Effect of dip in the referctive index on the cut-off frequency of a single-mode fibre

Buy article PDF
© The Institution of Electrical Engineers
Published 21/07/2012

Abstract

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.

Inspec keywords: refractive index; optical fibres

Other keywords: dip effect; single mode fibre; cut off frequency; refractive index; dip widths; optical fibre; propagation characteristics

Subjects: Fibre optics; Fibre optics and fibre waveguides

References

    1. 1)
      • 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
    2. 2)
      • Matsumra, H.: , Cut-off normalized frequency in radially inhomogeneous single-mode fibre
    3. 3)
    4. 4)
      • 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
Print this page
This is a required field
Please enter a valid email address