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Transverse light coupling from GaAs lasers into optical fibres

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1 Author(s)
Timmermann, C.C. ; Robert Bosch GmbH, Geschÿftsbereich Fernsehanlagen, Darmstadt, West Germany

We report a method for transverse light coupling from GaAs lasers into optical fibres. The fibre end is positioned perpendicular to the laser-beam direction and is cut at the end under 45° to reflect the laser radiation. We measured 10% coupling efficiency for a plastics fibre which was simply cut by a blade. We used this method for an automatic-gain-control circuit and picked up reference light from the back side of a d.h. laser.

Published in:

Electronics Letters  (Volume:13 ,  Issue: 25 )

Date of Publication:

December 8 1977

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