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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 31, Iss. 7 — Jul. 1, 2014
  • pp: 1614–1619

One-dimensional finite-elements method for the analysis of whispering gallery microresonators

Ebrahim Bagheri-Korani, Mahmoud Mohammad-Taheri, and Mahmoud Shahabadi  »View Author Affiliations


JOSA A, Vol. 31, Issue 7, pp. 1614-1619 (2014)
http://dx.doi.org/10.1364/JOSAA.31.001614


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Abstract

By taking advantage of axial symmetry of the planar whispering gallery microresonators, the three-dimensional (3D) problem of the resonator is reduced to a two-dimensional (2D) one; thus, only the cross section of the resonator needs to be analyzed. Then, the proposed formulation, which works based on a combination of the finite-elements method (FEM) and Fourier expansion of the fields, can be applied to the 2D problem. First, the axial field variation is expressed in terms of a Fourier series. Then, a FEM method is applied to the radial field variation. This formulation yields an eigenvalue problem with sparse matrices and can be solved using a well-known numerical technique. This method takes into account both the radiation loss and the dielectric loss; hence, it works efficiently either for high number or low number modes. Efficiency of the method was investigated by comparison of the results with those of commercial software.

© 2014 Optical Society of America

OCIS Codes
(230.0230) Optical devices : Optical devices
(230.5750) Optical devices : Resonators

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: January 28, 2014
Revised Manuscript: April 29, 2014
Manuscript Accepted: May 8, 2014
Published: June 26, 2014

Citation
Ebrahim Bagheri-Korani, Mahmoud Mohammad-Taheri, and Mahmoud Shahabadi, "One-dimensional finite-elements method for the analysis of whispering gallery microresonators," J. Opt. Soc. Am. A 31, 1614-1619 (2014)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-31-7-1614

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