Abstract

In this article, we introduce a simple magnetophotonic crystal structure for magnetic field sensing applications. Design procedure, which is performed using a global optimization tool called genetic algorithm, provides great flexibility for structures with layers having nonquarter-wavelength thickness. Results show that our proposed genetic sensor comparatively exhibits higher simplicity, sensitivity, and spatial resolution, with better photo-response and performance. We also analyze the underlying physical phenomenon responsible for such improvement by inspection of electric field distribution in the interior of the structure.

© 2012 Optical Society of America

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