In the past half century, silicon-based microelectronic integrated circuit technology and optical fiber communication technology have triggered a far-reaching information technology revolution, which has made human society enter the information age of rapid development. People's demand for communication capacity and speed is growing exponentially. Data center and high-performance computing are facing the bottleneck of speed, bandwidth and energy consumption of electrical interconnection. Silicon based optical interconnection has become the key technology to break through this bottleneck. Silicon's advantages of high refractive index, capable of small active components, and CMOS compatible process makes it possible to realize large-scale optoelectronic integration on chip with low cost, which has become a hot spot in the industry. In addition, silicon-based optoelectronics show great potential in a series of new fields such as mid-infrared communication, microwave photonics, nonlinear optics, biochemical sensing, quantum communication and quantum computing, optical lidar, optical neural network, spectral analysis and detection, astronomical optics, etc. To highlight the exciting developments in this field and to promote the diverse applications of silicon photonics, Prof. Dingshan Gao (Huazhong University of Science and Technology, China) and Prof. Zhiping Zhou (Peking University, China) are organizing a special issue on Recent Advances in Silicon Photonics. Submission deadline is June 15, 2021.

Fibers are one of the most fundamental material forms that are used in multitude of applications, ranging from fabrics to telecommunications, from hanging the bridges to monitoring their structural integrity, etc. In recent years, major breakthroughs were made which demonstrated fibers with novel optical, electronic, acoustic and cell interfacing properties that enable new functionalities. Functional fiber and related application research are at the crossroads of many disciples, including optics, materials science, device physics, nanotechnology, and fluid dynamics. Along with the evolution of functional fibers, come new ways of thinking about the manufacturing process itself. While this field is still in its initial stages of development, there has been tremendous recent progress. To highlight the exciting developments in this field and to promote the diverse applications of functional fibers, Prof. Lei Wei (Nanyang Technological University, Singapore), Prof. Guangming Tao (Huazhong University of Science and Technology, China), Prof. Chong Hou (Huazhong University of Science and Technology, China), and Dr. Wei Yan (Massachusetts Institute of Technology, USA) are organizing a special issue on Recent Advances in Functional Fibers. Submission deadline is March 31, 2021.

Perovskite compounds have been studied for decades, but extensive attention was aroused only after the discovery of high-efficiency solar cells. In order to promote further research into the basic physics of perovskite materials for novel designs of high performance optoelectronic devices, Prof. Jiang Tang and Prof. Dehui Li (Huazhong University of Science and Technology, China) are organizing a special issue on halide perovskites: from materials to optoelectronic devices. Submission deadline is March 30, 2020.

Terahertz frequency region has attracted considerable interest, due to its unique nature and promising applications. Many breakthroughs were achieved in the past decades, including high performance sources, sensitive detectors, functional devices, interaction with matters as well as plenty applications. More recently, along with dawn of 6G applications, terahertz science and technology has been paid much more attention than ever before. In order to promote research in the area of Terahertz Science and Applications, Prof. Xinliang Zhang (Huazhong University of Science and Technology, China) and Prof. Xiaojun Wu (Beihang University, China) are planning to produce a special issue on Terahertz Science and Applications. Submission deadline is August 15, 2020.