Results 111 to 120 of about 20,016 (146)
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Journal of the Optical Society of America A: Optics and Image Science, and Vision, 2006
Free-space laser communication systems use optical-fiber-based technology such as optical amplifiers, receivers, and high-speed modulators. In these systems using single-mode fibers, the fiber coupling efficiency is one of the most significant issues to be solved.
M. Toyoshima
exaly +4 more sources
Free-space laser communication systems use optical-fiber-based technology such as optical amplifiers, receivers, and high-speed modulators. In these systems using single-mode fibers, the fiber coupling efficiency is one of the most significant issues to be solved.
M. Toyoshima
exaly +4 more sources
Coupling efficiency of a plane wave to few-mode fiber in the presence of beam random angular jitter
Journal of the Optical Society of America B: Optical Physics, 2021Using few-mode fiber to receive spatial light is an important method to obtain high coupling efficiency in long-distance free space optical communication systems. Here, we deal with the influence of random angular jitter on few-mode fiber coupling. First, the expression of mean-coupling efficiency from a spatial plane wave to few-mode fiber in the ...
Yunhao Chen +2 more
exaly +2 more sources
Random Jitter Beamforming for point-and-link communications
Symposium on Software Performance, 2012We introduce a new concept of communication technology called point-and-link communications, which aims to bring convenience to the users of D2D communications in LOS situations.
Byung-Jae Kwak +2 more
exaly +2 more sources
Journal of the Optical Society of America A: Optics and Image Science, and Vision, 2002
Keizo Nakagawa
exaly +2 more sources
Keizo Nakagawa
exaly +2 more sources
IEEE Journal of Quantum Electronics, 2023
In space chaotic optical communication system, when chaotic signal is coupled into the fiber at receiving terminal, it will be affected by the lateral alignment error. To study the influence of it on space chaotic optical communication system, this paper
Mi Li +4 more
semanticscholar +1 more source
In space chaotic optical communication system, when chaotic signal is coupled into the fiber at receiving terminal, it will be affected by the lateral alignment error. To study the influence of it on space chaotic optical communication system, this paper
Mi Li +4 more
semanticscholar +1 more source
Coupling condition analysis of Bessel–Gaussian beam to few mode fibers
Modern physics letters B, 2023In this paper, the theoretical model of the coupling efficiency of BG beams to few-mode fibers (FMFs) in the case of perfect alignment, lateral or vertical offsets, and random angular jitter is investigated and compared with that of sew-mode fibers (SMFs)
Renxuan Liu +5 more
semanticscholar +1 more source
Modeling and evaluation of ADAS camera jitter due to road-induced random vibration using Ansys Speos
AR | VR | MRThe increasing integration of Advanced Driver Assistance Systems (ADAS) in modern vehicles places high demands on the reliability and accuracy of onboard camera systems.
M. Falahati +3 more
semanticscholar +1 more source
A 20-GHz PLL With 20.9-fs Random Jitter
IEEE Journal of Solid-State Circuits, 2023This article describes an integer- $N$ phase-locked loop (PLL) that incorporates a phase detector sampling both the rising and falling edges of the reference clock. The circuit also uses a new retiming method in the feedback divider.
Yu Zhao, M. Forghani, Behzad Razavi
semanticscholar +1 more source
Optics Communications, 2019
In this paper, we present the result that the performances of the highly sensitive adaptive coherent fiber coupling (ACFC) technology, which consists of a movable fiber tip and a coherent detector.
Mo Chen, Chao Liu, Daoman Rui, H. Xian
semanticscholar +1 more source
In this paper, we present the result that the performances of the highly sensitive adaptive coherent fiber coupling (ACFC) technology, which consists of a movable fiber tip and a coherent detector.
Mo Chen, Chao Liu, Daoman Rui, H. Xian
semanticscholar +1 more source
Coupling efficiency of plane wave to few-mode fiber in the presence of beam random angular jitter
, 2021Yunhao Chen +4 more
semanticscholar +1 more source