Nano Elliptical Structure for Performing All-Plasmonic 1 × 2 Demultiplexer
Keywords:
Elliptical Nano Resonator, IMI Plasmonic Waveguides, 1 2 DemultiplexerAbstract
This paper presents the design of an all-optical 1 × 2 demultiplexer utilizing elliptical Insulator-Metal- Insulator (IMI) plasmonic waveguides. The dimensions of the proposed structure are rather compact, measuring 400 nm × 400 nm, and it functions within the wavelength range of 1550 nm. The devised apparatus among the input signal along with the selector signal utilizes constructive and destructive interferences. Compared to the earlier works, this structure is considerably simpler. The plasmonic demux's performance can be assessed using the following five parameters: the first is Transmission (T), the second is Contrast Ratio (CR), and third parameter is the Modulation Depth (MD), fourth parameters is the Insertion Loss (IL), and the last parameter is the Contrast Loss (CL). The threshold for transitioning between logic 1 and logic 0 is determined to be 0.3. In addition, the suggested structural dimensions are deemed to be excellent and ideal, as indicated by the MD value of 97.56%. The plasmonic Demux structure being proposed plays a significant role in the advancement of all-optical Arithmetic Logic Units (ALUs) and all-optical signal processing Nano-circuits. The proposed plasmonic Demux is simulated via COMSOL Multiphysics 5.4 utilizing the Finite Element Method (FEM).
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