Abstract
Integrated optical systems based on lithium niobate on insulator (LNOI) have shown great potential in recent years. However, the LNOI platform is facing a shortage of active devices. Considering the significant progress made in rare-earth-doped LNOI lasers and amplifiers, the fabrication of on-chip ytterbium-doped LNOI waveguide amplifiers based on electron-beam lithography and inductively coupled plasma reactive ion etching was investigated. The signal amplification at lower pump power (<1 mW) was achieved by the fabricated waveguide amplifiers. A net internal gain of ∼18 dB/cm in the 1064 nm band was also achieved in the waveguide amplifiers under a pump power of 10 mW at 974 nm. This work proposes a new, to the best of our knowledge, active device for the LNOI integrated optical system. It may become an important basic component for lithium niobate thin-film integrated photonics in the future.
© 2023 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Zhihao Zhang, Shanming Li, Renhong Gao, Haisu Zhang, Jintian Lin, Zhiwei Fang, Rongbo Wu, Min Wang, Zhenhua Wang, Yin Hang, and Ya Cheng
Opt. Lett. 48(16) 4344-4347 (2023)
Yuqi Zhang, Qiang Luo, Dahuai Zheng, Shuolin Wang, Shiguo Liu, Hongde Liu, Fang Bo, Yongfa Kong, and Jingjun Xu
Photon. Res. 11(10) 1733-1737 (2023)
Zheng Zhang, Ruixue Liu, Wei Wang, Kunlun Yan, Zhen Yang, Maozhuang Song, Duanduan Wu, Peipeng Xu, Xunsi Wang, and Rongping Wang
Opt. Lett. 48(21) 5799-5802 (2023)