Effect of the Grating Phase at the Cleaved Facet on Dfb Laser Properties

Takashi Matsuoka, Haruo Nagai, Yoshio Noguchi, Yoshio Suzuki, Yoshihiro Kawaguchi

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


The importance of the relative positions of the reflectors and grating in InP/InGaAsP DFB laser diodes in determining laser thresholds and oscillation wavelength is directly verified for the first time using a precisely controlled ion beam etching technique. Periodic variation in both the threshold current value and oscillation wavelength as a function of etching depth is observed, and the period closely coincides with one half the oscillation wavelength in the laser cavity.

Original languageEnglish
Pages (from-to)L138-L140
JournalJapanese journal of applied physics
Issue number3
Publication statusPublished - 1984 Mar
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


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