Question

prove that NA does not depend upon dimensions of optical fiber

Answer 1

Answer:

Numerical Aperture is defined as the Sine of half of the angle of fibre's light acceptance cone. i.e. NA= Sin θa where θa, is called acceptance cone angle. From the formula it is clear enough that it doesn't depends on the dimension of the fibre but on the value of theta.

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Answer 2

Numerical Aperture does not depend upon dimensions of optical fiber.

Given:

       Numerical Aperture of Optical Fiber.

To find:

      Whether the statement is right or wrong.

Explanation:

• Optical fibers:
• They are fine transparent glass  they  can propagate light. They works to the principle of total internal reflection from diametrically opposite walls.
• Numerical Aperture:
• Defined as the Sine of half of the angle of fibre's light acceptance cone.
• That is. NA= Sinθa
• Where  θa = acceptance cone angle.
• From the formula it is clear that NA doesn't depends on the dimension of the fibre but on the value of acceptance cone angle.
• Hence proved.

To learn more....

1)Define the characteristics of resolution, magnification and numerical aperture.

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2)In optical fibre, refractive index of inner part is 1.68 and refractive index of iouter part is 1.44. the numerical aperture is

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