Mahros Amr M, Tharwat Marwa M, Ashry Islam
Appl Opt. 2015 May 10;54(14):4464-70. doi: 10.1364/AO.54.004464.
Plasmonics-based polarizers are important for many photonic devices and applications. In this paper, we design and investigate the characteristics of a new TM-pass/TE-stop polarizer using silver nanograting of exponentially tapered slit sidewalls. Performance of the designed polarizer is determined through monitoring the modification of its insertion loss, return loss, extinction ratio, and far-field transform due to changing its structural parameters. We find that the structural parameters of the reported polarizer such as a slit sidewall tapering coefficient and slit opening widths have a significant impact on tuning the polarizer characteristics.
基于表面等离子体激元的偏振器对许多光子器件和应用都很重要。在本文中，我们设计并研究了一种使用指数渐变狭缝侧壁的银纳米光栅的新型TM通/TE止偏振器的特性。通过监测由于其结构参数变化而导致的插入损耗、回波损耗、消光比和远场变换的变化来确定所设计偏振器的性能。我们发现，所报道的偏振器的结构参数，如狭缝侧壁渐变系数和狭缝开口宽度，对调整偏振器特性有显著影响。
