Results 11 to 20 of about 20,118 (299)

An Introduction to Free-space Optical Communications

Radioengineering, 2010
Over the last two decades free-space optical communication (FSO) has become more and more interesting as an adjunct or alternative to radio frequency communication.
H. Henniger, O. Wilfert
doaj   +4 more sources

Orbital angular momentum and beyond in free-space optical communications [PDF]

Nanophotonics, 2021
Orbital angular momentum (OAM), which describes tailoring the spatial physical dimension of light waves into a helical phase structure, has given rise to many applications in optical manipulation, microscopy, imaging, metrology, sensing, quantum science,
Wang Jian, Liu Jun, Li Shuhui, Zhao Yifan, Du Jing, Zhu Long   +5 more
doaj   +2 more sources

Bidirectional wavelength-division-multiplexing fibre-free-space optical communications using polarisation multiplexing technique and tunable optical vestigial sideband filter [PDF]

Communications Engineering
To address the growing demand from emerging applications, high transmission capacity is essential for both fibre backbones and last-mile communications.
Hsiao-Mei Lin, Chia-Peng Wang, Hai-Han Lu, Stotaw Talbachew Hayle, Xu-Hong Huang, Wei-Wen Hsu, Yu-Chen Chung, Yu-Yao Bai, Kelper Okram, Jia-Ming Lu   +9 more
doaj   +2 more sources

Evaluation of Optimal Visible Wavelengths for Free-Space Optical Communications [PDF]

Telecom
Free-space optical (FSO) communications have emerged as a promising complement to conventional radio-frequency (RF) systems due to their high bandwidth, low interference, and license-free spectrum.
Modar Dayoub, Hussein Taha
doaj   +2 more sources

Terrestrial Free-Space Optical Communications [PDF]

, 2010
Book abstract: Mobile and wireless communications applications have a clear impact on improving the humanity wellbeing. From cell phones to wireless internet to home and office devices, most of the applications are converted from wired into wireless communication.
Zabih Ghassemlooy, Wasiu O. Popoola
openalex   +3 more sources

Structuring light with flows [PDF]

Nature Communications
Structured light has profoundly advanced optical manipulation, processing and imaging. However, its practical deployment in free space is limited by the constrained solutions of Helmholtz equation, which are bound to fixed propagation laws.
Wenxiang Yan, Zheng Yuan, Yuan Gao, Zhaozhong Chen, Zhi-Cheng Ren, Xi-Lin Wang, Jianping Ding, Hui-Tian Wang   +7 more
doaj   +2 more sources

Free-space optical communications at 4 Gbit/s data rate with a terahertz laser. [PDF]

Commun Phys
Elumalai J, Salih M, Fice M, Brown A, Li L, Linfield EH, Valavanis A, Seeds AJ, Davies AG, Freeman JR.   +9 more
europepmc   +2 more sources

Multi-Actuator Lens Systems for Turbulence Correction in Free-Space Optical Communications [PDF]

Photonics
The implementation of efficient free-space channels is fundamental for both classical and quantum free-space optical (FSO) communication. This can be challenging for fiber-coupled receivers, due to the time variant inhomogeneity of the refractive index ...
Matteo Schiavon, Antonio Vanzo, Kevin Campaci, Valentina Marulanda Acosta, Stefano Bonora   +4 more
doaj   +2 more sources

High-performance 100 Gbps free-space optical communication via optical pin beam receiver [PDF]

Communications Engineering
Free-space optical communication with high transmission bandwidth and small antenna size has been progressively deployed for ground-air-space communications in recent years.
Meiling Guan, Yang Liu, Huahua Wang, Hongyue Xiao, Hongpeng Lu, Hongman Zhang, Hongwei Jiang, Chengming Sun, Huijian Liang, Changzhi Xu, Lu Gao, Haiping Mei, Yan Li, Jian Wu, Zhigang Chen, Ze Zhang   +15 more
doaj   +2 more sources

High-Capacity Free-Space Optical Communications Between a Ground Transmitter and a Ground Receiver via a UAV Using Multiplexing of Multiple Orbital-Angular-Momentum Beams. [PDF]

Sci Rep, 2017
Li L, Zhang R, Zhao Z, Xie G, Liao P, Pang K, Song H, Liu C, Ren Y, Labroille G, Jian P, Starodubov D, Lynn B, Bock R, Tur M, Willner AE.   +15 more
europepmc   +3 more sources