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On-chip integrated waveguide amplifiers on Erbium-doped thin film lithium niobate on insulator

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Version 2 2023-06-08, 12:41
Version 1 2023-01-11, 21:43
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posted on 2023-06-08, 12:41 authored by Junxia Zhou, Youting Liang, Zhaoxiang Liu, Wei Chu, Haisu Zhang, Difeng Yin, Zhiwei Fang, Rongbo Wu, Jianhao Zhang, Wei Chen, Zhe Wang, Yuan Zhou, Min Wang, Ya Cheng
We demonstrate on-chip light amplification with integrated optical waveguide fabricated on erbium-doped thin film lithium niobate on insulator (TFLNOI) using the photolithography assisted chemo-mechanical etching (PLACE) technique. A maximum internal net gain of 18 dB in the small-signal-gain regime is measured at the peak emission wavelength of 1530 nm for a waveguide length of 3.6 cm, indicating a differential gain per unit length of 5 dB/cm. This work paves the way to the monolithic integration of diverse active and passive photonic components on the TFLNOI platform.

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