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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Editor: Stephen A. Burns
  • Vol. 23, Iss. 2 — Feb. 1, 2006
  • pp: 461–467

Integral equation analysis of scattering by a spherical microparticle coupled to a subwavelength-diameter wire waveguide

Ioannis D. Chremmos and Nikolaos K. Uzunoglu  »View Author Affiliations

JOSA A, Vol. 23, Issue 2, pp. 461-467 (2006)

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A rigorous integral equation analysis of the coupling between a fiber waveguide and an adjacent spherical particle is developed. The solution is obtained by applying the entire-domain Galerkin technique, based on Mie-type spherical wave expansion of the field in the sphere and the use of dyadic Green’s function of the fiber waveguide. The conversion between cylindrical and spherical wave functions is done through classic analytical formulas. The analysis is applied to numerically investigate transmission through silica wires of subwavelength diameter in the presence of particles of comparable size. The results show the possibility of sensing microparticles through the reduction of transmitted power, which is maximum for certain critical values of the fiber diameter.

© 2006 Optical Society of America

OCIS Codes
(000.3860) General : Mathematical methods in physics
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(230.5440) Optical devices : Polarization-selective devices
(230.5750) Optical devices : Resonators
(290.4020) Scattering : Mie theory
(290.5850) Scattering : Scattering, particles

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: June 3, 2005
Manuscript Accepted: July 15, 2005

Virtual Issues
Vol. 1, Iss. 3 Virtual Journal for Biomedical Optics

Ioannis D. Chremmos and Nikolaos K. Uzunoglu, "Integral equation analysis of scattering by a spherical microparticle coupled to a subwavelength-diameter wire waveguide," J. Opt. Soc. Am. A 23, 461-467 (2006)

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