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Top: schematic of the slotted PhC heterostructure modulator. The relevant electric field is in the plane of the slab across the slotted region. It is induced by the modulation voltage, which is applied to the metal electrodes alongside the PhC waveguide. Bottom: a scanning electron micrograph of the investigated slotted PhC resonators.
Calculated (red line) and experimental (open symbols) transmission spectra of the hybrid SOI and polymer double heterostructure resonator. The inset shows a scanning electron micrograph of the PhC structure completely infiltrated with NLO-polymer.
Spectral transmission (black circles) and modulation response (red triangles) of a slotted PhC heterostructure after infiltration with APC/AJ-CKL1 guest host polymer and after high electric field poling. The magnitude of the detected modulated signal corresponds qualitatively to the first derivative of the transmission spectrum.
Modulation amplitude as a function of modulation voltage detected at the first (black circles) and second harmonic (blue triangles) of the modulation frequency. The lines represent linear (black) and square (blue) fits to the data points, indicating Pockels and electrical Kerr effect, respectively.
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