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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 35, Iss. 7 — Mar. 1, 1996
  • pp: 1143–1150

Multiplex in-cylinder pressure measurement utilizing an optical fiber with specific refractive-index composition

M. Komachiya, H. Sonobe, S. Oho, M. Kurita, T. Nakazawa, and T. Sasayama  »View Author Affiliations


Applied Optics, Vol. 35, Issue 7, pp. 1143-1150 (1996)
http://dx.doi.org/10.1364/AO.35.001143


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Abstract

An approach to multiplex in-cylinder pressure measurement that utilizes a single-mode optical fiber with specific refractive-index composition has been proposed. The sensing fiber has been designed to show a certain amount of optical power loss with a small change in the fiber-local-bend radius. Along with pressure-transferring diaphragms the sensing fiber was embedded into the head gasket of a four-cylinder gasoline engine. The internal-pressure change in each combustion chamber was detected on the basis of bending power loss in the fiber. Combustion pressure peaks for each cylinder were clearly observed.

© 1996 Optical Society of America

History
Original Manuscript: August 28, 1995
Revised Manuscript: October 30, 1995
Published: March 1, 1996

Citation
M. Komachiya, H. Sonobe, S. Oho, M. Kurita, T. Nakazawa, and T. Sasayama, "Multiplex in-cylinder pressure measurement utilizing an optical fiber with specific refractive-index composition," Appl. Opt. 35, 1143-1150 (1996)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-35-7-1143

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