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Measurement of the numerical aperture of a step-index optical fibre

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2 Author(s)
Jeunhomme, L. ; Centre de Recherches de la Compagnie Générale d' Électricité, Laboratoires de Marcoussis, Marcoussis, France ; Pocholle, J.P.

We describe a simple method for measuring the numerical aperture of a step-index fibre. The value obtained by this method depends only on the index difference between the core and cladding, and it is then possible deduce the index difference from this measurement.

Published in:

Electronics Letters  (Volume:12 ,  Issue: 3 )