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Multiple Wavelength-Channels in SPP Waveguides for Optical Communication |
| ZHANG Zhi-You1;HUANG Peng1;GUO Xiao-Wei;WANG Jing-Quan1;FANG Lang1;DU Jing-Lei1;LUO Xian-Gang2;DU Chun-Lei2 |
| 1School of Physical Science and Technology, Sichuan University, Chengdu 6100642State Key Laboratory of Optical Technologies for Microfabrication, Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu 610209 |
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| Cite this article: |
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ZHANG Zhi-You, HUANG Peng, GUO Xiao-Wei et al 2008 Chin. Phys. Lett. 25 996-999 |
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Abstract Surface plasmon polaritons (SPPs) can be excited, meanwhile some peculiar optical phenomena will appear when light irradiates metal structures under some conditions. Based on photonic band gap theory, in this Letter we present a kind of SPP waveguide with multiple wavelength-channels. By using the Bragg effect and introducing some geometric defect layers into a
quasi-periodic metal heterowaveguide, the multiple SPP forbidden bands (SPFBs) in a given waveband can be generated, and the multiple SPP pass bands (SPPBs) with narrow bandwidth in each SPFB can be realized. The SPP propagation in metal heterowaveguide is calculated by FDTD and transfer matrix methods. By selecting appropriate thickness, position and the number of defect layers, two SPPBs can be achieved in the SPFBs around 1.31 and 1.55μm simultaneously.
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42.82.Et
42.25.-p
78.67.-n
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Received: 23 October 2007
Published: 27 February 2008
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| PACS: |
42.82.Et
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(Waveguides, couplers, and arrays)
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42.25.-p
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(Wave optics)
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78.67.-n
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(Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures)
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