Results 61 to 70 of about 9,331 (329)

An Optical Phased Array for LIDAR

Journal of Physics: Conference Series, 2016
We have previously demonstrated the development of an Optical Phased Array (OPA) micromechanical system (MEMS) used for beam steering, which shows great advantages over previous mechanisms such as opto-mechanical, acousto-optical (AO) or electro-optical (EO).
Y Wang, M C Wu
openaire   +1 more source

A review of research on optical true time delay technology

Journal of the European Optical Society-Rapid Publications
Light controlled phased array has the advantages of fast response speed, compact system, diverse functions, and flexible control, and has been widely applied in many scientific and technological fields.
An Ting, Liu Limin, Han Chunhui, Zhu Sai, Jiang Yunfeng   +4 more
doaj   +1 more source

Photonic Approach to Phased Array Application [PDF]

Radioengineering, 2021
Many applications, including phased array antennas, require a significant and tunable time delay, which pure electrical methods cannot establish. A variable microwave true-time delay line utilizing a photonic approach is presented in this paper.
E. Udvary
doaj  

Improved SPGD Algorithm for Optical Phased Array Phase Calibration

Applied Sciences, 2022
A chip-level optical beam steerer is an inevitable choice for next-generation light detection and ranging (LiDAR). The research on optical phased array (OPA) is the most intriguing.
Zheng Wang, Yibo Yang, Ruiting Wang, Guangzhen Luo, Pengfei Wang, Yanmei Su, Jiaoqing Pan, Yejin Zhang   +7 more
doaj   +1 more source

Optical Phased Array Light Shaping

, 2022
An apparatus comprises: a photonic integrated circuit comprising an optical phased array, a first focusing element at a fixed position relative to the optical phased array and configured to couple an optical beam to or from the optical phased array, and ...
Watts, Michael Robert, Shtyrkova, Katia
core  

Integrated optical phased array: Challenges and future trends [PDF]

APL Photonics
Integrated optical phased arrays (OPAs) enable precise, non-mechanical beam steering and have emerged as promising technology for various applications for applications spanning LiDAR, free-space optical communication, and biomedical imaging.
Yong Liu, Zhenli Dong, Hao Hu
doaj   +1 more source

A Review of Semiconductor-Based Monolithic Optical Phased Array Architectures

IEEE Open Journal of the Solid-State Circuits Society, 2021
Semiconductor-based monolithic optical phased arrays (OPA) enable optical beam-steering for lidar and 3D imaging, free-space optical communications, projection and 3D holographical displays, and neural probes among many other possible applications.
Hossein Hashemi
doaj   +1 more source

Nuclear pore links Fob1‐dependent rDNA damage relocation to lifespan control

FEBS Open Bio, EarlyView.
Damaged rDNA accumulates at a specific perinuclear interface that couples nucleolar escape with nuclear envelope association. Nuclear pores at this site help inhibit Fob1‐induced rDNA instability. This spatial organization of damage handling supports a functional link between nuclear architecture, rDNA stability, and replicative lifespan in yeast.
Yamato Okada, Mina Iwaki, Kyosuke Hagiri, Rei Izumi, Masahiko Harata, Chihiro Horigome   +5 more
wiley   +1 more source

Optical Adaptive Antenna Array for Multiuser Mobile Optical Communication

IEEE Access, 2019
In this paper, an optical adaptive antenna array system for multi-user optical mobile communication is studied. A coherent signal source is embedded in a spherical optical phased cell array with an external spherical lens system.
Haibo Wang, Zaichen Zhang, Jian Dang, Liang Wu   +3 more
doaj   +1 more source

A Design Method of Optical Phased Array With Insufficient Phase Tuning Range

IEEE Photonics Journal, 2020
Optical phased array (OPA) can achieve beam steering by controlling the phase distribution of each channel. In traditional OPA, 2π phase tuning range is required to achieve beam steering.
Bo Yang, Hongwei Chen, Sigang Yang, Minghua Chen   +3 more
doaj   +1 more source