RIP input file

[Marc Mermelstein]

Can you please send me an example of an input file with the refractive index profile? I have been trying to write a BCF2DPC file but am having trouble. I write it in Notebook, have the radial units in microns, but the radius exhibited on the index (fiber) profile seems to by X1000 the right value.

[Steve Dods]

In the Export Profile… / Import Profile feature, the profile data is arranged as a sequence of concentric layers of specified width and refractive index. The first column has the widths (annuli) in microns. The second column has the refractive index found in each layer (annulus). The first column is not a coordinate value of the radius. For example, a step index fibre with core diameter 8.3 and cladding outer diameter 125 µm will appear as

BCF2DPC
2
4.15 1.452
58.35 1.447

and not as it would be in coordinate form

BCF2DPC
2
4.15 1.452
62.5 1.447

If the data is presented in coordinate form, the radii will be interpreted as widths and the fibre will appear somewhat larger than expected!

[Marc Mermelstein]

Thanks, I made the correction and the simulation works fine,
Marc

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