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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 5 — May. 1, 2013
  • pp: 1211–1215

All-fiber vibration sensor based on a Fabry–Perot interferometer and a microstructure beam

Qiang Zhang, Tao Zhu, Yusong Hou, and Kin Seng Chiang  »View Author Affiliations


JOSA B, Vol. 30, Issue 5, pp. 1211-1215 (2013)
http://dx.doi.org/10.1364/JOSAB.30.001211


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Abstract

We demonstrate an all-fiber sensor for low-frequency vibration measurements. The sensor is based on the configuration of a Fabry–Perot interferometer (FPI), where the first mirror of the FPI is a splice joint between a single-mode fiber and a hollow-core fiber (HCF) and the second mirror is the end face of an etched microstructure support beam inserted into the HCF. The support beam consists of a mass block in the middle and can oscillate freely in the HCF when the sensor is subject to vibration. Our experimental sensor using a 60 mm long support beam with a diameter of 35 μm and a mass block of 2.95×108kg can detect vibrations at frequencies lower than 1 Hz with an acceleration resolution of 8.35×107g and a measurement range of ±2.24g. The sensor output varies by only 2.5% when the temperature changes from 20°C to 120°C. The sensor could be embedded in composite material and find applications in harsh environments.

© 2013 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: November 30, 2012
Revised Manuscript: March 7, 2013
Manuscript Accepted: March 18, 2013
Published: April 15, 2013

Citation
Qiang Zhang, Tao Zhu, Yusong Hou, and Kin Seng Chiang, "All-fiber vibration sensor based on a Fabry–Perot interferometer and a microstructure beam," J. Opt. Soc. Am. B 30, 1211-1215 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-5-1211

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