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arXiv · 1108.0680

Critical optical coupling between a GaAs disk and a nanowaveguide suspended on the chip

C. Baker·C. Belacel·A. Andronico·P. Senellart·A. Lemaitre·E. Galopin·S. Ducci·G. Leo·I. Favero
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Abstract

We report on an integrated GaAs disk/waveguide system. A millimeter-long waveguide is suspended and tapered on the chip over a length of 25 {\mu}m to evanescently couple to high Q optical whispering gallery modes of a GaAs disk. The critical coupling regime is obtained both by varying the disk/guide gap distance and the width of the suspended nanoscale taper. The experimental results are in good agreement with predictions from the coupled mode theory.

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C. Baker, C. Belacel, A. Andronico, P. Senellart, A. Lemaitre, E. Galopin, S. Ducci, G. Leo, I. Favero. 2011-08-02. Critical optical coupling between a GaAs disk and a nanowaveguide suspended on the chip. https://doi.org/10.1063/1.3651493

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