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PI Physik Instrumente - Revolution In Photonics Align ROSLB 3/24
Photonics Dictionary

refractive index contrast

A measure of the relative difference in refractive index between two optical materials. Most commonly used in fiber optics where the refractive index contrast, D, is given as follows:
where n1 equals the index of the core material and n2 equals the index of the cladding.
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