Ask a Question

Calculate the V number of an optical fibre having numerical aperture 0.25 and core diameter 20 μm

0 votes
131 views
in Engineering Physics 2 by (98.9k points)
retagged by

Calculate the V number of an optical fibre having numerical aperture 0.25 and core diameter 20 μm, if its operating wavelength is 1.55 μm

1 Answer

0 votes
by (98.9k points)
selected by
 
Best answer

NA = 0.25
Core diameter = 20 μm
λ0= 1.55 μm

Formula: V = ᴨd / λ0 ×NA

V = 3.14×20×10-6 /1.55 ×10-6 ×0.25
V = 10.13

Related questions

Doubtly is an online community for engineering students, offering:

  • Free viva questions PDFs
  • Previous year question papers (PYQs)
  • Academic doubt solutions
  • Expert-guided solutions

Get the pro version for free by logging in!

Most popular tags

jeemain geography-10th engineering physics semester 5 web computing

5.7k questions

5.1k answers

108 comments

561 users

Doubtly
...