A poor cleave angle causes what type of loss?

A poor cleave angle causes what type of loss?

• A. Intrinsic
• B. Extrinsic
• C. Scattering
• D. Absorption

Answer: (B)

End-face geometry and how it affects coupling is the key idea. Loss types are broadly intrinsic (from the fiber material itself, like absorption or scattering inside the core) or extrinsic (due to external factors such as how the end is prepared or mounted). A cleave that isn’t at a proper angle creates an imperfect end-face. Light that reaches this angled surface isn’t coupled efficiently into or out of the fiber and much of it is lost as diffuse reflection or scattering at the interface. That kind of loss comes from the processing/assembly of the fiber, not from the material properties, so it’s extrinsic. Intrinsic losses come from the material itself (absorption, inherent scattering), and aren’t caused by the end-face angle.

End-face geometry and how it affects coupling is the key idea. Loss types are broadly intrinsic (from the fiber material itself, like absorption or scattering inside the core) or extrinsic (due to external factors such as how the end is prepared or mounted). A cleave that isn’t at a proper angle creates an imperfect end-face. Light that reaches this angled surface isn’t coupled efficiently into or out of the fiber and much of it is lost as diffuse reflection or scattering at the interface. That kind of loss comes from the processing/assembly of the fiber, not from the material properties, so it’s extrinsic. Intrinsic losses come from the material itself (absorption, inherent scattering), and aren’t caused by the end-face angle.