Nature of wavelength chirping in directly modulated semiconductor lasers

T. L. Koch, J. E. Bowers

Research output: Contribution to journalArticlepeer-review

255 Scopus citations


Relations are derived concerning the inherent connection between frequency deviations and the optical power waveform of a directly modulated semiconductor laser, providing for the first time a quantitative assessment of inherent optical fibre dispersion penalties of directly modulated lasers. The relations also indicate that control of chirp involves only the control of the intensity modulation characteristics and proper current drive of semiconductor lasers. Experimental measurement of FM and IM characteristics of a 1.55 µm DFB laser support the results.

Original languageEnglish (US)
Pages (from-to)1038-1040
Number of pages3
JournalElectronics Letters
StatePublished - Dec 6 1984


  • Lasers and laser applications

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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