Linewidth dependence on side-mode suppression in three-electrode DFB laser

Öberg, M.; Broberg, B.; Nilsson, S.; Backbom, L.; Morner, A.-C.; Eriksson, Gunnar; Vuorela, T.

doi:10.1049/el:19890121

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1989

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Connection between linewidth saturation and power increase of transverse magnetic mode in ridge distributed feedback lasers

Sapia

Spanó

Mecozzi

1989

Applied Physics Letters

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We present some experimental results of ridge distributed feedback semiconductor lasers showing a linewidth broadening at high emission power which is due to the growth of transverse magnetic polarized radiation. We also show how the linewidth saturation can be ascribed to an increase in the low-frequency content of the phase noise spectrum. This increase at low frequency is also linked to a deformation in the probability distribution of the instantaneous optical emission frequency.

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