Question

For a multimode fiber, core size is

• A. 50-100 $\mu m$
• B. 200-300 $\mu m$
• C. 10-20 $\mu m$
• D. 500-1000 $\mu m$

Answer 1

Answer: (A)

50-100 $\mu m$

Answer 2

Multimode optical fibers are characterized by a larger core diameter to allow multiple modes of light to propagate. Standard multimode fibers commonly have core diameters of 50 $\mu m$ or 62.5 $\mu m$. Therefore, the range 50-100 $\mu m$ accurately represents the typical core size for a multimode fiber.