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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 22 — Oct. 24, 2011
  • pp: 21467–21474

Balanced polarization maintaining fiber Sagnac interferometer vibration sensor

Kenji Wada, Hirokazu Narui, Daiki Yamamoto, Tetsuya Matsuyama, and Hiromichi Horinaka  »View Author Affiliations

Optics Express, Vol. 19, Issue 22, pp. 21467-21474 (2011)

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To achieve a nearly zero-delay operating point in a polarization-maintaining (PM) fiber Sagnac interferometer, two identical PM fibers were incorporated so that their two main axes were orthogonally coupled to each other. A simple fiber vibration sensor system was constructed with a light emitting diode and a balanced PM fiber Sagnac interferometer, in which one of the PM fibers was used as a sensing cable and the other as a reference cable. The vibration sensor was confirmed to be temperature-compensated and generated a phase shift per unit length and unit strain of the sensor of 4.7 milliradian / (m·μɛ) when mechanical vibrations with 1 kHz sinusoidal and triangular waves were stably observed under an input power of 10 μW.

© 2011 OSA

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2420) Fiber optics and optical communications : Fibers, polarization-maintaining
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(120.4820) Instrumentation, measurement, and metrology : Optical systems
(230.3670) Optical devices : Light-emitting diodes

ToC Category:

Original Manuscript: August 22, 2011
Revised Manuscript: October 1, 2011
Manuscript Accepted: October 3, 2011
Published: October 17, 2011

Kenji Wada, Hirokazu Narui, Daiki Yamamoto, Tetsuya Matsuyama, and Hiromichi Horinaka, "Balanced polarization maintaining fiber Sagnac interferometer vibration sensor," Opt. Express 19, 21467-21474 (2011)

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