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Effective refractive index when two transparent medium are joined in s

  1. Aug 21, 2014 #1
    Dear All,

    If two layers of thickness d1 and d2 stacked on each other and having their absolute refractive index n1 and n2 .

    Can we find effective refractive index of the combination with this data?

    Thanks in advance.

  2. jcsd
  3. Aug 21, 2014 #2

    Simon Bridge

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  4. Aug 21, 2014 #3

    Claude Bile

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    Yes, but the calculation is not straightforward, because it depends on the mode profile - which is generally found by solving wave-equations.

    Once you know the mode profile, the calculation becomes relatively straightforward, essentially it is just an average of the two indices, weighted by the mode fraction in each layer.

  5. Aug 21, 2014 #4
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