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The performance of depressed-cladding single-mode fibers with different b/a ratios

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4 Author(s)
Hagemann, H.-J. ; Philips Res. Lab., Aachen, Germany ; Lade, H. ; Warnier, J. ; Wiechert, D.

Depressed-cladding single-mode fibers with a first cladding-to-core ratio (b/a) ranging from seven to one and relative refractive-index differences of the core from 0.25 to 0.35% and of the cladding from 0 to -0.2% are investigated experimentally with respect to the LP11 mode cutoff properties, the mode-field diameter, the dispersion, and the bending attenuation. Numerical calculations based on actual profile parameters of the bend loss and the mode-field diameter agree well with experiment. It is demonstrated that low attenuation and bend losses independent of b/a can be obtained if the cutoff wavelength is kept constant by adjusting the core radius, the core index or the index of the first cladding

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Lightwave Technology, Journal of  (Volume:9 ,  Issue: 6 )