| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Bending Loss Calculation of a Dielectric-Loaded Surface Plasmon Polariton Waveguide Structure |
| YUE Song, LI Zhi, CHEN Jian-Jun, GONG Qi-Huang |
| State Key Laboratory for Mesoscopic Physics and Department of Physics, Peking University, Beijing 100871 |
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| Cite this article: |
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YUE Song, LI Zhi, CHEN Jian-Jun et al 2010 Chin. Phys. Lett. 27 027303 |
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Abstract Based on full 3D finite element method simulations, the transmission of a dielectric-loaded surface plasmon polariton waveguide (DLSPPW) based 1/4 circle is calculated for a 90° bend model and a 270° bend model, respectively. It is found that the 270° bend model gives almost pure bending loss while the 90° bend model contains additional coupling loss. The models are applied to deduce the loss and unloaded quality factor of DLSPPW based waveguide ring resonators (WRRs) and the results of the 270° bend model agree well with direct simulating results of the WRRs. Thus the 270° bend model gives a fast and simple way to calculate bending loss and it is helpful for WRR design because no wavelength scan is needed.
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| Keywords:
73.20.Mf
52.40.Fd
02.60.Cb
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Received: 18 August 2009
Published: 08 February 2010
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| PACS: |
73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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52.40.Fd
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(Plasma interactions with antennas; plasma-filled waveguides)
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02.60.Cb
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(Numerical simulation; solution of equations)
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