d2n
- ofiber.refraction.d2n(glass_coef, lambda0)[source]
Calculate the second derivative of the refractive index w.r.t. wavelength.
- Parameters:
glass_coef – array of Sellmeier coefficients obtained from glass(i)
lambda0 – wavelength in vacuum [m]
- Returns:
the second derivative of index of refraction [1/m**2]