`theta = arcsin(1/ n_0 *sqrt( n_c ^2- n_(cl) ^2))`

Enter a value for all fields

The Acceptance Angle in Optical Fiber is found using the following formula: `theta=1/n_0sqrt(n_c^2-n_(cl)^2)`, where:

• `theta` = acceptance angle
• `n_0` = refractive index of medium around core
• `n_c` = refractive index of core
• `n_(cl)` = refractive index of cladding

References

The formula is from RP Photonics Encyclopedia (https://www.rp-photonics.com/acceptance_angle_in_fiber_optics.html).

The definition is from Wikipedia (https://en.wikipedia.org/wiki/Guided_ray).