naa a22 4500 510817653 CHVBK 20180411083516.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11468-012-9387-8 doi (NATIONALLICENCE)springer-10.1007/s11468-012-9387-8 Design of Optical Filters with Flat-on-Top Transmission Lineshapes Based on Two Side-Coupled Metallic Grooves [Elektronische Daten] [Xu-Sheng Lin, Sheng Lan] We investigate theoretically and numerically the resonant transmission through side-coupled metallic grooves. In the framework of coupled mode theory (CMT), a single metallic groove can be considered as a lossy optical resonator and two metallic grooves coupled via tunneling effect can be treated as a second-order cascade resonator. The relationship between the transmission lineshape of the coupled grooves and the cross-coupling between the grooves is analyzed by CMT. It is found that a flat-on-top lineshape can be obtained when the cross-coupling is equal to the total decay rate of the groove mode. Predictions based on the CMT analysis are in good agreement with the simulation results based on the finite-difference time-domain technique. Springer Science+Business Media, LLC, 2012 Surface plasmon polariton nationallicence Metallic groove nationallicence Tunneling nationallicence SPPs : surface plasmon polaritons nationallicence CMT : coupled mode theory nationallicence FDTD : finite-difference time-domain method nationallicence Lin Xu-Sheng Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, 510006, Guangzhou, China aut Lan Sheng Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, 510006, Guangzhou, China aut Plasmonics Springer US; http://www.springer-ny.com 8/2(2013-06-01), 283-287 1557-1955 8:2<283 2013 8 11468 https://doi.org/10.1007/s11468-012-9387-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11468-012-9387-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lin Xu-Sheng Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, 510006, Guangzhou, China aut NATIONALLICENCE 700 1- Lan Sheng Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering, South China Normal University, 510006, Guangzhou, China aut NATIONALLICENCE 773 0- Plasmonics Springer US; http://www.springer-ny.com 8/2(2013-06-01), 283-287 1557-1955 8:2<283 2013 8 11468 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer