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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 15 — Jul. 28, 2014
  • pp: 18757–18769

Spatially continuous distributed fiber optic sensing using optical carrier based microwave interferometry

Jie Huang, Xinwei Lan, Ming Luo, and Hai Xiao  »View Author Affiliations

Optics Express, Vol. 22, Issue 15, pp. 18757-18769 (2014)

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This paper reports a spatially continuous distributed fiber optic sensing technique using optical carrier based microwave interferometry (OCMI), in which many optical interferometers with the same or different optical path differences are interrogated in the microwave domain and their locations can be unambiguously determined. The concept is demonstrated using cascaded weak optical reflectors along a single optical fiber, where any two arbitrary reflectors are paired to define a low-finesse Fabry-Perot interferometer. While spatially continuous (i.e., no dark zone), fully distributed strain measurement was used as an example to demonstrate the capability, the proposed concept may also be implemented on other types of waveguide or free-space interferometers and used for distributed measurement of various physical, chemical and biological quantities.

© 2014 Optical Society of America

OCIS Codes
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(060.5625) Fiber optics and optical communications : Radio frequency photonics

ToC Category:

Original Manuscript: May 15, 2014
Revised Manuscript: July 15, 2014
Manuscript Accepted: July 18, 2014
Published: July 25, 2014

Jie Huang, Xinwei Lan, Ming Luo, and Hai Xiao, "Spatially continuous distributed fiber optic sensing using optical carrier based microwave interferometry," Opt. Express 22, 18757-18769 (2014)

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