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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 25, Iss. 10 — Oct. 1, 2008
  • pp: 1771–1775

Surface-plasmon-resonance-like fiber-based sensor at terahertz frequencies

Alireza Hassani, Alexandre Dupuis, and Maksim Skorobogatiy  »View Author Affiliations


JOSA B, Vol. 25, Issue 10, pp. 1771-1775 (2008)
http://dx.doi.org/10.1364/JOSAB.25.001771


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Abstract

Terahertz (THz) plasmonlike excitation on top of a thin ferroelectric polyvinylidene fluoride layer covering a solid-core polymeric Bragg fiber and facing liquid analyte is demonstrated theoretically. In a view of designing a fiber-based sensor of the analyte refractive index, phase matching of a THz plasmonlike mode with the fundamental core guided mode of a fiber is then demonstrated for the most challenging case of low refractive index analytes. A novel sensing methodology based on the core mode anomalous dispersion is proposed. Similarly to the surface plasmon resonance sensors in the visible, we show the possibility of designing high-sensitivity sensors in the THz regime with a resolution of 2 × 10 4 in refractive index change.

© 2008 Optical Society of America

OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(130.6010) Integrated optics : Sensors
(240.6680) Optics at surfaces : Surface plasmons
(040.2235) Detectors : Far infrared or terahertz
(060.5295) Fiber optics and optical communications : Photonic crystal fibers

ToC Category:
Detectors

History
Original Manuscript: May 14, 2008
Revised Manuscript: July 28, 2008
Manuscript Accepted: August 1, 2008
Published: September 30, 2008

Virtual Issues
Vol. 3, Iss. 12 Virtual Journal for Biomedical Optics

Citation
Alireza Hassani, Alexandre Dupuis, and Maksim Skorobogatiy, "Surface-plasmon-resonance-like fiber-based sensor at terahertz frequencies," J. Opt. Soc. Am. B 25, 1771-1775 (2008)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-25-10-1771

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