Nonlinear distortion suppression in directly modulated DFB lasers by sidemode optical injection

J. H. Seo, Y. K. Seo, W. Y. Choi

Research output: Contribution to journalConference article

9 Citations (Scopus)


We demonstrate a new method of suppressing nonlinear distortions in directly modulated DFB lasers. In our scheme, external laser light is injected into the sidemode of the DFB laser. Using this scheme, we achieved significant reduction in nonlinear distortions such as the second harmonic distortion (SHD), second order intermodulation distortion (IMD2), and third order intermodulation distortion (IMD3). In addition, we enhanced the external light detuning range.

Original languageEnglish
Pages (from-to)555-558
Number of pages4
JournalIEEE MTT-S International Microwave Symposium Digest
Publication statusPublished - 2001 Dec 1
EventInternational Microwave Symposium Digest IEEE-MTT-S 2001 - Phoenix, AZ, United States
Duration: 2001 May 202001 May 25


All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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