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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 12 — Apr. 20, 2007
  • pp: 2189–2196

Triple-sensor multiplexed frequency-modulated continuous-wave interferometric fiber-optic displacement sensor

Jesse Zheng  »View Author Affiliations


Applied Optics, Vol. 46, Issue 12, pp. 2189-2196 (2007)
http://dx.doi.org/10.1364/AO.46.002189


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Abstract

A triple-sensor multiplexed fiber-optic displacement sensor, which can measure the displacements of three different objects or the three-dimensional displacement of a single object, is introduced. The sensor is based on the principles of optical frequency-modulated continuous-wave interference and frequency-division multiplexing. The beat signals from the individual sensors are assigned in the frequency domain and separated with different electrical bandpass filters. The displacements of objects can be determined simultaneously by detecting the phase shifts of the corresponding signals. The cross talk between the individual sensors is evaluated, and an accuracy of 0.08   μm in a dynamic range of 1000   μm is achieved.

© 2007 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.4230) Fiber optics and optical communications : Multiplexing
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: October 13, 2006
Revised Manuscript: December 21, 2006
Manuscript Accepted: January 17, 2007
Published: April 3, 2007

Citation
Jesse Zheng, "Triple-sensor multiplexed frequency-modulated continuous-wave interferometric fiber-optic displacement sensor," Appl. Opt. 46, 2189-2196 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-12-2189


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