Research Papers

Analog of midinfrared electromagnetically induced-transparency and slow rainbow trapping light based on graphene nanoribbon-coated silica substrate

[+] Author Affiliations
Buzheng Wei, Shuisheng Jian

Beijing Jiaotong University, Key Laboratory of All Optical Network and Advanced Telecommunication Network of EMC, Beijing, China

Beijing Jiaotong University, Institute of Lightwave Technology, Beijing, China

J. Nanophoton. 11(2), 026011 (Jun 05, 2017). doi:10.1117/1.JNP.11.026011
History: Received March 11, 2017; Accepted May 19, 2017
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Abstract.  A midinfrared band-tunable graphene-based plasmonic waveguide is analytically and numerically investigated to realize electromagnetically induced-transparency-like transmission and to slow rainbow trapping light. By applying different Fermi energy levels to the top and bottom graphene nanoribbons, a dynamic control of resonant wavelengths is thus obtained at the desired working regions. Plus, the structural size parameters play a significant role in modulating the resonant spectra and resonant depth. Combining the manipulation of the two sets of influential factors, the transparency window is therefore under control. Detailed investigations of the analytic mechanism of the device are made as well. Furthermore, the light signal that travels in the waveguide can be successfully slowed down to over 340 times the speed in a vacuum. If the nanoribbon width is gradiently distributed, the so-called rainbow trapping can be achieved. Hence, the device has potential applications in nanoimaging, sensing, integrated circuits, and light energy storage domains.

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© 2017 Society of Photo-Optical Instrumentation Engineers

Citation

Buzheng Wei and Shuisheng Jian
"Analog of midinfrared electromagnetically induced-transparency and slow rainbow trapping light based on graphene nanoribbon-coated silica substrate", J. Nanophoton. 11(2), 026011 (Jun 05, 2017). ; http://dx.doi.org/10.1117/1.JNP.11.026011


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