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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 8 — Apr. 9, 2012
  • pp: 8598–8607

Self-mixing interference measurement system of a fiber ring laser with ultra-narrow linewidth

Liang Lu, Jingyu Yang, Longhua Zhai, Rui Wang, Zhigang Cao, and Benli Yu  »View Author Affiliations

Optics Express, Vol. 20, Issue 8, pp. 8598-8607 (2012)

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A novel device for self-mixing interference measurement based on the fiber ring laser with ultra-narrow linewidth was investigated for the first time. In order to achieve requirement of our measurement system, a saturable-absorber which consists of a segment un-pumped erbium-doped fiber and a fiber Bragg grating is employed to provide a fine mode selection and guarantee the ultra-narrow linewidth operation. Results demonstrate that the signal-to-noise ratio of the self-mixing interference signal could be enhanced from 18.01 dB to 38.35 dB by inserting a saturable-absorber in the laser cavity. It is in good agreement with the theoretical analysis and proved potential using in self-mixing interference measurement system for high sensitivity and remote measurement.

© 2012 OSA

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(140.3560) Lasers and laser optics : Lasers, ring
(280.3420) Remote sensing and sensors : Laser sensors

ToC Category:

Original Manuscript: February 7, 2012
Revised Manuscript: March 19, 2012
Manuscript Accepted: March 26, 2012
Published: March 28, 2012

Liang Lu, Jingyu Yang, Longhua Zhai, Rui Wang, Zhigang Cao, and Benli Yu, "Self-mixing interference measurement system of a fiber ring laser with ultra-narrow linewidth," Opt. Express 20, 8598-8607 (2012)

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