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Conferences > OFC > 2021 > Th1A > Th1A.23

Sub-wavelength Gratings Assisted Ridge Waveguide Surface Couplers on Lithium Niobate Thin Film

Sipan Yang, Yaqian Li, Jinbin Xu, Liying Wu, Xueling Quan, and Xiulan Cheng

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Abstract

A thin-film lithium niobate ridge-waveguide grating coupler integrated with waveguide subwavelength gratings is experimentally demonstrated. An ultra-high coupling efficiency of -5.1 dB/coupler for TE polarization and over 90 nm 3-dB optical bandwidth are achieved.

© 2021 The Author(s)

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