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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2025
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2503.19044 |
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| _version_ | 1866913875259031552 |
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| author | Yu, Yalong Ren, Yekai Chen, Nuo Chu, Tao |
| author_facet | Yu, Yalong Ren, Yekai Chen, Nuo Chu, Tao |
| contents | Thin-film lithium niobate (TFLN) modulators, despite their superior electro-optic performance, face critical DC drift challenges under low-frequency or prolonged operation. In this work, we demonstrate a novel suppression strategy by exciting multiferroic skyrmions in TFLN, achieving drift-free square-wave modulation for voer 1 hour-the first solution eliminating feedback systems. This breakthrough originates from dual carrier suppression mechanisms:(1) charge density reduction via skyrmion-induced polarization nano-regions (PNRs) excitation, and (2) mean free path restriction through polarization gradients at PNRs domain walls. By directly targeting the root cause of DC drift-mobile charge redistribution-our method uniquely preserves the essential SiO2 upper cladding, resolving the longstanding trade-off between drift mitigation and waveguide protection. Crucially, our work also provides the first experimental observation of interconversion between short-term drift (seconds-scale transient overshoot) and long-term drift (hours-scale baseline shift), offering critical insights into their unified origin. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_19044 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Suppressing DC Drift in Thin-Film Lithium Niobate Modulators via Multiferroic Skyrmion Excitation Yu, Yalong Ren, Yekai Chen, Nuo Chu, Tao Applied Physics Thin-film lithium niobate (TFLN) modulators, despite their superior electro-optic performance, face critical DC drift challenges under low-frequency or prolonged operation. In this work, we demonstrate a novel suppression strategy by exciting multiferroic skyrmions in TFLN, achieving drift-free square-wave modulation for voer 1 hour-the first solution eliminating feedback systems. This breakthrough originates from dual carrier suppression mechanisms:(1) charge density reduction via skyrmion-induced polarization nano-regions (PNRs) excitation, and (2) mean free path restriction through polarization gradients at PNRs domain walls. By directly targeting the root cause of DC drift-mobile charge redistribution-our method uniquely preserves the essential SiO2 upper cladding, resolving the longstanding trade-off between drift mitigation and waveguide protection. Crucially, our work also provides the first experimental observation of interconversion between short-term drift (seconds-scale transient overshoot) and long-term drift (hours-scale baseline shift), offering critical insights into their unified origin. |
| title | Suppressing DC Drift in Thin-Film Lithium Niobate Modulators via Multiferroic Skyrmion Excitation |
| topic | Applied Physics |
| url | https://arxiv.org/abs/2503.19044 |