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Optics Letters

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  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 6 — Mar. 15, 2014
  • pp: 1593–1596

Two-core transversally chirped microstructured optical fiber refractive index sensor

Pedro Torres, Erick Reyes-Vera, Antonio Díez, and Miguel V. Andrés  »View Author Affiliations


Optics Letters, Vol. 39, Issue 6, pp. 1593-1596 (2014)
http://dx.doi.org/10.1364/OL.39.001593


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Abstract

We present a sensing architecture consisting of a two-core chirped microstructured optical fiber (MOF) for refractive index sensing of fluids. We show that by introducing a chirp in the hole size, the MOF can be a structure with decoupled cores, forming a Mach–Zehnder interferometer in which the analyte directly modulates the device transmittance by its differential influence on the effective refractive index of each core mode. We show that by filling all fiber holes with analyte, the sensing structure achieves high sensitivity (transmittance changes of 300 per RIU at 1.42) and has the potential for use over a wide range of analyte refractive index.

© 2014 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(060.4005) Fiber optics and optical communications : Microstructured fibers

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: December 18, 2013
Revised Manuscript: February 10, 2014
Manuscript Accepted: February 12, 2014
Published: March 12, 2014

Citation
Pedro Torres, Erick Reyes-Vera, Antonio Díez, and Miguel V. Andrés, "Two-core transversally chirped microstructured optical fiber refractive index sensor," Opt. Lett. 39, 1593-1596 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-6-1593


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