We experimentally studied plasmon-polariton-assisted light propagation in serially coupled silver nanowire (Ag-NW) dimers and probed their dependence on bending-angle between the nanowires and polarization of incident light. From the angle-dependence study, we observed that obtuse angles between the nanowires resulted in better transmission than acute angles. From the polarization studies, we inferred that light emission from junction and distal ends of Ag-NW dimers can be systematically controlled. Further, we applied this property to show light routing and polarization beam splitting in obtuse-angled Ag-NW dimer. The studied geometry can be an excellent test-bed for plasmonic circuitry.
|Journal||Applied Physics Letters|
|State||Published - 10 Sep 2012|
Bibliographical noteFunding Information:
G.V.P.K. thanks Department of Science and Technology (DST), India for Ramanujan fellowship. This research was partially funded by DST-SERB Grant (SR/S2/LOP-0007/2011) and DST Nanoscience Unit Grant (SR/NM/NS-42/2009) at IISER-P. We thank National Chemical Laboratory, Pune for TEM imaging.