Journal ArticleDOI
Ultra-fast all-optical 2-to-4 decoder based on a photonic crystal structure
TLDR
In this paper, a photonic crystal structure based on nonlinear cavities has been proposed to improve the time response of a 2-to-4 decoder, which includes an array of chalcogenide rods with an air gap in which the spatial period of rods is 500 nm.Abstract:
In this paper, a photonic crystal structure based on nonlinear cavities has been proposed to improve the time response of a 2-to-4 decoder. The structure includes an array of chalcogenide rods with an air gap in which the spatial period of rods is 500 nm. The radius of the fundamental rods is assumed to be 125 nm, which results in a photonic bandgap of 1092–1724 nm at TM mode. Three cavities, including the nonlinear rods with a Kerr coefficient of 10−14m2/W, drop the incoming waves concerning the amount of optical intensity. The finite-difference time-domain method was used to calculate the components of the electric and magnetic fields throughout the structure. The time analysis of the device shows the rise time is equal to 200 fs, which is less than one for the previous structures. The area of 110µm2 and the margins of 4% and 88% for logics 0 and 1 are other advantages of the proposed structure. Based on the obtained results, it was proven that the performance of the 2-to-4 photonic crystal-based decoder has been improved by this work.read more
Citations
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Optical sensing in single-mode filters base on surface plasmon H-shaped cavities
TL;DR: In this article , three novel refractive index (RI) sensors based on one, two, and three H-shaped cavities (HCs) and metal-insulator-metal (MIM) waveguides are proposed.
Journal ArticleDOI
Optical sensing in single-mode filters base on surface plasmon H-shaped cavities
Shiva Khani,Mohsen Hayati +1 more
TL;DR: In this article, three novel refractive index (RI) sensors based on one, two, and three H-shaped cavities (HCs) and metal-insulator-metal (MIM) waveguides are proposed.
Journal ArticleDOI
A novel proposal for all optical 2 × 4 decoder based on photonic crystal and threshold switching method
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