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Unit cell topology optimization of line defect photonic crystal waveguide
Journal article   Open access   Peer reviewed

Unit cell topology optimization of line defect photonic crystal waveguide

Shahrzad Saremi, Seyed Mohammad Mirjalili and Seyedali Mirjalili
Procedia Technology, Vol.12, pp.174-179
International Conference Interdisciplinary in Engineering, 7th (Tîrgu Mureş, Romania, 10-Oct-2013–11-Oct-2013)
2014
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Abstract

Slow light Optimization BPSO Binary Particle Swarm Optimization PCW
In this paper we utilize a systematic method to optimize the topology of a line defect Photonic Crystal Wave guide (PCW), a very popular and effective optical device for realizing optical buffer in room temperate operation. In order to do this, we divide the unit cell PCW to 25 squares and utilize a Binary Particle Swarm Optimization (BPSO) algorithm to find the optimum topology. During the optimization process, we apply some constraints to avoid band mixing as well. Calculation results show that Normalized Delay-Bandwidth Product (NDBP) for the structure optimized is 0.27. This structure optimized possesses a high bandwidth (20.9 nm) with group index of 21.7 as well.

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