Effect of dip in the referctive index on the cut-off frequency of a single-mode fibre
The normalised frequency for single-mode cut-off in an optical fibre has been calculated as a function of the dip in the refractive index at the centre of the core. For a particular class of profiles, dip width up to 40% have a negligible effect on the propagation characteristics.
- Gambling, W.A., Payne, D.N., Hammond, C.R., Norman, S.R.: `Optical fibres based on phosphosilicate glass', Proc. IEE, 1976, 123, (6), p. 570-576
- Matsumra, H.: , Cut-off normalized frequency in radially inhomogeneous single-mode fibre
- Stolen, R.H.: `Modes in fibre optical waveguides with ring index profile', Appl. Opt., 1975, 14, p. 1533-1537
- 1 onward links are available for this reference.
- Gambling, W.A., Payne, D.N., Matsumura, H.: `Determination of core diameter and refractive-index difference of single-mode fibres by observation of the far-field pattern', MOA, 1976, 1, p. 13-17