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Chinese Optics Letters

Chinese Optics Letters

| PUBLISHED MONTHLY BY CHINESE LASER PRESS AND DISTRIBUTED BY OSA

  • Vol. 9, Iss. 10 — Oct. 10, 2011
  • pp: 100604–

Compact FBG diaphragm accelerometer based on L-shaped rigid cantilever beam

Yinyan Weng, Xueguang Qiao, Zhongyao Feng, Manli Hu, Jinghua Zhang, and Yang Yang  »View Author Affiliations


Chinese Optics Letters, Vol. 9, Issue 10, pp. 100604- (2011)


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Abstract

A compact fiber Bragg grating (FBG) diaphragm accelerometer based on L-shaped rigid cantilever beam is proposed and experimentally demonstrated. The sensing system is based on the integration of a flat diaphragm and an L-shaped rigid cantilever beam. The FBG is pre-tensioned and the two side points are fixed, efficiently avoiding the unwanted chirp effect of grating. Dynamic vibration measurement shows that the proposed FBG diaphragm accelerometer provides a wide frequency response range (0-110 Hz) and an extremely high sensitivity (106.5 pm/g), indentifying it as a good candidate for embedding structural health monitoring and seismic wave measurement.

© 2011 Chinese Optics Letters

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings
(280.4788) Remote sensing and sensors : Optical sensing and sensors

Citation
Yinyan Weng, Xueguang Qiao, Zhongyao Feng, Manli Hu, Jinghua Zhang, and Yang Yang, "Compact FBG diaphragm accelerometer based on L-shaped rigid cantilever beam," Chin. Opt. Lett. 9, 100604- (2011)
http://www.opticsinfobase.org/col/abstract.cfm?URI=col-9-10-100604

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