High-Speed Lithium Tantalate-Based Silicon Photonic Modulators
Thin-film lithium niobate (TFLN) has emerged as a leading material for integrated photonics, offering a unique combination of low optical loss and a strong, fast electro-optic (EO) coefficient, enabling high-speed modulation bandwidths exceeding 100 GHz [1], [2]. More recently, thinfilm lithium tantalate (TFLT) has gained attention for its enhanced stability and resistance to optical damage [3], [4]. However, lithium contamination poses a challenge for CMOS compatibility. Here we present a heterogeneously integrated LT-based silicon (Si) Mach-Zehnder modulator (MZM) with competitive characteristics, compared to devices using monolithic TFLT-on-insulator technology.
Authors
- Tingting Zhai
- Sam Lemey (ORCID: https://orcid.org/0000-0003-1366-2604)
- Shengpu Niu (ORCID: https://orcid.org/0000-0002-0212-6876)
- Cédric Bruynsteen (ORCID: https://orcid.org/0000-0002-6862-0551)
- Tom Vanackere (ORCID: https://orcid.org/0000-0003-4692-9467)
- Günther Roelkens (ORCID: https://orcid.org/0000-0002-4667-5092)
- Filippo Ferraro (ORCID: https://orcid.org/0000-0002-9328-5548)
- Olivier Caytan (ORCID: https://orcid.org/0000-0002-1524-971X)
- Nishant Singh (ORCID: https://orcid.org/0000-0003-0609-1145)
- Sadhishkumar Balakrishnan (ORCID: https://orcid.org/0000-0002-6376-3019)
- Jakob Declercq (ORCID: https://orcid.org/0000-0003-1972-6218)
- Martin Davi
- Peter Verheyen (ORCID: https://orcid.org/0000-0002-8245-9442)
- Bart Kuyken (ORCID: https://orcid.org/0000-0002-8745-7833)
- Sofie Janssen
- Dieter Bode
- P. Absil (ORCID: https://orcid.org/0009-0001-5644-1628)
- Arno Moerman (ORCID: https://orcid.org/0000-0003-0945-2786)
- Ewoud Vissers (ORCID: https://orcid.org/0000-0002-5765-0552)
- Maximilien Billet (ORCID: https://orcid.org/0000-0002-5784-5050)
- Joris Van Campenhout (ORCID: https://orcid.org/0000-0003-0778-2669)
- Margot Niels
- Neha Singh (ORCID: https://orcid.org/0000-0002-4972-0012)
- Xin Yin
- Patrick Nenezic
Institutions
- Ghent University (BE)
- IMEC (BE)
Publication Details
- Published
- 2025-06-23
- DOI
- https://doi.org/10.1109/cleo/europe-eqec65582.2025.11111408
- Primary Topic
- Photonic and Optical Devices
- Type
- article
- Field-Weighted Citation Impact
- 0.00