High-Q Lithium Niobate Microring Resonator with Electro-Optically Reconfigurable Coupling Strength
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915696811704320 |
|---|---|
| author | Ren, Yuan Zheng, Yong Liu, Ruixue Nan, Boyang Zhuang, Ziyao Wu, Rongbo Wang, Min Cheng, Ya |
| author_facet | Ren, Yuan Zheng, Yong Liu, Ruixue Nan, Boyang Zhuang, Ziyao Wu, Rongbo Wang, Min Cheng, Ya |
| contents | The development of sophisticated integrated photonic circuits demands microresonators that combine exceptional optical confinement with dynamic operational flexibility. Here, we demonstrate a racetrack resonator on the thin-film lithium niobate platform that achieves an electro-optically tunable coupling strength while maintaining a stable, high intrinsic Q factor on the order of 10^6. By incorporating a Mach-Zehnder interferometer into the coupling region, the device facilitates a continuous and reversible transition across the entire coupling spectrum from under-coupling and critical coupling to deep over-coupling. To ensure high spectral purity, we employ Euler bends to facilitate an adiabatic transition between the straight and curved waveguide sections. This design effectively suppresses the excitation of higher-order modes, resulting in a clean transmission spectrum characterized by exclusive fundamental mode operation. At the critical coupling point, the resonator exhibits a high extinction ratio exceeding 30 dB. The integration of stable ultra-high Q, single-mode purity, and full-range coupling reconfigurability positions this device as a vital component for adaptive microwave photonics, high-efficiency nonlinear optics, and programmable quantum photonic networks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_22779 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | High-Q Lithium Niobate Microring Resonator with Electro-Optically Reconfigurable Coupling Strength Ren, Yuan Zheng, Yong Liu, Ruixue Nan, Boyang Zhuang, Ziyao Wu, Rongbo Wang, Min Cheng, Ya Optics The development of sophisticated integrated photonic circuits demands microresonators that combine exceptional optical confinement with dynamic operational flexibility. Here, we demonstrate a racetrack resonator on the thin-film lithium niobate platform that achieves an electro-optically tunable coupling strength while maintaining a stable, high intrinsic Q factor on the order of 10^6. By incorporating a Mach-Zehnder interferometer into the coupling region, the device facilitates a continuous and reversible transition across the entire coupling spectrum from under-coupling and critical coupling to deep over-coupling. To ensure high spectral purity, we employ Euler bends to facilitate an adiabatic transition between the straight and curved waveguide sections. This design effectively suppresses the excitation of higher-order modes, resulting in a clean transmission spectrum characterized by exclusive fundamental mode operation. At the critical coupling point, the resonator exhibits a high extinction ratio exceeding 30 dB. The integration of stable ultra-high Q, single-mode purity, and full-range coupling reconfigurability positions this device as a vital component for adaptive microwave photonics, high-efficiency nonlinear optics, and programmable quantum photonic networks. |
| title | High-Q Lithium Niobate Microring Resonator with Electro-Optically Reconfigurable Coupling Strength |
| topic | Optics |
| url | https://arxiv.org/abs/2512.22779 |