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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 9 — Apr. 27, 2009
  • pp: 7549–7555

A subwavelength coupler-type MIM optical filter

Qin Zhang, Xu-Guang Huang, Xian-Shi Lin, Jin Tao, and Xiao-Ping Jin  »View Author Affiliations


Optics Express, Vol. 17, Issue 9, pp. 7549-7555 (2009)
http://dx.doi.org/10.1364/OE.17.007549


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Abstract

A novel subwavelength surface plasmon polaritons optical filter based on an incompletely directional coupler is proposed and numerically simulated by using the finite difference time domain method with perfectly matched layer absorbing boundary condition. An analytical solution for the resonant condition of the structure is derived by means of the cavity theory. Both analytical and simulative results reveal that the resonant wavelengths are proportional to the length of the slit segment, inversely proportional to the antinode number of a standing wave in the segment, and are related to the slit width and the gap between the two slits. The analytical solution being consistent with the numerical simulation verifies the feasibility of the concept of the new filter structure.

© 2009 OSA

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(240.6680) Optics at surfaces : Surface plasmons
(230.4555) Optical devices : Coupled resonators
(130.7408) Integrated optics : Wavelength filtering devices

ToC Category:
Optics at Surfaces

History
Original Manuscript: March 11, 2009
Revised Manuscript: April 10, 2009
Manuscript Accepted: April 18, 2009
Published: April 22, 2009

Citation
Qin Zhang, Xu-Guang Huang, Xian-Shi Lin, Jin Tao, and Xiao-Ping Jin, "A subwavelength coupler-type MIM
optical filter," Opt. Express 17, 7549-7555 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-9-7549


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References

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