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Very high numerical aperture fibers

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7 Author(s)
Wadsworth, W.J. ; Optoelectronics Group, Univ. of Bath, UK ; Percival, R.M. ; Bouwmans, G. ; Knight, J.C.
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Air-silica microstructured fibers are designed and fabricated to yield numerical aperture (NA) greater than 0.9. A model is presented which accurately predicts the structural parameters required in order to realize high NAs. Such fibers have application in lasers and laser-induced-fluorescence systems.

Published in:

Photonics Technology Letters, IEEE  (Volume:16 ,  Issue: 3 )