Question

In: Physics

a step-index optical fiber with a core diameter of 80μm has a relative refractive index difference...

a step-index optical fiber with a core diameter of 80μm has a relative refractive index difference of 1.5% with a core refractive index of 1.48 at a wavelength of 850nm. how many modes in the optical fiber?

Expert Solution

To find the modes in optical fiber, we have to find the normalized frequency or V-number.

Given,

Core diameter of the optical fiber is .

Core refractive index is

Relative refractive index difference is .

Wave length of light used is .

The Normalized Frequency or V-number is

V number is .

V number , the fiber is Multi mode fiber.

Number of modes in Step Index Fiber is given by

modes.

Number of modes in Step Index Fiber is modes.

genius_generous answered 2 years ago

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