Novel Integrated Demultiplexer with the Bragg Grating Structure Based on Surface Plasmon Polaritons

Abstract:

A novel demultiplexer based on surface plasmon polaritons with the Bragg structure has been proposed and numerically investigated. The finite difference time domain method with perfectly matched layer absorbing boundary condition is adopted to simulate and study their properties. By introducing Bragg grating structure in the couple area, high extinguish ratio can be achieved. The extinction ratio in 1550nm was 27.5db. Meanwhile, the photonic device can be made in the way of high level of integration, because SPPs has the ability of strongly localizing the signal mode in the area beyond the limit of diffraction. The longitudinal dimension of this demultiplexer was 650nm. The demultiplexer may become a good choice for the design of devices in highly integrated optical circuits.

• Periodical: Key Engineering Materials (Volumes 609-610)
• Pages: 1307-1312
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.609-610.1307
• Online since: April 2014
• Authors: Liang Bing Luo, Rui Sheng Liang*, Teng Long Li, Wen Hao Mo, Ming Jia He
• Keywords: Bragg Grating, Demux, MIM, SPPs

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