Results 31 to 40 of about 4,667 (157)
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 +7 more
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Scalable low-latency optical phase sensor array
Optica, 2023 Optical phase measurement is critical for many applications, and traditional approaches often suffer from mechanical instability, temporal latency, and computational complexity. In this paper, we describe compact phase sensor arrays based on integrated photonics, which enable accurate and scalable reference-free phase sensing in a few measurement steps.
Zhanghao Sun +7 more
openaire +2 more sources
A review of research on optical true time delay technology
Journal of the European Optical Society-Rapid PublicationsLight 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 +4 more
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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
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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 +3 more
doaj +1 more source
Applied Physics ExpressWe report a coherent laser transmitter for free space optical communications based on multiwavelength coherent beam combining. We performed 5.6 Gbps free-space optical communications using a two-element optical phased array with three wavelengths ...
Eisuke Haraguchi +6 more
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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 +3 more
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Demonstration of 128-Channel Optical Phased Array With Large Scanning Range
IEEE Photonics Journal, 2021 We have proposed a 128-channel silicon-based optical phased array (OPA) chip with an overall antenna, and a large two-dimensional scanning range of 104.0° × 17.6° was achieved.
Guangzhen Luo +9 more
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Silicon optical phased array with calibration-free phase shifters
Optics Express, 2022 Optical phased array (OPA) based on silicon photonics is considered as a promising candidate for realizing solid-state beam steering. However, the high refractive index contrast of the silicon waveguides leads to conventional silicon based OPA suffering from large random phase errors, which require complex post-processing such as time-consuming phase ...
Wenlei Li +4 more
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High-speed ghost imaging by an unpredictable optical phased array
Frontiers in Physics, 2022 Ghost imaging (GI) retrieves an image from the correlation between a sequence of illumination patterns on the object and their corresponding bucket detections.
Xuyang Sun +10 more
doaj +1 more source