What is the minimum inside bend radius for a four-strand optical fiber cable at rest?

The correct choice regarding the minimum inside bend radius for a four-strand optical fiber cable at rest is 25 mm (1 in). This value is based on industry standards and manufacturer specifications that ensure the integrity and performance of the fiber optic cables.

Maintaining the appropriate bend radius is critical as exceeding the minimum bend radius can lead to increased attenuation, signal loss, or even damage to the fiber. The specified 25 mm minimum inside bend radius is designed to protect the delicate glass fibers within the cable from excessive strain, which could compromise data transmission quality.

Understanding this specification helps in effective installation and maintenance practices. It ensures that cables are routed correctly within pathways and that devices do not inadvertently stress the cables, preserving optimal performance over time.