Multimode step-index fibers have a core and cladding of constant refractive index n1 and n2, respectively. Which refractive index, the core or cladding, is lower?

Multimode step-index fibers have a core and cladding of  constant refractive index n1 and n2, respectively. Which  refractive index, the core or cladding, is lower?
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1 Answer

Answer :

Cladding.
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