Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 28, Issue 21, Pages 2467-2470Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2016.2601111
Keywords
Surface plasmon polaritons; teeth-shaped waveguide; metal-insulator-metal structure; filter
Funding
- National Natural Science Foundation of China [60907003, 61465004]
- Foundation of NUDT [JC13-02-13]
- Hunan Provincial Natural Science Foundation of China [13JJ3001]
- Program for New Century Excellent Talents in University [NCET-12-0142]
- Guangxi Natural Science Foundation of China [2013GXNSFAA019338]
- Science and Technology Research Key Project of Guangxi Department of Education, China [2013ZD026]
- Innovation Project of GUET Graduate Education [YJCXS201522]
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The transmission characteristics of asymmetrical multi-teeth-shaped plasmonic waveguide structure are investigated theoretically and numerically. The tunable dual flat bandgaps are achieved in our proposed structure. This feature can provide a promising application for plasmonic bandstop filter. In addition, according to the hybrid effects of the first order resonance and high order resonance of N identical asymmetrical teeth, a sharp transmission peak can be obtained. This peak, which is within two bandgaps, possesses a relative small full-width at half-maximum, about 11.5 nm. Moreover, the resonant wavelength of this sharp peak can be regulated by adjusting the relative depths of N asymmetrical teeth. These results that we acquire may have important application potential on high-density nanoplasmonic integration circuits.
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