• Title/Summary/Keyword: photonic crystals

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Photonic Crystals: Theory and Applications (광자결정: 이론과 응용)

  • 기철식;임한조
    • Proceedings of the Optical Society of Korea Conference
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    • 2003.07a
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    • pp.4-5
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    • 2003

  • 21세기의 정보화 사회에는 많은 양의 정보를 신속하게 전달하며 처리하는 기술이 요구될 것이라는 것은 누구나 예상하는바 이다. 하지만, 20세기의 과학발전을 주도했던 전자소자는 이러한 요구에 부응하기 어렵다는 것이 전문가들의 공통된 견해이며 그 대안을 광을 이용한 광소자에서 찾고 있다. 헌데, 기존의 광소자들로는 효율과 소자의 크기 면에서 한계를 보이고 있어 그 한계를 극복할 대안이 요구되어진다.(중략)

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Optimization for the structure of all-optical filter transistor in nonlinear photonic crystals using Genetic Algorithm (유전자 알고리즘을 이용한 비선형 광자결정 내의 완전 광 필터 트랜지스터 구조의 최적화)

  • Lee, Hyuek-Jae
    • Journal of the Institute of Convergence Signal Processing
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    • v.9 no.2
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    • pp.129-134
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    • 2008

  • In this paper, we carry out the simulation for an optimal solution of one-dimensional nonlinear photonic crystal structure using Genetic algorithm, and show the proposed method to apply for photonic transistors. Unlike a conventional steepest descent method for an optimization, the proposed method based on Genetic Algorithm has advantages for finding out excellent solutions without any analytic forms, which can easily apply to other applications. Also, as several solutions around global minimum solution can be obtained, it is very good optimization tool to give us the patterns about the optimal structure of a photonic crystal transistor. To design an all-optical filter transistor, Neural network algorithm is firstly performed for an initial design and then Genetic Algorithm is finally used to get the optimal solution. From the simulation of one-dimensional photonic crystal transistor, 27dB of the switching On/Off ratio is obtained.

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