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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 5, Iss. 10 — Jul. 19, 2010

High-sensitivity fiber-loop ringdown evanescent-field index sensors using single-mode fiber

Chuji Wang and Chamini Herath  »View Author Affiliations


Optics Letters, Vol. 35, Issue 10, pp. 1629-1631 (2010)
http://dx.doi.org/10.1364/OL.35.001629


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Abstract

We combine the evanescent-field scattering sensing mechanism with the fiber-loop ringdown detection scheme to create a new type of fiber optic index sensor using partially cladded single-mode fiber as a sensing element. A detection limit for an optical index change of 3.2 × 10 5 is demonstrated in the initial examination by using certified refractive index oils and laboratory-made sodium chloride solutions. This is the highest sensitivity for a fiber optic index sensor to date (to our knowledge) without using any chemical coating, delicate fiber components, and/or sophisticated architecture at the sensor head. A potential detection limit can be of the order of 10 6 .

© 2010 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(290.3030) Scattering : Index measurements
(290.5820) Scattering : Scattering measurements

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: March 4, 2010
Revised Manuscript: April 10, 2010
Manuscript Accepted: April 12, 2010
Published: May 6, 2010

Virtual Issues
Vol. 5, Iss. 10 Virtual Journal for Biomedical Optics

Citation
Chuji Wang and Chamini Herath, "High-sensitivity fiber-loop ringdown evanescent-field index sensors using single-mode fiber," Opt. Lett. 35, 1629-1631 (2010)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-35-10-1629


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