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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 7, Iss. 7 — Jun. 25, 2012

Fluidic sensor based on the side-opened and suspended dual-core fiber

Guanjun Wang, Jiansheng Liu, Zheng Zheng, Yi Yang, Jing Xiao, Shuna Li, and Yusheng Bian  »View Author Affiliations

Applied Optics, Vol. 51, Issue 15, pp. 3096-3103 (2012)

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For accelerating the response and enhancing the sensitivity simultaneously, a novel fluidic sensor based on a side-opened and suspended dual-core fiber and dual-beam interference detection mechanism is first explored and analyzed here. The side opening ensures a fast response by allowing fluidic analyte to approach the fiber core laterally. The dual-beam Mach–Zehnder interferemetry provides a relative higher sensitivity. Calculation results show that a sensitivity of 2.1×106 refractive index unit (RIU) within a response time of 10 s could be achievable, which reflects its potential impact on constructing a fluid refractometer for fast-response and high-sensitivity detection. Moreover, the relationship of the sensing sensitivity and the detected dynamic range of this suspended dual-core fiber structure, polarization, and the transmitting waveband are also analyzed.

© 2012 Optical Society of America

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(060.4005) Fiber optics and optical communications : Microstructured fibers

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: November 18, 2011
Revised Manuscript: February 19, 2012
Manuscript Accepted: February 21, 2012
Published: May 18, 2012

Virtual Issues
Vol. 7, Iss. 7 Virtual Journal for Biomedical Optics

Guanjun Wang, Jiansheng Liu, Zheng Zheng, Yi Yang, Jing Xiao, Shuna Li, and Yusheng Bian, "Fluidic sensor based on the side-opened and suspended dual-core fiber," Appl. Opt. 51, 3096-3103 (2012)

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