Perfect extinction in subwavelength dual metallic transmitting gratings |
| |
Authors: | Estruch Thomas Jaeck Julien Pardo Fabrice Derelle Sophie Primot Jérôme Pelouard Jean-Luc Haidar Riad |
| |
Institution: | ONERA—The French Aerospace Lab, F-91761, Palaiseau, France. |
| |
Abstract: | We investigate the strong electromagnetic coupling that settles in dual metallic grating structures. This coupling is evidenced to lead to a perfect optical extinction in the transmission spectrum. The behavior of this perfect extinction that strongly depends on the longitudinal space and the lateral displacement between the two gratings can be explained by a simple model that describes the interference between a propagating mode and a couple of evanescent modes. The results show that the electromagnetic transmission of the structure can be tuned by controlling the position of this perfect transmission extinction and thus pave the way to new types of infrared tunable filters. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |