Results 1 to 10 of about 4,833 (151)

Ultra-Compact and Broadband Nano-Integration Optical Phased Array [PDF]

Nanomaterials, 2023
The on-chip nano-integration of large-scale optical phased arrays (OPAs) is a development trend. However, the current scale of integrated OPAs is not large because of the limitations imposed by the lateral dimensions of beam-splitting structures.
Zhicheng Wang, Junbo Feng, Haitang Li, Yuqing Zhang, Yilu Wu, Yuqi Hu, Jiagui Wu, Junbo Yang   +7 more
doaj   +4 more sources

All-Solid-State Beam Steering via Integrated Optical Phased Array Technology [PDF]

Micromachines, 2022
Light detection and ranging (LiDAR), combining traditional radar technology with modern laser technology, has much potential for applications in navigation, mapping, and so on.
Shi Zhao, Jingye Chen, Yaocheng Shi
doaj   +4 more sources

Intensive and Efficient Design of a Two-dimensional 8 × 8 Silicon-Based Optical Phased Array Transceiver [PDF]

Sensors, 2023
In recent years, the silicon-based optical phased array has been widely used in the field of light detection and ranging (LIDAR) due to its great solid-state steering ability.
Yaoyuan Zhang, Rui Wang, Haibo Liu, Guobin Zhao, Ming Wei, Ruitao Jiang, Kunyang Du   +6 more
doaj   +2 more sources

Energy-efficient integrated silicon optical phased array [PDF]

Frontiers of Optoelectronics, 2023
An optical phased array (OPA) is a promising non-mechanical technique for beam steering in solid-state light detection and ranging systems. The performance of the OPA largely depends on the phase shifter, which affects power consumption, insertion loss ...
Huaqing Qiu, Yong Liu, Xiansong Meng, Xiaowei Guan, Yunhong Ding, Hao Hu   +5 more
doaj   +2 more sources

High-Efficiency, Wide Working Bandwidth Antenna Based on SOI Platform for Optical Phased Array [PDF]

Micromachines, 2021
A novel structure of a subwavelength surface optical antenna for optical phased array is proposed in this paper. An asymmetric vertical grating structure is applied to achieve high emission efficiency (73% at 1550 nm).
Zihao Wang, Jiali Liao, Yixiang Xie, Yanling Sun, Xifeng Li, Wei Li   +5 more
doaj   +2 more sources

Wide-angle non-uniform optical phased array using compact and efficient antenna design [PDF]

Scientific Reports
In the need for a more compact and efficient optical phased array with a wide steering beam for LIDAR applications, a wide steering array with high resolution is desirable.
Omar E. Elsheikh, Mohamed A. Swillam
doaj   +2 more sources

Optimization of a programmable λ/2-pitch optical phased array [PDF]

Nanophotonics
A challenge in optical phased arrays (OPAs) is to achieve single-lobe emission using densely spaced emitters without incurring inter-waveguide optical crosstalk.
Sharma Ankita, Straguzzi John N., Xue Tianyuan, Govdeli Alperen, Chen Fu Der, Stalmashonak Andrei, Sacher Wesley D., Poon Joyce K. S.   +7 more
doaj   +2 more sources

Silicon Ribbon-Based Dual-Beam Optical Phased Array with Low Crosstalk and Large FoV

Applied Sciences, 2022
In this paper, a silicon ribbon (SR)-based microstructure is developed and added to a 32-channel optical phased array (OPA) to reduce the crosstalk between the antennas of grating waveguides.
Hsun-Yuan Chi, Wei Hong, Hsuan Lai, Shih-Hsiang Hsu, Che-Chang Chang   +4 more
doaj   +3 more sources

Active optical phased array integrated within a micro-cantilever [PDF]

Communications Engineering
Three dimensional sensing is essential in order that machines may operate in and interact with complex dynamic environments. Solid-state beam scanning devices are seen as being key to achieving required system specifications in terms of sensing range ...
Sylvain Guerber, Daivid Fowler, Laurent Mollard, Christel Dieppedale, Gwenael Le Rhun, Antoine Hamelin, Jonathan Faugier-Tovar, Kim Abdoul-Carime   +7 more
doaj   +2 more sources

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   +3 more sources