Thin-film lithium niobate polarization modulator without polarization diversity

作者：Xuerui Sun, Yinan Wu, Chuanyi Lu, Hao Li, Xiaona Ye, Yuting Zhang, Shijie Liu, Yuanlin Zheng, Xianfeng Chen · 发表于：Optics Express · 年份：2022 · DOI：10.1364/oe.468533 · 被引用次数：15 · 研究领域：Photonic and Optical Devices、Photorefractive and Nonlinear Optics、Advanced Fiber Laser Technologies

With the development of photonic integrated circuits and optical information processing on thin-film lithium niobate (TFLN), the realization of the TFLN-based polarization device is becoming more and more crucial. Here, we demonstrate a polarization modulator on the TFLN platform without polarization diversity. Without polarization manipulation elements, the device only composes a phase modulator and a two-dimensional grating coupler. The structure features small footprint and high fabrication tolerance. The device holds promise for polarization encoding telecommunication.