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Optics Letters

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  • Editor: Anthony J. Campillo
  • Vol. 30, Iss. 22 — Nov. 15, 2005
  • pp: 3000–3002

Simultaneous measurement of refractive index and temperature based on a reflection-mode long-period grating and an intrinsic Fabry-Perot interferometer sensor

Dae Woong Kim, Fabin Shen, Xiaopei Chen, and Anbo Wang  »View Author Affiliations


Optics Letters, Vol. 30, Issue 22, pp. 3000-3002 (2005)
http://dx.doi.org/10.1364/OL.30.003000


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Abstract

We have demonstrated a single fiber probe for simultaneous measurement of external refractive index and temperature based on two interferometers: a reflection-mode long-period grating (LPG) for refractometry and an intrinsic Fabry-Perot interferometer (IFPI) for temperature measurement. Since the output signal of the combined structure is a superposition of signals produced by both sensors, which have different spatial frequencies, the original signals needed for the index and temperature measurements can be separated and recovered through digital filters.

© 2005 Optical Society of America

OCIS Codes
(050.2230) Diffraction and gratings : Fabry-Perot
(050.2770) Diffraction and gratings : Gratings
(060.2370) Fiber optics and optical communications : Fiber optics sensors

ToC Category:
Fiber Optics and Optical Communications

Citation
Dae Woong Kim, Fabin Shen, Xiaopei Chen, and Anbo Wang, "Simultaneous measurement of refractive index and temperature based on a reflection-mode long-period grating and an intrinsic Fabry-Perot interferometer sensor," Opt. Lett. 30, 3000-3002 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-22-3000


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References

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