Compute the fraction of energy reflected at normal incidence from the refractive indices of two media. For anti-reflection coatings, windows and fiber end-face loss estimates.
正入射时界面反射能量比例。
| Item | Standard / Source | Key Point |
|---|---|---|
| Normal-incidence Fresnel reflectance | Fresnel equations (1821); Classic optics (Hecht, Optics, 5th ed.) | R = ((n1-n2)/(n1+n2))^2 |