Spectral and modulation characteristics of tunable multielectrode DBR lasers

Mario F. S. Ferreira; Jose Rodriguez daRocha; Joao Lemos Pinto

doi:10.1117/12.24905

1 January 1991 Spectral and modulation characteristics of tunable multielectrode DBR lasers

Mario F. S. Ferreira, Jose Rodriguez daRocha, Joao Lemos Pinto

Author Affiliations +

Proceedings Volume 1372, Coherent Lightwave Communications: Fifth in a Series; (1991) https://doi.org/10.1117/12.24905
Event: SPIE Microelectronic Interconnect and Integrated Processing Symposium, 1990, San Jose, United States

Abstract

The static tuning and the small-signal modulation characteristics of multielectrode DBR lasers are analysed. A theoretical model is presented to describe in particular the performance of a three electrode DBR laser with two electrodes in the active region and another electrode in the passive DBR region. Several direct modulation schemes are considered and nonlinear gain is taken into account. A nearly flat FM response over several GHz is observed by a nonuniform current injection and modulation of the lower carrier density section in the active region. A perfect cancellation of spurious intensity modulation together with the removal of the FM resonance peak seems to be possible by push-pull modulation of the active section with an appropriate current splitting ratio. However this situation does not provide generally ideal FM characteristics because of the thermal-effects. Tuning without distortion of the FM characteristics is an attractive feature of this device.

Citation Download Citation

Mario F. S. Ferreira, Jose Rodriguez daRocha, and Joao Lemos Pinto "Spectral and modulation characteristics of tunable multielectrode DBR lasers", Proc. SPIE 1372, Coherent Lightwave Communications: Fifth in a Series, (1 January 1991); https://doi.org/10.1117/12.24905

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