Replication Data for: Electrically Tunable Topological Notch Filter for THz Integrated Photonicshttps://doi.org/10.21979/N9/GVCVO0Gupta, ManojKumar, AbhishekSingh, RanjanDR-NTU (Data)2024-05-082026-01-26T07:53:57ZElectromagnetic filtering is essential for emerging integrated photonic technologies and widely adaptable processing of high-bandwidth signals. Conventional electro-optic modulator-based photonic approach for signal filtering at microwave frequencies could not be implemented at terahertz (THz) frequencies due to the unavailability of the THz signal-driven optical modulator. Here, we demonstrate an electrically tunable on-chip THz photonic notch filter based on the topologically protected valley hall waveguide-cavity platform. Our device shows a significantly large notch suppression depth of more than 20 dB with a return loss of 13 dB at in the entire tuning range of notch frequency. The feedback control circuit enabled precise control of the notch frequency shift with a minimum step size of 7 MHz. Our work extends the application of topological photonic crystals in developing THz integrated photonic devices for transformative technologies, including sixth generation (6G) communication and high-resolution spectral sensing.PhysicsNotch filterTerahertzElectrically tunableGupta, M., Kumar, A., & Singh, R. (2023). Electrically tunable topological notch filter for THz integrated photonics. Advanced Optical Materials, 11(23), 2301051., doi, 10.1002/adom.202301051, https://onlinelibrary.wiley.com/doi/abs/10.1002/adom.202301051Gupta, M., Kumar, A., & Singh, R. (2023). Electrically tunable topological notch filter for THz integrated photonics. Advanced Optical Materials, 11(23), 2301051., doi, 10356/170387, https://hdl.handle.net/10356/1703872024-05-08Gupta, Manoj2023-09-11Experimental and simulation dataCC BY-NC 4.0