Dual-Mode Behavior in Multi-Section DFB Semiconductor Lasers with Laterally-Coupled Ridge-Waveguide Surface Gratings

T. Uusitalo; H. Virtanen; J. Viheriälä; J. Salmi; A. T. Aho; M. Dumitrescu

2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference
(Optica Publishing Group, 2015),
paper CB_P_26

Dual-Mode Behavior in Multi-Section DFB Semiconductor Lasers with Laterally-Coupled Ridge-Waveguide Surface Gratings

T. Uusitalo, H. Virtanen, J. Viheriälä, J. Salmi, A. T. Aho, and M. Dumitrescu

The European Conference on Lasers and Electro-Optics 2015

Munich Germany
21–25 June 2015
ISBN: 978-1-4673-7475-0

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T. Uusitalo, H. Virtanen, J. Viheriälä, J. Salmi, A. T. Aho, and M. Dumitrescu, "Dual-Mode Behavior in Multi-Section DFB Semiconductor Lasers with Laterally-Coupled Ridge-Waveguide Surface Gratings," in 2015 European Conference on Lasers and Electro-Optics - European Quantum Electronics Conference, (Optica Publishing Group, 2015), paper CB_P_26.

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Abstract

We present a systematic study of novel multi-section distributed feedback (DFB) lasers with laterally coupled ridge waveguide (LC-RWG) surface gratings. The dual-mode behavior in terms of mode stability, balance, and spectral separation has been experimentally studied. The results correspond to the ones obtained from simulations employing a time-domain travelling-wave (TDTW) model [1]. The simulations provide valuable information on the longitudinal carrier and photon density variations and give new insights into the dual-mode dynamics observed in the measured devices.

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