What should be the minimum bending radius of a fiber optic cable to avoid damage?

The minimum bending radius of a fiber optic cable is a critical factor in preserving the integrity and performance of the cable. Fiber optic cables are designed to transmit light signals, and exceeding the minimum bending radius can lead to micro-bending or macro-bending effects. These bends can cause attenuation (signal loss) and potentially permanent damage to the fiber.

The correct guideline for the minimum bending radius typically is 15 times the cable's outer diameter. This means that if the cable were to be bent, the radius of that bend must be at least 15 times larger than the cable's diameter to prevent any internal stress or failure within the optical fibers. This standard helps ensure that the fibers remain effective in transmitting light without degradation in signal quality.

Adhering to this minimum bending radius is essential for installation practices, maintenance, and in environments where cables are subject to movement or stress. Using proper bending techniques and respecting the specified limits allows for longer cable life and better performance in fiber optic systems.