Optical Tamm states in hetero-structures with highly dispersive planar plasmonic metamaterials

Optical Tamm states (OTSs) in hetero-structures consisting of highly dispersive planar plasmonic metamaterials and truncated photonic crystal (PC) are investigated numerically. Compared to conventional OTSs in metal-PC structures, the reflectance of tunneling mode can be reduced from −10.2 dB to −32...

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Published in:Applied physics letters 2013-03, Vol.102 (11)
Main Authors: Lu, Hai, Li, Yunhui, Feng, Tuanhui, Wang, Shaohua, Xue, Chunhua, Kang, Xiubao, Du, Guiqiang, Jiang, Haitao, Chen, Hong
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container_title Applied physics letters
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Li, Yunhui
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Wang, Shaohua
Xue, Chunhua
Kang, Xiubao
Du, Guiqiang
Jiang, Haitao
Chen, Hong
description Optical Tamm states (OTSs) in hetero-structures consisting of highly dispersive planar plasmonic metamaterials and truncated photonic crystal (PC) are investigated numerically. Compared to conventional OTSs in metal-PC structures, the reflectance of tunneling mode can be reduced from −10.2 dB to −32.0 dB, with an optimized Q-factor up to 17 times higher simultaneously. Further study on electromagnetic (EM) field distribution confirms that EM waves are highly localized at some special points. The confinement along the propagating direction provided by OTSs and the in-plane localization originated from the planar plasmonic metamaterials give rise to the three-dimensional enhancement of sub-wavelength EM localization corporately. As the advantages above are not at a cost of extra device volume, this structure is promising to be applied in highly sensitive dielectric sensing, nonlinear optical devices, and so on.
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title Optical Tamm states in hetero-structures with highly dispersive planar plasmonic metamaterials
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