Aron Opheij

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Wavelength-scale optical modulators are essential building blocks for future on-chip optical interconnects. Any modulator design is a trade-off between bandwidth, size and fabrication complexity, size being particularly important as it determines capacitance and actuation energy. Here, we demonstrate an interesting alternative that is only 3 mm long, only(More)
Wavelength-scale optical modulators are essential building blocks for future on-chip optical interconnects. Any modulator design is a trade-off between bandwidth, size and fabrication complexity, size being particularly important as it determines capacitance and actuation energy. Here, we demonstrate an interesting alternative that is only 3 μm long, only(More)
We present experimental observations of visible wavelength second-and third-harmonic generation on single plasmonic nanowires of variable widths. We identify that near-infrared surface plasmon polaritons, which are guided along the nanowire, act as the source of the harmonics generation. We discuss the underlying mechanism of this nonlinear process, using a(More)
With a phase-sensitive near-field microscope we measure the propagating of light through a 2D photonic crystal waveguide. We study how the different Bloch harmonics of the propagating light evanescently decay into the air above the waveguide. Furthermore, exploiting the phase sensitivity of our microscope, we are able to reconstruct the electric vector(More)
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