// multi-utility computation suite · offline · instant · precise
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sci.optical-fiber-numerical-aperture Calculator
Calculates numerical aperture of an optical fibre: NA = √(n₁² − n₂²) and maximum acceptance half-angle θ = arcsin(NA). Single-mode SMF-28: NA = 0.14 — multimode 50/125 µm graded-index: NA = 0.2, accepting light within ±11.5° of the fibre axis.
Inputs
N1 Core
Reference formula or conversion factor shown for context.
N2 Clad
Reference formula or conversion factor shown for context.
Results
numerical aperture NA
Sample size or count used in the calculation.
acceptance half-angle θ_max (deg)
The computed angle in degrees or radians.
relative refractive index diff Δ
A normalised score comparing the result to a reference baseline.
V-number at 850 nm (62.5μm core)
The value at the specified point or condition.
NA = √(n₁² − n₂²)
Sample size or count used in the calculation.
fiber type
The classification or type assigned based on the inputs.