Optical Fiber NA Calculator
Determine the numerical aperture of a step-index optical fiber from core and cladding refractive indices. Calculates acceptance angle, V-number for single/multimode determination, and number of modes.
Inputs
Core diameter for V-number calculation
Results
NA
0.2425
Acceptance Angle
14.03°
V-Number
24.57
Multimode
Optical Fiber NA Results
| Parameter | Value |
|---|---|
| Numerical Aperture | 0.242487 |
| Acceptance Angle (half) | 14.0334° |
| Acceptance Cone (full) | 28.0668° |
| V-Number | 24.5741 |
| Fiber Type | Multimode |
| Number of Modes | ~302 |
| Relative Index Diff Δ | 1.3422% |
| Core Index | 1.48 |
| Cladding Index | 1.46 |
| Formula | NA = √(n²core - n²clad) |
Frequently Asked Questions
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