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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 33, Iss. 6 — Mar. 15, 2008
  • pp: 578–580

Three-core fiber-based shape-sensing application

Libo Yuan, Jun Yang, Chunying Guan, Qiang Dai, and Fengjun Tian  »View Author Affiliations

Optics Letters, Vol. 33, Issue 6, pp. 578-580 (2008)

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By using specially designed three-core fiber, a microstructured light-pattern generator for sensing 3-D shapes has been demonstrated. The square or hexagon grid-interferometric fringe pattern formed by the fiber-optic interferometric grid generator is projected onto an object’s surface. The deformed grid pattern containing information of the object’s surface topography is captured by a CCD camera and is analyzed using 2-D Fourier transforming profilometry. The use of the fiber-optic grid-interferogram technique greatly simplifies the holographic interferometry system, and the carrier grid interferogram can be conveniently generated without the use of excessive auxiliary components or sophisticated experimental devices; moreover, the three-core fiber can be used in very narrow places, owing to its small size. Finally, the square or hexagon grid-interferometric fringe pattern provides a data-fusion ability that could further improve the accuracy of the 3-D shape-sensing results.

© 2008 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.5060) Fiber optics and optical communications : Phase modulation

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: November 20, 2007
Revised Manuscript: January 9, 2008
Manuscript Accepted: January 18, 2008
Published: March 12, 2008

Virtual Issues
Vol. 3, Iss. 4 Virtual Journal for Biomedical Optics

Libo Yuan, Jun Yang, Chunying Guan, Qiang Dai, and Fengjun Tian, "Three-core fiber-based shape-sensing application," Opt. Lett. 33, 578-580 (2008)

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