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refractive index contrast

In an optical fiber, a measure of the relative difference in refractive index of the core and cladding. (188) Note: Refractive index contrast, , is given by = (n ₁²- n ₂²)/(2n ₁²), where n ₁ is the maximum refractive index in the core and n ₂ is the refractive index of the homogeneous cladding.

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