Up to 15 dB improvement in second harmonic distortion in complex-coupled DFB semiconductor lasers

D. Novak, A. J. Lowery

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4 Citations (Scopus)


The Letter numerically demonstrates that a pure gain-coupled distributed feedback (GC-DFB) laser exhibits more than 12dB lower second harmonic distortion than an equivalent indexcoupled DFB laser at a modulation frequency of lGHz. Furthermore, the addition of index coupling to the gain-coupled device can give a further 3dB reduction in the distortion level.

Original languageEnglish
Pages (from-to)1954-1956
Number of pages3
JournalElectronics Letters
Issue number22
Publication statusPublished - 1 Jan 1993
Externally publishedYes


  • Distributed feedback lasers
  • Harmonic distortion

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