anonymous
  • anonymous
why medium of core in optical fiber is not air?
Physics
schrodinger
  • schrodinger
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anonymous
  • anonymous
it'll have to be a light dense medium(relative to the cladding) for total internal reflection in the fibers to ocur.
ash2326
  • ash2326
Light should travel in a medium of higher refractive index than the cladding material,. otherwise there won't be Total Internal Reflection. Air has the least refractive index after vacuum
anonymous
  • anonymous
i think you could have asked why we need cladding in the first place.. why won't just a glass tube (core) do the job?

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