<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">C Sun</style></author><author><style face="normal" font="default" size="100%">K Rong</style></author><author><style face="normal" font="default" size="100%">Y. Wang</style></author><author><style face="normal" font="default" size="100%">H. Li</style></author><author><style face="normal" font="default" size="100%">Gong, Q.</style></author><author><style face="normal" font="default" size="100%">J. Chen</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Plasmonic ridge waveguides with deep-subwavelength outside-field confinements</style></title><secondary-title><style face="normal" font="default" size="100%">Nanotechnology</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2016</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://iopscience.iop.org/article/10.1088/0957-4484/27/6/065501/meta</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">27</style></volume><pages><style face="normal" font="default" size="100%">065501</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;&lt;span&gt;Subwavelength plasmonic waveguides are the most promising candidates for developing planar photonic circuitry platforms. In this study a subwavelength metallic ridge waveguide is numerically and experimentally investigated. Differing from previous plasmonic waveguides, the metallic strip of the subwavelength ridge waveguide is placed on a thick metal film. It is found that the surface-plasmon-polariton (SPP) waveguide modes result from the coupling of the corner modes in the two ridge corners. The bottom metal film has a great influence on the SPP modes, and nearly all the evanescent fields of the SPP modes are tightly confined outside the ridge waveguide. Simulations show that 50% of the total power flow in the SPP mode can be confined outside the ridge waveguide with an area of only about&amp;nbsp;&lt;/span&gt;&lt;em&gt;λ&lt;/em&gt;&lt;span&gt;&amp;nbsp;&lt;/span&gt;&lt;span&gt;2&lt;/span&gt;&lt;span&gt;/20. The propagation length is still about 10 times the plasmon wavelength. Through comparison with a metallic strip placed&amp;nbsp;directly on the dielectric substrate, the proposed ridge waveguide exhibits a much higher sensing performance. This plasmonic ridge waveguide with deep-subwavelength outside-field confinements is of significance in a range of nano-optics applications, especially in nanosensing.&lt;/span&gt;&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">6</style></issue></record></records></xml>