Abstract
Here we present a slot waveguide-based phase shifter. Our device is based on the electrostatic displacement of mechanical structures, which can be achieved by applying a voltage. This leads to a change of the effective refractive index and thus to a phase shift. Using an integrated Mach-Zehnder interferometer, this phase shift can be measured. We show that our device can generate a phase shift of 1 π at a voltage at 7.5 V. A maximal phase shift of 1.8 π can be achieved at 10 V. Operation and the generation of optical pulses with a frequency in the MHz range and a sub-μm pulse width is possible. Furthermore, our device operates over a large wavelength range in the near infrared regime.
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Grottke, T., Hartmann, W., Schuck, C., Pernice, W.H.P. (2022). Integrated Slot Waveguide-Based Phase Shifter. In: Cesaria, M., Calà Lesina, A., Collins, J. (eds) Light-Matter Interactions Towards the Nanoscale. NATO Science for Peace and Security Series B: Physics and Biophysics. Springer, Dordrecht. https://doi.org/10.1007/978-94-024-2138-5_18
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DOI: https://doi.org/10.1007/978-94-024-2138-5_18
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