Compact RF photonic notch filter based on heterogeneous integration of As2S3 with active silicon photonic circuits

Garrett, MatthewLiu, YangMerklein, MoritzBui, Cong TinhLai, Choon KongChoi, Duk YongMadden, Stephen J.Eggleton, Benjamin J.Casas-Bedoya, Alvaro2025-06-112025-06-119781957171258ORCID:/0000-0002-5339-3085/work/171154130ORCID:/0000-0003-3146-285X/work/171154399http://www.scopus.com/inward/record.url?scp=85191489775&partnerID=8YFLogxKhttps://ieeexplore.ieee.org/document/10259050https://hdl.handle.net/1885/733758733We heterogeneously integrate As2S3 Brillouin waveguides and Si modulators,enablinga compact chip-based RF photonic filter with 50 dB rejection. This level of photonic integration facilitates novel on-chip processing, increasing RF gain by 16 dB.The authors acknowledge the facilities as well as the scientific and technical assistance of the Research and Prototype Foundry Core Research Facility at the Universityof Sydney,part ofthe NSWnode ofthe NCRIS-enabled AustralianNational Fabrication FacilityenPublisher Copyright: © 2023 The Author (s).Compact RF photonic notch filter based on heterogeneous integration of As2S3 with active silicon photonic circuits202310.1364/CLEO_SI.2023.SW3O.285191489775