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35 dB optical gain at 2.716 mu m in erbium doped ZBLAN fibre pumped at 0.642 mu m

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6 Author(s)
D. Ronarc'h ; LAB/SMR/ESO, CNET, Lannion, France ; M. Guibert ; F. Auzel ; D. Mechenin
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An optical gain of 35 dB at 2.716 mu m signal wavelength has been measured in an erbium doped ZBLAN fibre. A pump-wavelength scanning determined the pump wavelength for maximum gain. This pump wavelength was found to be 0.642 mu m. The maximum absorption wavelength for this Er3+ doped fibre is 0.649 mu m. It was deduced that the excited state absorption process improves the gain performance of such fibres at the signal wavelength considered.

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Electronics Letters  (Volume:27 ,  Issue: 6 )