Threshold Condition of Single-Mode Gain-Coupled DFB Lasers

  • Jianyao Chen
  • Alain Champagne
  • Roman Maciejko
  • Toshihiko Makino

Abstract

Stable single-mode lasers with narrow linewidth are highly desirable in advanced fiber optic systems. As one of the effective approaches to obtain single mode oscillation in DFB lasers, a gain grating has attracted considerable attention in recent years. Since the coupling strength of a gain grating is gain-dependent, the study of the threshold condition of gain-coupled DFB lasers is much more complex than that of index-coupled DFB lasers.12 Such a study is also crucial for the determination of the conditions needed for increasing the single mode yield of gain-coupled DFB lasers.

Keywords

High Order Mode Bloch Wave Bragg Wavelength Threshold Gain Distribute Feedback Laser 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer Science+Business Media New York 1997

Authors and Affiliations

  • Jianyao Chen
    • 1
  • Alain Champagne
    • 1
  • Roman Maciejko
    • 1
  • Toshihiko Makino
    • 2
  1. 1.Optoelectronics Laboratory, Department of Engineering PhysicsÉcole PolytechniqueMontréalCanada
  2. 2.Nortel Technology (BNR)NepeanCanada

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