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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 3 — Mar. 1, 2007
  • pp: 477–483

Dependence of self-pulsation characteristics of multisection index-coupled distributed feedback lasers on section lengths

Sang-Taek Kim, Tae-Young Kim, Boo-Gyoun Kim, and Yoshiaki Nakano  »View Author Affiliations

JOSA B, Vol. 24, Issue 3, pp. 477-483 (2007)

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We investigate the effect of section lengths on the self-pulsation (SP) characteristics of a multisection index-coupled distributed feedback (DFB) laser that is composed of two spectrally detuned DFB sections and a phase-tuning section between them. Compound-cavity modes in multisection DFB lasers can be obtained by the concept of Fabry–Perot cavity modes. The simple equation for a CS number, which represents the number of compound-cavity modes within the stop-band width of a DFB section, is derived. By using the CS number, we were able to predict the SP characteristics such as abrupt changes of SP frequency due to mode hopping. Stable SP characteristics without abrupt changes of SP frequency for the variation of the spectral detuning and the phase shift in a phase-tuning section were obtained in cases with small CS numbers, which can be obtained by adjustment of section lengths.

© 2007 Optical Society of America

OCIS Codes
(140.3490) Lasers and laser optics : Lasers, distributed-feedback
(140.5960) Lasers and laser optics : Semiconductor lasers

ToC Category:
Lasers and Laser Optics

Original Manuscript: May 12, 2006
Revised Manuscript: September 18, 2006
Manuscript Accepted: October 13, 2006
Published: February 15, 2007

Sang-Taek Kim, Tae-Young Kim, Boo-Gyoun Kim, and Yoshiaki Nakano, "Dependence of self-pulsation characteristics of multisection index-coupled distributed feedback lasers on section lengths," J. Opt. Soc. Am. B 24, 477-483 (2007)

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