Main Causes of Fiber Optic Failures

Reasons for Fiber Optic Failures:

1. 1.Excessive Length of Fiber Optic Cable: Long fiber optic cables can lead to performance issues.

2. 2.Excessive Bending: Overly bending the fiber optic cable can result in signal degradation.

3. 3.Compression or Breakage of Fiber Optic Cable: When fiber optic cables experience uneven stress, such as pressure or temperature changes affecting plastic-coated fibers, they may develop small irregular bends or even break. This can cause a transformation from guided mode to radiative mode, leading to optical energy loss.

4. 4.Poor Fusion Splicing of Fiber Optic Cable: Inadequate fusion splicing can result in connectivity issues.

5. 5.Mismatched Core Diameters: Differences in core diameters between connected fibers can lead to performance issues.

6. 6.Mismatched Filler Diameters: Inconsistencies in filler diameters within the cable structure can cause problems.

7. 7.Contamination at Fiber Optic Joints: Contamination at fiber optic joints and moisture affecting tail fibers are among the primary reasons for communication failures in fiber optic cables.

8. 8.Poor Polishing at Joints: Inadequate polishing at joints, especially at the termination points like fiber distribution boxes and optical switches, can occur due to negligence, equipment quality issues, or aging joints. This can result in loose fiber optic joints, causing reflection loss and leakage attenuation of optical signals.