What is V number? What is its significance. Distinguish between single mode and multimode fiber?

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written 7.9 years ago by

neeta.vanage • 880

modified 3.9 years ago by

pedsangini276 • 4.8k

Subject :- Applied Physics 2.

Topic :- Laser.

Difficulty :- Low.

engineering physics

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written 7.8 years ago by

neeta.vanage • 880

An optical fiber is characterized by one more important parameter known as V number more commonly called as normalizes frequency. It is expressed as: -

V=  (2πa/λ) N.A   a is radius of core

It signifies the no of modes propagated in the fiber.

V < 2.405, the fiber can support …

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