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Static and dynamic properties of InGaAsP-InP distributed feedback lasers-a detailed comparison between experiment and theory

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4 Author(s)
S. Hansmann ; Forschungs- und Technologiezentrum, DBP Telekom, Darmstadt, Germany ; H. Walter ; H. Hillmer ; H. Burkhard

We have investigated the static and dynamic characteristics of phase shifted InGaAsP-InP DFB lasers mainly focusing on a comprehensive comparison between experimental results and numerical simulations. Experimental data of InGaAsP-InP mushroom type DFB lasers have been recorded, such as optical spectra, variations of the mode wavelengths with continuous and pulsed injection current, side mode suppression ratio, relative intensity noise, small signal amplitude modulation, and the transient response to 10 and 15 Gb/s large signal modulation. The theoretical model calculations in this paper are based on the transfer matrix method in combination with a rate equation analysis and take into account longitudinal mode spatial hole burning which is modified by the inhomogeneous current injection resulting from the axially varying Fermi voltage in both the static and the dynamic case. A good agreement between the experimental data and the theoretical simulations has been obtained extracting a set of parameters which consistently describes the measurements of our devices

Published in:

IEEE Journal of Quantum Electronics  (Volume:30 ,  Issue: 11 )