PhD - Leuven | More than two weeks ago
Photonics, the science of generating and/or processing light waves on a micrometer-scale, is enabling evermore applications, including LED-lighting, fiber-to-the-home internet, solar panels, displays and image sensors. Recent progress in nano-fabrication now also allow to produce large-scale photonic circuits on wafer-scale with CMOS-compatible processes, providing cost-effective high-quality optical systems. Imec is playing a crucial role in the development of wafer-scale photonics, and already developed state-of-the-art integrated photonics platforms in visible and near infrared for high-speed optical communication and sensing. While these platforms already support reciprocal static and dynamic photonic components, the integration of non-reciprocal functionality at device-level, e.g., isolators or circulators, still represent a challenge. These devices are key for system architecture involving receive and transmit branches that share input and output ports, e.g., transceivers or co-linear LiDARs.
This PhD will tackle the development of circulators in mature integrated photonic platforms. Two main routes will be compared that rely, on the one hand, on the introduction of non-reciprocal materials, e.g., YIG, in the photonic stack so as to produce passive non-reciprocal devices at the expense of increased production complexity, and, on the other hand, on the introduction of symmetry-breaking stimuli by means for example of travelling acoustic waves applied as a background to the photonic circuit in which light otherwise propagate.
The ideal candidate should have:
Required background: Engineering Science
Type of work: 50% modeling, 30% experimental, 20% literature
Supervisor: Pol Van Dorpe
Co-supervisor: Xavier Rottenberg
Daily advisor: Roelof Jansen
The reference code for this position is 2022-098. Mention this reference code on your application form.