Question

In the fiber optic link, power transfer from one fiber to another and from fiber to detector must take place with ____ coupling efficiency.

• A. Maximum
• B. Stable
• C. Minimum
• D. Unpredictable

Hint:

Fiber Optic Coupling. Aim is to maximize power transfer between components. High coupling efficiency minimizes signal loss (attenuation) in the link.

Answer 1

The Correct Option is A

In any communication system, including fiber optic links, the goal is to transfer the signal power from one stage to the next with minimal loss
Coupling efficiency refers to the fraction of power successfully transferred from one component (e
g
, light source, fiber) to the next (e
g
, fiber, detector)
Losses occur due to misalignment, differences in core sizes or numerical apertures, reflections, etc
To maintain signal strength and minimize the need for amplification, it is essential to design connectors, splices, and interfaces to achieve the maximum possible coupling efficiency at each junction (source-to-fiber, fiber-to-fiber, fiber-to-detector)