Compact and broadband polarization rotator on thin-film lithium niobate utilizing mode hybridization
We propose and demonstrate a compact, broadband polarization rotator (PR) on a thin-film lithium niobate (TFLN) platform utilizing mode hybridization. The proposed PR has a footprint of 4 × 118 <i>μ</i>m<sup>2</sup>. Numerically, the PR exhibits an insertion loss (IL) of 0.23 dB and an extinction ratio (ER) of 42 dB at 1550 nm, while its bandwidth for ER > 20 dB and IL < 1 dB exceeds 175 nm. The measurement result shows IL < 1 dB and ER > 19 dB in the wavelength range of 1490-1590 nm.
Authors
- Jiahao Wu (ORCID: https://orcid.org/0000-0003-3231-5093)
- Daoxin Dai (ORCID: https://orcid.org/0000-0002-2769-3009)
- Yaocheng Shi (ORCID: https://orcid.org/0000-0003-4489-8310)
- Weixi Liu (ORCID: https://orcid.org/0000-0002-9070-8584)
Institutions
- Zhejiang University (CN)
Publication Details
- Journal
- Optics Letters
- Published
- 2025-08-08
- DOI
- https://doi.org/10.1364/ol.569164
- Citations
- 2
- Primary Topic
- Photorefractive and Nonlinear Optics
- Type
- article
- Field-Weighted Citation Impact
- 2.49