1990•Electronics LettersRequires access

Correlation of relative intensity noise with linewidth floors in narrow linewidth DFB lasers

H. Sundaresan, Nicholas C. Fletcher

Abstract

The relative intensity noise of narrow linewidth DFB lasers in the vicinity of linewidth floors was measured. A strong correlation between linewidth rebroadening and a corresponding increase in the relative intensity noise for frequencies below 3 GHz was observed for devices with mode suppression ratios in excess of 35 dB.

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Key concepts: Laser linewidth, Relative intensity noise, Intensity (physics), Optics, Laser, Materials science, Noise (video), Semiconductor laser theory