Electrically interfaced Brillouin-active waveguide for microwave photonic measurements

Yishu Zhou (), Freek Ruesink, Margaret Pavlovich, Ryan Behunin, Haotian Cheng, Shai Gertler, Andrew L. Starbuck, Andrew J. Leenheer, Andrew T. Pomerene, Douglas C. Trotter, Katherine M. Musick, Michael Gehl, Ashok Kodigala, Matt Eichenfield, Anthony L. Lentine, Nils Otterstrom and Peter Rakich ()
Additional contact information
Yishu Zhou: Yale University
Freek Ruesink: Yale University
Margaret Pavlovich: Yale University
Ryan Behunin: Northern Arizona University
Haotian Cheng: Yale University
Shai Gertler: Yale University
Andrew L. Starbuck: Sandia National Laboratories
Andrew J. Leenheer: Sandia National Laboratories
Andrew T. Pomerene: Sandia National Laboratories
Douglas C. Trotter: Sandia National Laboratories
Katherine M. Musick: Sandia National Laboratories
Michael Gehl: Sandia National Laboratories
Ashok Kodigala: Sandia National Laboratories
Matt Eichenfield: University of Arizona
Anthony L. Lentine: Sandia National Laboratories
Nils Otterstrom: Sandia National Laboratories
Peter Rakich: Yale University

Nature Communications, 2024, vol. 15, issue 1, 1-8

Abstract: Abstract New strategies for converting signals between optical and microwave domains could play a pivotal role in advancing both classical and quantum technologies. Traditional approaches to optical-to-microwave transduction typically perturb or destroy the information encoded on intensity of the light field, eliminating the possibility for further processing or distribution of these signals. In this paper, we introduce an optical-to-microwave conversion method that allows for both detection and spectral analysis of microwave photonic signals without degradation of their information content. This functionality is demonstrated using an optomechanical waveguide integrated with a piezoelectric transducer. Efficient electromechanical and optomechanical coupling within this system permits bidirectional optical-to-microwave conversion with a quantum efficiency of up to −54.16 dB. Leveraging the preservation of the optical field envelope in intramodal Brillouin scattering, we demonstrate a multi-channel microwave photonic filter by transmitting an optical signal through a series of electro-optomechanical waveguide segments, each with distinct resonance frequencies. Such electro-optomechanical systems could offer flexible strategies for remote sensing, channelization, and spectrum analysis in microwave photonics.

Date: 2024
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DOI: 10.1038/s41467-024-51010-8

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