What precaution should be taken when handling bare fiber?

When handling bare fiber, it is essential to avoid touching the fiber ends. This precaution is crucial because the ends of optical fibers are very delicate and can easily be damaged or contaminated. Contact with skin oils, dust, or other contaminants can affect the performance of the fiber and may lead to signal loss or degradation.

In addition, the glass used in optical fibers can pose a risk of splintering. If the fiber is broken, it can create sharp shards that can injure the hands or eyes, emphasizing the need for careful handling. Proper techniques, such as using gloves and tools designed for fiber handling, help maintain the integrity of the fiber and ensure safety during installation or maintenance tasks.

Other options suggest behaviors that can compromise both the fiber's integrity and the safety of the person handling it, which further illustrates the importance of avoiding direct contact with the ends of bare fiber.