharges.

By establishing a reliable grounding system, any electrical surges can be safely directed into the ground, preventing potential damage to sensitive equipment and ensuring the integrity of the fiber-optic installation. This protective measure is essential for maintaining system performance and reliability, especially in outdoor installations where exposure to natural elements can lead to unforeseen electrical risks.

The other options, while they address various aspects of cable performance or longevity, do not directly relate to the primary reason for grounding in fiber-optic installations. Grounding does not enhance signal strength, prevent cable corrosion, or directly influence data transmission rates, making the focus on safety and electrical protection the most critical aspect.