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Optics Letters

Optics Letters


  • Vol. 26, Iss. 9 — May. 1, 2001
  • pp: 590–592

Distributed pressure sensor with a mode-locked fiber-ring laser

Shinji Yamashita and Kazuo Hotate  »View Author Affiliations

Optics Letters, Vol. 26, Issue 9, pp. 590-592 (2001)

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We propose and demonstrate a novel distributed fiber-laser pressure sensor. A transverse pressure position is located by determination of the free-spectral range shift induced by mode coupling in an intracavity polarization-maintaining fiber. We demonstrate that the stability and the spatial resolution of the sensor can be enhanced drastically by introduction of a novel mode-locking technique. Resolution of 54 cm in the 150-m range can be realized.

© 2001 Optical Society of America

OCIS Codes
(130.6010) Integrated optics : Sensors
(140.3560) Lasers and laser optics : Lasers, ring
(140.4050) Lasers and laser optics : Mode-locked lasers

Shinji Yamashita and Kazuo Hotate, "Distributed pressure sensor with a mode-locked fiber-ring laser," Opt. Lett. 26, 590-592 (2001)

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