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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 6 — Mar. 21, 2005
  • pp: 1848–1854

Effects of self-mixing interference on gain-coupled distributed-feedback lasers

Junping Zhou and Ming Wang  »View Author Affiliations

Optics Express, Vol. 13, Issue 6, pp. 1848-1854 (2005)

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The effects of self-mixing interference on gain-coupled (GC) distributed-feedback (DFB) lasers are analyzed. From coupled-wave theory, the oscillation frequency and threshold gain variations are theoretically deduced. The influences on self-mixing from the coupling length coefficient, the linewidth enhancement factor of the GC DFB laser, and the reflection coefficient of the external reflector are discussed along with numerical analysis and are compared with the effects of self-mixing interference of λ/4 phase-shifted DFB lasers and Fabry-Perot (F-P) lasers. Our results show that high-accuracy self-mixing sensors can be obtained with GC DFB lasers.

© 2005 Optical Society of America

OCIS Codes
(140.3490) Lasers and laser optics : Lasers, distributed-feedback
(260.3160) Physical optics : Interference

ToC Category:
Research Papers

Original Manuscript: January 26, 2005
Revised Manuscript: February 16, 2005
Published: March 21, 2005

Junping Zhou and Ming Wang, "Effects of self-mixing interference on gain-coupled distributed-feedback lasers," Opt. Express 13, 1848-1854 (2005)

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