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

2023/08/17 by Rui Bao, Bao, Rui, Lvbin Song +20
Engineering · Physics and Astronomy · #Advanced Fiber Laser Technologies #FOS: Physical sciences #Optics (physics.optics) #Photonic and Optical Devices #Photorefractive and Nonlinear Optics

paper · pdf · doi:10.48550/arxiv.2308.08740

openalex publication_date 2023/08/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

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 Er³⁺-doped thin film lithium niobate platform.

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