Integrated Optics
Research progress of integrated optical gyroscope
Hongjie Guo, Haifeng Liu, Ming Lei, Manqing Tan, and Zhigang Song
Chinese Optics Letters
  • Mar. 18, 2024
  • Vol. 22, Issue 3 (2024)
Atmospheric, Oceanic, Space, and Environmental Optics
Underwater wireless optical NOMA communication experiment system exploiting GaN-based micro-LED array grouping
Chinese Optics Letters
  • Mar. 18, 2024
  • Vol. 22, Issue 3 (2024)
Biophotonics
Stimulated emission–depletion-based point-scanning structured illumination microscopy
Lei Wang, Meiting Wang, Luwei Wang, Xiaomin Zheng, Jiajie Chen, Wenshuai Wu, Wei Yan, Bin Yu, Junle Qu, Bruce Zhi Gao, and Yonghong Shao
Chinese Optics Letters
  • Mar. 14, 2024
  • Vol. 22, Issue 3 (2024)
Lasers, Optical Amplifiers, and Laser Optics
Bright/dark switchable mode-locked fiber laser based on alcohol
Wenyan Zhang, Huijie Jiang, Kun Yang, Nannan Liu, Lijie Geng, Yunqi Hao, Tianhao Xian, and Li Zhan
Chinese Optics Letters
  • Mar. 07, 2024
  • Vol. 22, Issue 3 (2024)
Integrated Optics
Ultralow cross talk arrayed waveguide grating integrated with tunable microring filter array
Heming Hu, Shiping Liu, Tianwen Li, Yongjie Fan, Hua Chen, and Qing Fang
Chinese Optics Letters
  • Mar. 07, 2024
  • Vol. 22, Issue 3 (2024)
On the Cover
In the current digital era, driven by the Internet of Things, big data analytics, artificial intelligence, and industry digitization, there is an exponential growth in global data. Traditional storage methods such as hard disk drives and magnetic tapes are currently confronted with significant limitations, especially in terms of storage lifetime and energy consumption. Optical data storage, recognized for its offline storage capability and features of high capacity and extended lifetime, has emerged as a promising approach for archiving "cold" data. However, traditional optical storage technologies like DVDs and Blu-ray discs are limited in capacity. Even with the introduction of multilayer recording in Blu-ray discs technology, there are still constraints on the number of layers. Advanced multidimensional and super-resolution optical data storage technologies have provided opportunities in the field of data storage. However, these technologies also bring significant challenges that research groups and technology companies worldwide urgently need to address.
Chinese Optics Letters
  • Mar. 11, 2024
  • Vol. 21, Issue 12 (2024)
Editors' Picks
Non-Hermitian systems can change the band topology of topological systems to achieve unique physical effects, and have broad applications prospects in the development of photonic devices since most of the optical systems are non-Hermitian in the real world due to loss (or gain). Meanwhile, topological rainbow, which can separate and steer topological photonic states with different frequencies into different positions, has the great advantage of robustness against disorders and plays a key role in broadband information processing for photonic devices. However, non-Hermitian topological photonic devices are difficult to realize due to the complexity and elusive properties of the non-Hermitian systems. Up to date, no related reports have been found to demonstrate topological rainbow based on non-Hermitian photonic crystals due to lack of both theoretical methods and experimental schemes in studying non-Hermitian systems.
Chinese Optics Letters
  • Mar. 11, 2024
  • Vol. 21, Issue 12 (2024)
News
Chinese Optics Letters (COL) invites high-quality articles for the Special Issue on the 40th Anniversary of Institute of Modern Optics, Nankai University which is to be published in September, 2024.
Chinese Optics Letters
  • Feb. 20, 2024
  • Vol. , Issue (2024)
Editors' Picks
Conventional fiber lasers generate lasing output through feedback between two mirrors at either end of the laser cavity. In contrast, random fiber lasers (RDFLs) utilize random distributed feedback enabled by Rayleigh backscattering, which allows for a simplified structure, no longitudinal modes, and emission at any wavelength through cascaded Raman processes. One of the main research topics of RDFLs is high-power operation. On the one hand, RDFL can serve as a robust seed for high-power fiber amplifiers, on the other hand, it can directly achieve high-power output. Since 2013, the output power of single-stage RDFLs has rapidly increased by implementing several techniques, which include replacing full-opened cavities with half-opened structures, shortening the length of passive fiber, increasing the mode field area, reducing the number of fiber modes (appropriately reducing the numerical aperture of the fiber core), and adopting a more temporally stable pump source. Thanks to these techniques, high power output of up to 1.57 kW have been achieved in 2021. However, the generation of high-power backward light has become a new obstacle limiting the power scaling of single-stage RDFLs.
Chinese Optics Letters
  • Jan. 26, 2024
  • Vol. 21, Issue 9 (2024)