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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry M. Van Driel
  • Vol. 25, Iss. 10 — Oct. 1, 2008
  • pp: 1673–1677

Surface plasmon-polariton Mach–Zehnder refractive index sensor

Galina Nemova, Andrey V. Kabashin, and Raman Kashyap  »View Author Affiliations

JOSA B, Vol. 25, Issue 10, pp. 1673-1677 (2008)

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We present what we believe is a novel theoretical scheme for phase interrogation of a planar refractive index sensor based on a surface plasmon polariton (SPP) excited with a Bragg grating. The device is a Mach–Zehnder interferometer (MZI), which offers a simple integrated optical solution to monitor relative phase variations in waveguides. The principle of operation for this device is based on the significant phase change in the field of a waveguide mode transmitted through a grating. This phase change occurs during the SPP excitation and is caused by the change in the refractive index of the sensed layer in contact with the metal layer supporting the SPP, operating at commercialized telecommunications wavelengths.

© 2008 Optical Society of America

OCIS Codes
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(130.6010) Integrated optics : Sensors
(230.7390) Optical devices : Waveguides, planar

ToC Category:
Optical Devices

Original Manuscript: May 30, 2008
Manuscript Accepted: July 13, 2008
Published: September 18, 2008

Galina Nemova, Andrey V. Kabashin, and Raman Kashyap, "Surface plasmon-polariton Mach-Zehnder refractive index sensor," J. Opt. Soc. Am. B 25, 1673-1677 (2008)

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