Facet influence on wavelength tunability and linewidth chirp in        InGaAs/InAlGaAs quantum-well distributed feedback lasers under high-bit-rate modulation

Hartmut Hillmer; Stefan Hansmann; Herbert Burkhard

doi:10.1117/12.210767

1 October 1995 Facet influence on wavelength tunability and linewidth chirp in InGaAs/InAlGaAs quantum-well distributed feedback lasers under high-bit-rate modulation

Hartmut Hillmer, Stefan Hansmann, Herbert Burkhard

Author Affiliations +

Optical Engineering, Vol. 34, Issue 10, (October 1995). https://doi.org/10.1117/12.210767

Abstract

The strong influence of facet properties on wavelength shift and wavelength chirp is studied in uncoated and coated distributed feedback (DFB) lasers. A detailed comparison is performed between various experimental laser data (spectra, electronic and thermal wavelength tunability, relative intensity noise, linewidth) and the results of model calculations combining rate equations and the transfer matrix method. From experimental data of different lasers, a set of physical DFB laser parameters is determined. We succeeded in describing all the experimental data of different lasers by the same parameter set. By use of this set and a large signal analysis we found that the wavelength chirp and the wavelength shift resulting from electronic effects including spatial hole burning varies considerably for different end facet phases (EFPs) and facet coatings, but otherwise identical DFB laser geometry.

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Hartmut Hillmer, Stefan Hansmann, and Herbert Burkhard "Facet influence on wavelength tunability and linewidth chirp in InGaAs/InAlGaAs quantum-well distributed feedback lasers under high-bit-rate modulation," Optical Engineering 34(10), (1 October 1995). https://doi.org/10.1117/12.210767

Published: 1 October 1995

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