Fully tunable optical filter based on a thin-film lithium niobate microring resonator
Abstract
A fully tunable optical filter on a thin-film lithium niobate platform with a footprint of 2.5 mm × 1.2 mm is demonstrated, in which the extinction ratio, resonant wavelength, and stopband width can be independently and simultaneously adjusted via three integrated electro-optic phase shifters. The device achieves an extinction-ratio tuning range from approximately 0 dB to 31 dB. At maximum extinction ratio, the stopband width can be varied between 8.8 GHz and 9.6 GHz. Moreover, the stopband center wavelength can be shifted linearly with a tuning efficiency of 1.95(8) pm/V. This work provides a compact, electro-optically reconfigurable filter architecture with independent multi-parameter control for on-chip photonic systems.
Fields of Study & Subjects
Photorefractive and Nonlinear Optics
Photonic and Optical Devices
Magneto-Optical Properties and Applications
Publication details
- Journal / source
- Optics Letters
- Publisher
- Optica Publishing Group
- Volume
- 51
- Issue
- 6
- Pages
- 1412–1412
- Publication date
- 13 February 2026
- Language
- EN