On-chip coherent beam combination of waveguide amplifiers on Er3+-doped thin film lithium niobate

Rui Bao; Lvbin Song; Jinming Chen; Zhe Wang; Jian Liu; Lang Gao; Zhaoxiang Liu; Zhihao Zhang; Min Wang; Haisu Zhang; Zhiwei Fang; Ya Cheng

doi:10.1364/OL.504540

On-chip coherent beam combination of waveguide amplifiers on Er³⁺-doped thin film lithium niobate

Opt Lett. 2023 Dec 15;48(24):6348-6351. doi: 10.1364/OL.504540.

Authors

Rui Bao, Lvbin Song, Jinming Chen, Zhe Wang, Jian Liu, Lang Gao, Zhaoxiang Liu, Zhihao Zhang, Min Wang, Haisu Zhang, Zhiwei Fang, Ya Cheng

PMID: 38099745
DOI: 10.1364/OL.504540

Abstract

We demonstrate on-chip coherent beam combination of two waveguide amplifiers on Er³⁺-doped thin film lithium niobate (Er:TFLN) platform. Our device is built based on an electro-optic modulator fabricated on Er:TFLN. The output power of the coherently combined amplifiers is measured as high as 12.9 mW, surpassing that of previous single waveguide amplifiers based on an Er³⁺-doped thin film lithium niobate platform.