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Design and analysis of a plasmonic demultiplexer based on band-stop filters using double-nanodisk-shaped resonators

机译:基于带双纳米盘形谐振器的带阻滤波器的等离激元解复用器的设计与分析

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摘要

In this paper, a two-channel plasmonic wavelength demultiplexer (PWDM) based on band-stop filters (BSF) using double-nanodisk-shaped resonators is proposed. The structure is numerically simulated using finite difference time domain method. First, a BSF is considered for modeling which supports three modes. Then, the effect of various structural parameters of the proposed PWDM is studied on the transmission properties in detail. The results show that the transmission properties of our PWDM are highly dependent on geometric parameters. The proposed structure provides a single-mode spectrum on each of the output ports with a maximum quality factor as high as 105 (FWHM = 7.7 nm). To this end, we illustrate that the concerning published research in this field, the significant privilege of our proposed PWDM structure is in terms of its good transmission efficiency, lowest FWHM and highest quality factor. Hence, such an arrangement is easy to fabricate and it has the potential for use in all-optical ultra-compact circuits and devices.
机译:本文提出了一种基于带阻滤波器(BSF)的双通道等离激元波长解复用器(PWDM),该带阻滤波器使用双纳米盘形谐振器。使用有限差分时域方法对结构进行了数值模拟。首先,考虑使用BSF进行建模,它支持三种模式。然后,详细研究了所提出的PWDM的各种结构参数对传输特性的影响。结果表明,我们的PWDM的传输特性高度依赖于几何参数。所提出的结构在每个输出端口上提供单模频谱,其最大品质因数高达105(FWHM = 7.7 nm)。为此,我们说明了该领域中相关的已发表的研究,我们提出的PWDM结构的显着优势在于其良好的传输效率,最低的FWHM和最高的品质因数。因此,这种布置易于制造,并且具有用于全光学超紧凑电路和装置的潜力。

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