27/01/2026
💡 Fiber Loss: Why It Matters
The performance of a fiber largely depends on its loss, which affects signal quality and determines the maximum transmission distance without repeaters.
Loss comes from two main sources:
Intrinsic Loss: the unavoidable “energy drain” from the fiber itself, including absorption (material, impurities, atomic defects) and scattering (Rayleigh, manufacturing imperfections).
Extrinsic Loss: additional loss caused by handling or environment, such as bending (macro/micro), splicing, and coupling.
🔧 Key insight: intrinsic loss is stable, but extrinsic loss fluctuates. In practice, it’s often these controllable factors that define the actual performance of a fiber link.
