Equivalent-step-index-fibre determination from wavelength dependence of far field

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Equivalent-step-index-fibre determination from wavelength dependence of far field

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© The Institution of Electrical Engineers
Published

We compare two simple techniques for determination of equivalent-step-index parameters in single-mode fibres from measurement of the wavelength dependence of the far-field intensity profile. In one case the data is fitted directly by the step-index formula to yield the core radius and the v-value. In the other, wavelength dependence of the half-intensity angle is fitted to an empirical expression recently reported to give the core radius and the cutoff wavelength.

Inspec keywords: optical fibres; refractive index; optical waveguide theory

Other keywords: half-intensity angle; cutoff wavelength; equivalent-step-index parameters; far-field intensity profile; single-mode fibres; wavelength dependence; core radius

Subjects: Fibre optics; Fibre optics and fibre waveguides

References

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