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Optics Letters

Optics Letters


  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 10 — May. 15, 2014
  • pp: 2868–2871

Development of a double fiber probe with a single fiber Bragg grating for dimensional measurement of microholes with high aspect ratios

Jiwen Cui, Kunpeng Feng, Junying Li, and Jiubin Tan  »View Author Affiliations

Optics Letters, Vol. 39, Issue 10, pp. 2868-2871 (2014)

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A fiber Bragg grating (FBG)-based probe is developed by designing a novel double fiber structure to make the probe sensitive to both axial and radial contact displacements. A matched FBG pair interrogation system for the probe is modeled, and the best matched initial condition is found to make the probing system work in the linear and most sensitive mode. Actual measurements of ring gauges and fuel injection nozzles indicate that, for a microhole with an aspect ratio of greater than 141, an axial resolution of 8 nm and a radial resolution of 30 nm can be achieved with the developed probe. It is therefore concluded that the double fiber probe with a single FBG developed can be used to measure high aspect ratio microholes.

© 2014 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
(060.3735) Fiber optics and optical communications : Fiber Bragg gratings

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: March 17, 2014
Revised Manuscript: April 3, 2014
Manuscript Accepted: April 7, 2014
Published: May 8, 2014

Jiwen Cui, Kunpeng Feng, Junying Li, and Jiubin Tan, "Development of a double fiber probe with a single fiber Bragg grating for dimensional measurement of microholes with high aspect ratios," Opt. Lett. 39, 2868-2871 (2014)

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