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    Ultralow-Loss Integrated Photonics for Lidar

    Article obtained from Photonics RSS Feed.

    Researchers at École Polytechnique Fédérale de Lausanne (EPFL) and Purdue University demonstrated a hybrid approach to on-chip acousto-optic modulation by combining piezoelectric aluminium nitride technology with ultralow-loss silicon nitride integrated photonics.

    The hybrid circuit allows wideband actuation on photonic waveguides with ultralow electrical power. A key feature is that it maintains the ultralow loss of silicon nitride circuits. Silicon nitride has emerged as a leading material for chip-scale, microresonator-based optical frequency combs (microcombs).

    The researchers integrated microelectromechanical systems (MEMS) transducers made of aluminum nitride with a silicon photonic wafer to modulate…

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    Jul, 23 2020 |

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