High Modulation Efficiency and Large Bandwidth Thin-Film Lithium Niobate
  Modulator for Visible Light

Li, Chijun; Chen, Bin; Ruan, Ziliang; Chen, Pengxin; Chen, Kaixuan; Guo, Changjian; Liu, Liu

doi:10.48550/arXiv.2202.13323

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High Modulation Efficiency and Large Bandwidth Thin-Film Lithium Niobate Modulator for Visible Light

preprint

posted on 2023-01-10, 02:28 authored by Chijun Li, Bin Chen, Ziliang Ruan, Pengxin Chen, Kaixuan Chen, Changjian Guo, Liu Liu

We experimentally demonstrate a visible light thin-film lithium niobate modulator at 532 nm. The waveguides feature a propagation loss of 2.2 dB/mm while a grating for fiber interface has a coupling loss of 5 dB. Our demonstrated modulator represents a low voltage-length product of 1.1 V*cm and a large bandwidth beyond 30 GHz.