Dielectric Waveguide Optimization for the Enhancement of TE-Polarization Transmission of Plasmonics-Based MSM-PD
Abstract
In this paper, we use the finite difference time-domain (FDTD) method to optimize the TE-polarized light transmission of a metal-semiconductor-metal photodetector (MSM-PD) employing a dielectric waveguide on top of metal nano-gratings. Simulation results demonstrate that the funneling transmission of the TE-polarized light through the nanoslit of the MSM-PD structure is highly dependent on the structure geometries, such as the waveguide and nano-grating heights. We also demonstrate that adding a dielectric waveguide layer on top of the nano-metal gratings supports both the TM- and TE polarizations, and enhances the light transmission for TE-polarization around 3-times in comparison with conventional plasmonics MSM- PD structures.
Supporting agencies: We acknowledge the support of Edith Cowan University and the World-Class Uni- versity Program funded by the Ministry of Education, Science, and Technology through the National Research Foundation of Korea (R31-10026).
About the Authors
Ayman Karar
Edith Cowan University
Australia
Australia
Electron Science Research Institute
Chee Leong Tan
Gwangju Institute of Science and Technology (GIST)
Korea, Republic of
Korea, Republic of
School of Photonics Science
Gwangju
Kamal Alameh
Edith Cowan University; Gwangju Institute of Science and Technology (GIST)
Australia
Australia
Electron Science Research Institute, AU;
Department of Nanobio Materials and Electronics, World Class University (WCU), GIST, Republic of Korea
Yong Tak Lee
Gwangju Institute of Science and Technology (GIST)
Korea, Republic of
Korea, Republic of
School of Photonics Science, GIST; Department of Information and Communications, GIST; Department of Nanobio Materials and Electronics, World Class University (WCU), GIST
Gwangju
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Review
For citations:
Karar A., Tan Ch.L., Alameh K., Lee Y.T. Dielectric Waveguide Optimization for the Enhancement of TE-Polarization Transmission of Plasmonics-Based MSM-PD. Nanosystems: Physics, Chemistry, Mathematics. 2013;4(3):378-386.
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