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Optics Letters

Optics Letters


  • Vol. 14, Iss. 21 — Nov. 1, 1989
  • pp: 1225–1227

Optical-fiber Fabry–Perot embedded sensor

C. E. Lee, H. F. Taylor, A. M. Markus, and E. Udd  »View Author Affiliations

Optics Letters, Vol. 14, Issue 21, pp. 1225-1227 (1989)

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A reflectively monitored optical-fiber Fabry–Perot interferometer was embedded in a graphite–epoxy composite material. Its performance as a temperature sensor was demonstrated from 20 to 200°C. The change in relative phase shift with temperature, Δϕ/ϕΔT, was measured to be 8.0 × 10−6/°C for this embedded sensor. This value is 4% lower than for one employing a similar fiber in an air ambient. A thermal expansion coefficient for the composite material in the direction of the fiber axis is estimated from these data to be 2.1 × 10−7/°C.

© 1989 Optical Society of America

Original Manuscript: April 19, 1989
Manuscript Accepted: August 13, 1989
Published: November 1, 1989

C. E. Lee, A. M. Markus, E. Udd, and H. F. Taylor, "Optical-fiber Fabry–Perot embedded sensor," Opt. Lett. 14, 1225-1227 (1989)

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