Certified Fiber Optics Practice Exam

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NA mismatch is classified as what type of factor?

External
Intrinsic
Control
Extrinsic

The correct answer is: Intrinsic

NA mismatch, which refers to the difference in refractive indices of two adjacent layers in a fiber optic cable, is classified as an intrinsic factor. Intrinsic factors are inherent to the fibers themselves, such as their material properties, structure, and design characteristics. In this context, the refractive index mismatches can significantly affect the propagation of light through the fiber, impacting the efficiency and performance of the optical transmission. Intrinsic factors are contrasted with extrinsic factors, which are related to the external environment or conditions affecting fiber optics, such as temperature changes or physical stresses. Control factors pertain to aspects that can be managed or regulated, such as installation practices or maintenance routines, while extrinsic factors are more generalized external influences. Recognizing NA mismatch as an intrinsic factor is crucial because it underscores the importance of material selection and design considerations when optimizing fiber optic systems.