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Effective refractive index and range of monomode operation for W-fibres

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2 Author(s)
Hussey, C.D. ; University of Southampton, Department of Electronics, Southampton, UK ; de Fornel, F.

Through the concept of `the effective refractive index¿ of a step-index W-fibre, we can define, in a very simple manner, lower bounds on the normalised cutoff frequencies of the fundamental and second modes of that particular fibre. This allows us to specify the `normalised range of monomode operation¿ which for most W-fibres has a constant value of 1.427.

Published in:

Electronics Letters  (Volume:20 ,  Issue: 8 )