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arXiv · 2202.11548

On-chip integrated Yb3+-doped waveguide amplifiers on thin film lithium niobate

Zhihao Zhang·Zhiwei Fang·Junxia Zhou·Youting Liang·Yuan Zhou·Zhe Wang·Jian Liu·Ting Huang·Rui Bao·Jianping Yu·Haisu Zhang·Min Wang·Ya Cheng
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Abstract

We report the fabrication and optical characterization of Yb3+-doped waveguide amplifiers (YDWA) on the thin film lithium niobate fabricated by photolithography assisted chemo-mechanical etching. The fabricated Yb3+-doped lithium niobate waveguides demonstrates low propagation loss of 0.13 dB/cm at 1030 nm and 0.1 dB/cm at 1060 nm. The internal net gain of 5 dB at 1030 nm and 8 dB at 1060 nm are measured on a 4.0 cm long waveguide pumped by 976nm laser diodes, indicating the gain per unit length of 1.25 dB/cm at 1030 nm and 2 dB/cm at 1060 nm, respectively. The integrated Yb3+-doped lithium niobate waveguide amplifiers will benefit the development of a powerful gain platform and are expected to contribute to the high-density integration of thin film lithium niobate based photonic chip.

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Zhihao Zhang, Zhiwei Fang, Junxia Zhou, Youting Liang, Yuan Zhou, Zhe Wang, Jian Liu, Ting Huang, Rui Bao, Jianping Yu, Haisu Zhang, Min Wang, Ya Cheng. 2022-02-23. On-chip integrated Yb3+-doped waveguide amplifiers on thin film lithium niobate. https://arxiv.org/abs/2202.11548

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