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Improvement of optical feedback immunity by using a detuned gain-coupled DFB laser

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4 Author(s)
Achtenhagen, M. ; Ecole Polytech. Federale de Lausanne, Switzerland ; Borchert, B. ; Miles, R.O. ; Reinhart, F.K.

The authors present a comparison of the feedback sensitivity in a detuned gain-coupled (GC) DFB laser able to operate also in a Fabry-Perot (FP) mode. The comparison leads to a very accurate measurement of the reduction of the linewidth enhancement factor. A novel expression is proposed and a value close to 2.0 is found for the wavelength detuning around 28 nm

Published in:

Electronics Letters  (Volume:31 ,  Issue: 5 )