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arXiv · 0909.0556

Bloch-mode extraction from near-field data in periodic waveguides

Sangwoo Ha·Andrey A. Sukhorukov·Kokou B. Dossou·Lindsay C. Botten·C. Martijn de Sterke·Yuri S. Kivshar
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Abstract

We demonstrate that the spatial profiles of both propagating and evanescent Bloch-modes in a periodic structure can be extracted from a single measurement of electric field at the specified optical wavelength. We develop a systematic extraction procedure by extending the concepts of high-resolution spectral methods previously developed for temporal data series to take into account the symmetry properties of Bloch-modes simultaneously at all spatial locations. We apply our method to a photonic crystal waveguide interface and confirm its robustness in the presence of noise.

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Sangwoo Ha, Andrey A. Sukhorukov, Kokou B. Dossou, Lindsay C. Botten, C. Martijn de Sterke, Yuri S. Kivshar. 2009-09-03. Bloch-mode extraction from near-field data in periodic waveguides. https://doi.org/10.1364/ol.34.003776

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