Lukas Z. Kastner, Dominik Peller, et al.
CLEO 2021
We demonstrate the suitability of microcavities based on circular grating resonators (CGRs) as fast switches. This type of optical resonator is characterized by a high quality factor and very small mode volume. The waveguide-coupled CGRs are fabricated with silicon-on-insulator technology compatible with standard complementary metal-oxide semiconductor (CMOS) processing. The linear optical properties of the CGRs are investigated by transmission spectroscopy. From 3D finite-difference time-domain simulations of isolated CGRs, we identify the measured resonances. We probe the spatial distribution and the parasitic losses of a resonant optical mode with scanning near-field optical microscopy. We observe fast all-optical switching within a few picoseconds by optically generating free charge carriers within the cavity. © 2009 Optical Society of America.
Lukas Z. Kastner, Dominik Peller, et al.
CLEO 2021
Rik Harbers, Nikolaj Moll, et al.
Journal of Optics A: Pure and Applied Optics
Nikolaj Moll, Sophie Schönenberger, et al.
SPIE IOPTO 2008
Bruno Schuler, Wei Liu, et al.
Physical Review Letters