Photonic crystal microring resonators on a hybrid silicon nitride-on-lithium niobate platform
Photonic crystal resonators (PhCRs) have been widely used in nonlinear integrated photonics for frequency engineering applications. A microwave-assisted frequency converter based on PhCRs provides precisely controlled bidirectional frequency conversion. Using a hybrid silicon nitride-on-lithium niobate-on-insulator platform, we demonstrate a high-quality PhCR for the first time, to the best of our knowledge, for voltage-driven flexible frequency conversion using the electro-optic effect (0.85 pm/V) without etching lithium niobate. The fabricated PhCR has a large supermode splitting bandwidth of 14.6 GHz and an intrinsic quality factor of 1.47 × 10<sup>5</sup>. Using different periodic corrugation amplitudes in the fabricated PhCRs enables the precise control of mode-splitting bandwidth with a 93.5-MHz/nm bandwidth-to-amplitude ratio.
Authors
- Rakesh Krishna (ORCID: https://orcid.org/0000-0003-2902-0454)
- Ali Adibi (ORCID: https://orcid.org/0000-0003-2628-0584)
- Tianren Fan (ORCID: https://orcid.org/0000-0002-7047-2260)
- Zhongdi Peng (ORCID: https://orcid.org/0009-0009-5446-0356)
- Amir H. Hosseinnia (ORCID: https://orcid.org/0000-0003-1052-1064)
- Xi Wu
Institutions
- Georgia Institute of Technology (US)
Publication Details
- Journal
- Optics Letters
- Published
- 2025-06-24
- DOI
- https://doi.org/10.1364/ol.565076
- Citations
- 1
- Primary Topic
- Photonic and Optical Devices
- Type
- article
- Field-Weighted Citation Impact
- 0.73
Funders
- Army Research Office