Abstract
Photonic integrated circuits have garnered significant attention and experienced rapid development in recent years. To provide fundamental building blocks for scalable optical classical and quantum information processing, one important direction is to develop cryogenic compatible photonic integrated devices. Here, we prepare one optical filter on a lithium-niobate-on-insulator (LNOI) platform based on a multimode waveguide grating and verify its availability at temperature from 295 to 7 K. We find that the integrated optical filter still shows good quality under cryogenic conditions, and the shift of the working wavelength at different temperatures is well explained by the index variation of the material. These results advance LNOI integrated optical devices in applications under cryogenic conditions.
© 2024 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Huiqi Li, Zhaocong Wang, Qingming Lu, Lei wang, Yang Tan, and Feng Chen
Opt. Lett. 49(6) 1397-1400 (2024)
Tingting Ding, Yongzhi Tang, Hao Li, Shijie Liu, Jing Zhang, Yuanlin Zheng, and Xianfeng Chen
Opt. Lett. 49(5) 1121-1124 (2024)
Xu Han, Rui Cheng, Liang Huang, Panpan Yu, Lantian Feng, Guanghui Ren, Arnan Mitchell, Yonghui Tian, Xifeng Ren, and Haojie Xia
Opt. Lett. 49(7) 1774-1777 (2024)