Results 231 to 240 of about 3,041,832 (288)
Waveguide-Based Optical Phased Array
IEEE Photonics Technology Letters, 2013 A concept for a 3-D waveguide system, which can be used for optical phased arrays, is presented in this letter. We implemented static phased arrays with rod waveguides of different widths, which can be used for holographic applications. They are fabricated with direct laser writing, a technique based on two photon polymerization. As the element size of
Sascha Meyne +2 more
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Optical Phased Array Technology
Proceedings of the IEEE, 1996Optical phased arrays represent an enabling new technology that makes possible simple affordable, lightweight, optical sensors offering very precise stabilization, random-access pointing programmable multiple simultaneous beams, a dynamic focus/defocus capability, and moderate to excellent optical power handling capability.
Paul F. McManamon +10 more
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Off-Chip Beam Steering With a One-Dimensional Optical Phased Array on Silicon-on-Insulator [PDF]
Optics Letters, 2009 Optical phased arrays are versatile components enabling rapid and precise beam steering. An integrated approach is followed in which a 1D optical phased array is fabricated on silicon-on-insulator. The optical phased array consists of 16 parallel grating
Wim Bogaerts +2 more
exaly +3 more sources
Non-Redundant Optical Phased Array
Optica, 2021 Optical phased array (OPA) is a promising beam-steering device for various applications such as light detection and ranging (LiDAR), optical projection, free-space optical communication and switching.
Ryota Tanomura +2 more
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Optical phased array with on-chip phase calibration
Optics Letters, 2022Optical phased arrays (OPAs) with phase-monitoring and phase-control capabilities are necessary for robust and accurate beamforming applications. This paper demonstrates an on-chip integrated phase calibration system where compact phase interrogator structures and readout photodiodes are implemented within the OPA architecture. This enables phase-error
Mathias Prost +9 more
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Applied Optics, 2014
We demonstrate a ladar with 0.5 m class range resolution obtained by integrating a continuous-wave optical phased-array transmitter with a Geiger-mode avalanche photodiode receiver array. In contrast with conventional ladar systems, an array of continuous-wave sources is used to effectively pulse illuminate a target by electro-optically steering far ...
Juan, Montoya +3 more
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We demonstrate a ladar with 0.5 m class range resolution obtained by integrating a continuous-wave optical phased-array transmitter with a Geiger-mode avalanche photodiode receiver array. In contrast with conventional ladar systems, an array of continuous-wave sources is used to effectively pulse illuminate a target by electro-optically steering far ...
Juan, Montoya +3 more
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INTEGRATED OPTICAL PHASED ARRAY
, 2023 The present disclosure relates to an integrated optical phased array (OPA) with a large field of view (FOV), possibly up to 180 degrees FOV. One embodiment regards a chip integrated optical phased array, comprising: a phase shifter array having N input ...
LIU YONG, HU HAO
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Phase-Combining Unit for Aliasing Suppression in Optical Phased Array
Proceedings of the 2022 Conference on Lasers and Electro-Optics Pacific Rim, 2022We proposed a phase-combining unit to suppress the aliasing effect in OPA devices. It can control 2N-1 emitters with N phase shifters. Theoretical analysis, numerical simulation, and experimental results have been completed and presented.
Dachuan Wu, Bowen Yu, Yasha Yi
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Phased array of phased arrays for free space optical communications
2003 IEEE Aerospace Conference Proceedings (Cat. No.03TH8652), 2004An aperture composed of multiple small apertures has several advantages over a large continuous aperture when practical issues are included in the analysis. For example, a single bullet can easily produce a catastrophic failure of the laser communication link if all the optical gain for the transmitter (or receiver) is derived from a single large ...
S. Serati, J. Stockley
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IETE Journal of Research, 1999
This paper presents the case of an optical phased array in analogy with its counterpart in the microwave frequency region. It consists of a planar aperture array formed by the discrete illuminated core ends of a number of monomode optical fibres placed adjacent to each other in several rows.
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This paper presents the case of an optical phased array in analogy with its counterpart in the microwave frequency region. It consists of a planar aperture array formed by the discrete illuminated core ends of a number of monomode optical fibres placed adjacent to each other in several rows.
openaire +1 more source