Research Papers

Investigation of the optical performance in straight hybrid plasmonic waveguides with concentric nanoring and nanodisk

[+] Author Affiliations
Xing Chen, Lingling Wang, Xiang Zhai

Hunan University, School of Physics and Microelectronics and Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, South Lushan Road, Changsha 410082, China

Yuanjiang Xiang, Han Zhang

Hunan University, Key Laboratory for Micro-Nano-Optoelectronic Devices of Ministry of Education, College of Physics and Microelectronic Science, South Lushan Road, Changsha 410082, China

J. Nanophoton. 9(1), 093095 (Jan 22, 2015). doi:10.1117/1.JNP.9.093095
History: Received October 11, 2014; Accepted December 30, 2014
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Abstract.  A straight hybrid plasmonic waveguide (HPW) with concentric nanoring and nanodisk is numerically investigated based on a three-dimensional finite-difference time-domain method. It shows that the straight HPW and the nanoring with variational geometry parameters possess different coupling efficiencies at the telecommunication wavelengths. With different coupling processes, effective coupling can be achieved which provides a way to achieve optimal transmittance. Under an appropriate geometry parameter regime, the HPW could simultaneously offer a large split ratio and provide subwavelength field confinement and long propagation distance. The wavelength responses show that the HPW has good wavelength toleration around 1550 nm, indicating that it may be employed as an optical device with the desired performance for optical communications.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Xing Chen ; Lingling Wang ; Xiang Zhai ; Yuanjiang Xiang and Han Zhang
"Investigation of the optical performance in straight hybrid plasmonic waveguides with concentric nanoring and nanodisk", J. Nanophoton. 9(1), 093095 (Jan 22, 2015). ; http://dx.doi.org/10.1117/1.JNP.9.093095


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