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首页> 外文会议>Photonics Europe Conference on Nanophotonics >Nanoscale plasmonic waveguides for filtering and demultiplexing devices.
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Nanoscale plasmonic waveguides for filtering and demultiplexing devices.

机译：用于过滤和解复用装置的纳米级等级载波。

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摘要

Numerical simulations, based on a FDTD (finite-difference-time-domain) method, of infrared light propagation for add/drop filtering in two-dimensional (2D) Ag-Si0_2-Ag resonators are reported to design 2D Y-bent plasmonic waveguides with possible applications in telecommunication WDM (wavelength demultiplexing). First, we study optical transmission and reflection of a nanoscale Si0_2 waveguide coupled to a nanocavity of the same insulator located either inside or on the side of a linear waveguide sandwiched between Ag. According to the inside or outside positioning of the nanocavity with respect to the waveguide, the transmission spectrum displays peaks or dips, respectively, which occur at the same central frequency. A fundamental study of the possible cavity modes in the near-infrared frequency band is also given. These filtering properties are then exploited to propose a nanoscale demultiplexer based on a Y-shaped plasmonic waveguide for separation of two different wavelengths, in selection or rejection, from an input broadband signal around 1550 nm. We detail coupling of the 2D add/drop Y connector to two cavities inserted on each of its branches.
机译：报告了基于FDTD（有限差分 - 时域）方法的数值模拟，用于在二维（2D）AG-SiOM0_2-AG谐振器中加入/掉线滤波的红外光传播，设计2D Y型弯曲等离子体波导具有电信WDM的可能应用（波长解复用）。首先，我们研究纳米级SiO_2波导的光学传输和反射，耦合到位于Ag之间的线性波导内部或侧面的相同绝缘体的纳米腔的纳米腔。根据纳米凹陷相对于波导的内部或外部定位，透射光谱分别显示在相同的中心频率下发生的峰值或垂度。还给出了对近红外频带中可能的腔模式的基本研究。然后利用这些滤波性质以基于Y形代理波导提出纳米级复用器，用于从1550nm的输入宽带信号分离两种不同的波长。我们将2D添加/滴Y连接器的耦合详细耦合到插入每个分支机的两个空腔。

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