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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 11, Iss. 2 — Feb. 1, 2013
  • pp: 020602–

Robust 3-component optical fiber accelerometer for seismic monitoring

Dongshan Jiang, Faxiang Zhang, Wentao Zhang, Feng Li, and Fang Li  »View Author Affiliations


Chinese Optics Letters, Vol. 11, Issue 2, pp. 020602- (2013)


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Abstract

A robust cantilever-based push-pull 3-component (3-C) optical fiber accelerometer is proposed and experimentally demonstrated. Sensitivity and resonance frequency can be enhanced simultaneously by increasing the number of turns of an optical fiber without increasing the accelerometer size at the mass of a certain value. The calibration results show that axis sensitivity is 45 dB (re: 0 dB = 1 rad/g), with a fluctuation less than 0.9 dB in a frequency bandwidth of 10-450 Hz. The cross sensitivity is approximately 15 dB, with a fluctuation less than 1.2 dB in a frequency bandwidth of 10-450 Hz. The crosstalk reaches up to 30 dB. Fluctuation of the responses of the acceleration sensitivity of different components is less than 0.7 dB over a frequency bandwidth of 10 -450 Hz, which proves the good consistency of the 3-C optical fiber accelerometer. By usingan all-metal structure is expected to improve the reliability of the designed accelerometer for long-term use in harsh environments. These desirable features show that the proposed 3-C optical fiber accelerometer is satisfactory for seismic wave monitoringin oil and gas exploration.

© 2013 Chinese Optics Letters

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.1155) Fiber optics and optical communications : All-optical networks
(280.4788) Remote sensing and sensors : Optical sensing and sensors

Citation
Dongshan Jiang, Faxiang Zhang, Wentao Zhang, Feng Li, and Fang Li, "Robust 3-component optical fiber accelerometer for seismic monitoring," Chin. Opt. Lett. 11, 020602- (2013)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-11-2-020602


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