Polarization rotator and switch on thin-film lithium niobate

Photonics Research 2026

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Authors: Zhao Fansu, Ao Cui, Ma Weilong, Haohua Wang, Gao Youkang, Guo Changjian, kaixuan chen, Liu Liu
DOI: 10.1364/prj.573991
Cited by: 0
References: 42

Abstract

Polarization rotators (PRs) and polarization switches are essential for on-chip polarization control. However, high-performance implementations remain scarce on the thin-film lithium niobate (TFLN) platform, despite its recent emergence as a promising photonic platform. Here, we propose and experimentally demonstrate a PR based on two supermode converters and a compact asymmetric phase shifter. By electro-optically tuning the phase shifter, a polarization switch is further realized. At 1550 nm, the PR exhibits low insertion losses (ILs) of 0.37 dB and 0.41 dB with polarization extinction ratios (PERs) of 31.78 dB and 20.4 dB for TE 0 and TM 0 inputs, respectively. It maintains PER >20 dB and IL 20 dB and an IL

Fields of Study & Subjects

Photorefractive and Nonlinear Optics Nonlinear Photonic Systems Ferroelectric and Piezoelectric Materials

Publication details

Journal / source
Photonics Research
Volume
14
Issue
4
Pages
1197–1197
Publication date
5 January 2026
Language
EN