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

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

2009-09-03

arxiv.org/abs/0909.0556v1

Opt. Lett. 34, 3776-3778 (2009)

Physics

Optics

3 pages, 3 figures

Scientific paper

10.1364/OL.34.003776

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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