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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 14, Iss. 8 — Apr. 17, 2006
  • pp: 3312–3317

Self-mixing speckle interference in DFB lasers

Daofu Han, Ming Wang, and Junping Zhou  »View Author Affiliations

Optics Express, Vol. 14, Issue 8, pp. 3312-3317 (2006)

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Theoretical analysis and experimental results of self-mixing speckle interference in a distributed feedback (DFB) laser are presented in this paper. Self-mixing speckle interference occurs when external optical feedback comes from a moving rough surface. Dynamic output variations in the DFB laser as well as their probability density functions (PDFs) are analyzed on the basis of speckle theory and self-mixing interference in the DFB laser. Numeric simulations and experiments are in agreement with each other. The both results show that self-mixing speckle interference in DFB laser can be used to measure velocity of target.

© 2006 Optical Society of America

OCIS Codes
(030.6140) Coherence and statistical optics : Speckle
(140.3490) Lasers and laser optics : Lasers, distributed-feedback
(260.3160) Physical optics : Interference

ToC Category:
Lasers and Laser Optics

Original Manuscript: January 3, 2006
Revised Manuscript: April 6, 2006
Manuscript Accepted: April 6, 2006
Published: April 17, 2006

Daofu Han, Ming Wang, and Junping Zhou, "Self-mixing speckle interference in DFB lasers," Opt. Express 14, 3312-3317 (2006)

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