Waveguide-Fed Metasurfaces

Penn State University Background
Metasurfaces with unparalleled controllability of light have shown great potential to revolutionize conventional optics. However, they mainly work with free-space light input, which makes it difficult to fully integrate them on-chip together with light sources. On the other hand, integrated photonics enables packing optical components densely on a chip, but it only provides limited free-space light controllability.
Technology Overview
Here, the research team developed and systematically demonstrated a new type of metasurfaces that are driven directly by guided waves. By dressing those metasurfaces on top of waveguides, the guided waves were molded into any desired free-space modes to achieve complex free-space functions, such as out-of-plane beam deflection and focusing on a photonic integrated chip.

Stage of Development

Technology readiness level (TRL): 1‑3


The technology can achieve compact and multifunctional metasurfaces integrated photonic devices
It bridges optical guided waves with free space waves and enables agile control of light properties


It is suitable for applications such as optical communications, light detection and ranging (LiDAR) and biomedical sensing


The research team seeks licensing and collaboration opportunities

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