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Applied Optics

Applied Optics


  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 35 — Dec. 10, 2011
  • pp: 6526–6535

Using a validated transmission model for the optimization of bundled fiber optic displacement sensors

Erik A. Moro, Michael D. Todd, and Anthony D. Puckett  »View Author Affiliations

Applied Optics, Vol. 50, Issue 35, pp. 6526-6535 (2011)

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A variety of intensity-modulated optical displacement sensor architectures have been proposed for use in noncontacting sensing applications, with one of the most widely implemented architectures being the bundled displacement sensor. To the best of the authors’ knowledge, the arrangement of measurement fibers in previously reported bundled displacement sensors has not been configured with the use of a validated optical transmission model. Such a model has utility in accurately describing the sensor’s performance a priori and thereby guides the arrangement of the fibers within the bundle to meet application-specific performance needs. In this paper, a recently validated transmission model is used for these purposes, and an optimization approach that employs a genetic algorithm efficiently explores the design space of the proposed bundle sensor architecture. From the converged output of the optimization routine, a bundled displacement sensor configuration is designed and experimentally tested, offering linear performance with a sensitivity of 0.066 μm 1 and displacement measurement error of 223 μm over the axial displacement range of 6 8 mm . It is shown that this optimization approach may be generalized to determine optimized bundle configurations that offer high-sensitivity performance, with an acceptable error level, over a variety of axial displacement ranges. This document has been approved by Los Alamos National Laboratory for unlimited public release (LA-UR 11-03413).

© 2011 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.2390) Fiber optics and optical communications : Fiber optics, infrared
(060.2430) Fiber optics and optical communications : Fibers, single-mode
(120.0280) Instrumentation, measurement, and metrology : Remote sensing and sensors
(280.4788) Remote sensing and sensors : Optical sensing and sensors

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: June 17, 2011
Revised Manuscript: August 13, 2011
Manuscript Accepted: August 15, 2011
Published: December 9, 2011

Erik A. Moro, Michael D. Todd, and Anthony D. Puckett, "Using a validated transmission model for the optimization of bundled fiber optic displacement sensors," Appl. Opt. 50, 6526-6535 (2011)

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