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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 25 — Dec. 8, 2008
  • pp: 20206–20214

Surface Plasmon Resonance-like integrated sensor at terahertz frequencies for gaseous analytes.

Alireza Hassani and Maksim Skorobogatiy  »View Author Affiliations

Optics Express, Vol. 16, Issue 25, pp. 20206-20214 (2008)

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Plasmon-like excitation at the interface between fully polymeric fiber sensor and gaseous analyte is demonstrated theoretically in terahertz regime. Such plasmonic excitation occurs on top of a ~30µm ferroelectric PVDF layer wrapped around a subwavelength porous polymer fiber. In a view of designing a fiber-based sensor of analyte refractive index, phase matching of a plasmon-like mode with the fundamental core guided mode of a low loss porous fiber is then demonstrated for the challenging case of a gaseous analyte. We then demonstrate the possibility of designing high sensitivity sensors with amplitude resolution of 3.4·10-4 RIU, and spectral resolution of 1.3·10-4 RIU in THz regime. Finally, novel sensing methodology based on detection of changes in the core mode dispersion is proposed.

© 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:
Integrated Optics

Original Manuscript: August 8, 2008
Revised Manuscript: November 12, 2008
Manuscript Accepted: November 13, 2008
Published: November 24, 2008

Alireza Hassani and Maksim Skorobogatiy, "Surface plasmon resonance-like integrated sensor at terahertz frequencies for gaseous analytes," Opt. Express 16, 20206-20214 (2008)

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