Current Tailoring for Lowering Linewidth Floor

H. Yasaka, M. Fukuda, T. Ikegami

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)


The linewidth floor of a DFB laser observed in the linewidth/ optical output power relation is an unresolved issue. It is found experimentally that the linewidth floor and linewidth rebroadening occurs in conjunction with spatial hole-burning along the lasing axis. Tailoring the current distribution along the lasing axis by using a three-terminal DFB laser can reduce the linewidth floor.

Original languageEnglish
Pages (from-to)760-762
Number of pages3
JournalElectronics Letters
Issue number12
Publication statusPublished - 1988


  • Optical properties of substances
  • Semiconductor lasers


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