P Velha et al 2006 New J. Phys. 8 204 doi:10.1088/1367-2630/8/9/204
P Velha1,2,3, J C Rodier1, P Lalanne1, J P Hugonin1, D Peyrade2, E Picard3, T Charvolin3 and E Hadji3
Show affiliationsPart of Focus on Nanophotonics
Microcavities consisting of two identical tapered mirrors etched into silicon-on-insulator ridge waveguides are investigated for operation at telecommunication wavelengths. They offer very small modal volumes of approximately 0.6 (λ/n)3 and calculated intrinsic Q factors of 400 000. We have measured a Q factor of 8900 for a loaded cavity, in agreement with the theoretical value. In contrast to recent works performed on suspended membranes, the buried SiO2 layer is not removed. The cavities possess strong mechanical robustness, thus making them attractive from the viewpoint of integration in large systems. The cavity Q factor is much larger than those previously obtained for similar geometries on a substrate.
84.40.Az Waveguides, transmission lines, striplines
73.40.Qv Metal-insulator-semiconductor structures (including semiconductor-to-insulator)
Issue 9 (September 2006)
Received 6 April 2006
Published 22 September 2006
P Velha et al 2006 New J. Phys. 8 204
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