Surface acoustic wave Brillouin scattering in a photonic integrated circuit

G. Neijts, Choon Kong Lai, Maren Kramer Riseng, Duk-Yong Choi, Kunlun Yan, David Marpaung, Stephen J. Madden, Benjamin J. Eggleton, Moritz Merklein*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review


Surface acoustic wave (SAW) devices are ubiquitously used for signal processing and filtering, as well as mechanical, chemical and biological sensing, and show promise as quantum transducers. Yet, ways to coherently excite and detect SAWs all-optically and interfaced with photonic integrated circuits are yet elusive. Here, we experimentally show, for the first time, optically excited and detected SAWs in a photonic integrated circuit. Coupling between the surface acoustic and optical wave is achieved via stimulated Brillouin scattering in GeAsSe glass waveguides tailored to show strong overlap between SAWs at 3.81GHz and guided optical modes, without requiring a top cladding. We measure a 225W −1 m −1 gain coefficient for the SAW and 40MHz linewidth. Experimentally accessing this new regime of stimulated Brillouin scattering opens the door for novel on-chip sensing and signal processing applications, strong Brillouin interactions in materials without acoustic guidance in the waveguide core, and excitation of SAWs in non-piezoelectric materials.
Original languageEnglish
Title of host publication2023 IEEE Photonics Conference (IPC)
Number of pages2
ISBN (Electronic)979-8-3503-4722-7
Publication statusPublished - 25 Dec 2023
EventIEEE Photonics Conference, IPC 2023 - Hilton Orlando Buena Vista Palace, Orlando, United States
Duration: 12 Nov 202316 Nov 2023


ConferenceIEEE Photonics Conference, IPC 2023
Country/TerritoryUnited States


  • Surface Acoustic Waves
  • Stimulated Brillouin scattering
  • Photonic Integrated Circuits
  • 2024 OA procedure


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