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Low-loss single-polarisation fibres

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3 Author(s)
T. Katsuyama ; Hitachi Ltd., Central Research Laboratory, Kokubunji, Japan ; H. Matsumura ; T. Suganuma

Low-loss single-mode fibres that maintain polarisation well have been fabricated by the standard MCVD method. An extinction ratio of less than ¿30 dB at 1 km and a loss of 0.8 dB/km at 1.5 ¿m were achieved by the concentric circular germanosilicate core-clad fibres with the borosilicate elliptical jacket.

Published in:

Electronics Letters  (Volume:17 ,  Issue: 13 )