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Laser coupling to single-mode fibre using graded-index lenses and compact disc 1.3 μm laser package

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3 Author(s)
Reith, L.A. ; Bell Communications Research, Murray Hill, USA ; Shumate, P.W. ; Koga, Y.

A 1.3 μm laser in a compact disc package is coupled to single-mode fibre using two graded-index lenses in a nearly confocal scheme. An increase in the alignment tolerance at the lens-lens interface by a factor of six suggests the design for a potentially very low-cost connectorised laser package. The coupling efficiency of approx. 6% (-12 dB) is shown to be adequate for local loop applications.

Published in:

Electronics Letters  (Volume:22 ,  Issue: 16 )