Results 31 to 40 of about 117,276 (312)

The Effect of Spatial Mode Distribution on Coupling Efficiency of Single-Mode Fiber: Theoretical Analysis and Experimental Verification

Applied Sciences, 2019
In this study, Zernike polynomials and optical fiber field theory are applied to build a mathematical model of coupling efficiency (CE) and spatial mode of aberrations.
Yongkai Liu, Jianli Wang, Lie Ma, Shijie Gao, Chenzi Guo, Kainan Yao, Lei Sheng   +6 more
doaj   +1 more source

Based on adaptive modulation laser communication multi-microgrids scheduling system

Frontiers in Physics, 2023
In order to improve the data sharing and comprehensive information processing capabilities between multi-microgrids in the power system, the multi-microgrids scheduling system based on laser communication has been proposed.
Ying Chang, Dajun Chang, Li Su
doaj   +1 more source

Laser Application and Sparse Imaging Analysis of Diffractive Optical System

Leida xuebao, 2020
In recent years, the diffractive optical systems have developed rapidly. Diffractive devices such as binary optical device and membrane-based lens are equivalent to fixed phase shifters of microwave antennas.
LI Daojing, ZHU Yu, HU Xuan, YU Haifeng, ZHOU Kai, ZHANG Running, LIU Lei   +6 more
doaj   +1 more source

Solar Pumped Lasers for Free Space Laser Communication

Proceedings of the 7th International Conference on Photonics, Optics and Laser Technology, 2019
Solar Pumped Lasers (SPL) is a kind of lasers that can transform solar light into laser directly, with the advantages of least energy transform procedure, higher energy transform efficiency, higher reliability, and longer lifetime, which is suitable for use in unattended space system, for solar light is the only form of energy source in space. In order
Changming Zhao, Haiyang Zhang, Zhe Guan, Zitao Cai, Dongbing He, Yongheng Wang   +5 more
openaire   +1 more source

Review of long period fiber gratings written by CO₂ laser

, 2010
This paper presents a systematic review of long period fiber gratings (LPFGs) written by the CO2 laser irradiation technique. First, various fabrication techniques based on CO2 laser irradiations are demonstrated to write LPFGs in different types of ...
Yiping Wang, Wang, Yiping
core   +1 more source

Experiment of Suppressing Atmospheric Turbulence by Using Fast-Steering Mirror

Applied Sciences
With the aim of addressing the problem of spot drift caused by laser transmission in atmospheric turbulence, the effects of different weather conditions such as sunny, cloudy, rainy and sandstorm conditions on spot drift were measured at 0.42 km, 2 km ...
Yingmin Yuan, Xizheng Ke, Rui Wang
doaj   +1 more source

Research on underwater wireless dynamic optical communication system based on PPM modulation

Frontiers in Physics, 2023
In order to achieve underwater wireless dynamic optical communication, a laser communication system is proposed based on Pulse Position Modulation (PPM).
Bing Dong, Shoufeng Tong, Peng Zhang, Jiaxing Wang   +3 more
doaj   +1 more source

Performance Analysis of Space-to-Ground Downlink for Polarization Shift Keying Optical Communications with a Gaussian-Schell Model Beam

Photonics
Free-space optical communication has emerged as a pivotal technology for space-to-ground downlinks; however, signal degradation caused by atmospheric turbulence continues to pose a significant challenge.
Jiajie Wu, Yuwei Zhang, Qingyan Li, Siyuan Yu, Jianjie Yu   +4 more
doaj   +1 more source

Simultaneous laser ranging and communication from an Earth-based satellite laser ranging station to the Lunar Reconnaissance Orbiter in lunar orbit

, 2013
We report a free space laser communication experiment from the satellite laser ranging (SLR) station at NASA Goddard Space Flight Center (GSFC) to the Lunar Reconnaissance Orbiter (LRO) in lunar orbit through the on board one-way Laser Ranging (LR ...
Skillman, David R., Xiaoli Sun, Krainak, Michael A., Hoffman, Evan D., Michael A. Krainak, Zuber, Maria T., Wai H. Fong, Leva McIntire, Dandan Mao, Neumann, Gregory A., Jan F. McGarry, Evan D. Hoffman, Frederic M. Davidson, Sun, Xiaoli, McIntire, Leva, Zellar, Ronald S., Gregory A. Neumann, Smith, David E., Ronald S. Zellar, David R. Skillman, David E. Smith, Smith, David Edmund, Maria T. Zuber, Fong, Wai H., Mao, Dandan, McGarry, Jan F., Zuber, Maria, Davidson, Frederic M.   +27 more
core   +1 more source

Topology Control of Low-Connection UAV Laser Network with Virtual Nodes

Applied Sciences
Space laser communication technology has advantages such as high bandwidth and low interference, but the limitation of the load capacity of an unmanned aerial vehicle (UAV) makes it difficult for UAV clusters to have sufficient communication links to ...
Pengyu Wang, Qingkui Li, Junkai Yi
doaj   +1 more source