Results 11 to 20 of about 3,491,555 (340)

Ultra-broadband on-chip twisted light emitter for optical communications. [PDF]

Light Sci Appl, 2018
On-chip twisted light emitters are essential components of orbital angular momentum (OAM) communication devices1, 2. These devices address the growing demand for high-capacity communication systems by providing an additional degree of freedom for ...
Xie Z, Lei T, Li F, Qiu H, Zhang Z, Wang H, Min C, Du L, Li Z, Yuan X.   +9 more
europepmc   +2 more sources

Blind Equalization and Channel Estimation in Coherent Optical Communications Using Variational Autoencoders [PDF]

IEEE Journal on Selected Areas in Communications, 2022
We investigate the potential of adaptive blind equalizers based on variational inference for carrier recovery in optical communications. These equalizers are based on a low-complexity approximation of maximum likelihood channel estimation.
V. Lauinger, F. Buchali, L. Schmalen
semanticscholar   +1 more source

Intelligent Reflecting Surface Assisted Free-Space Optical Communications [PDF]

IEEE Communications Magazine, 2021
Free-space optical (FSO) systems are able to offer the high data-rate, secure, and cost-efficient communication links required for applications such as wireless front- and backhauling for 5G and 6G communication networks.
V. Jamali, H. Ajam, M. Najafi, B. Schmauss, R. Schober, H. Poor   +5 more
semanticscholar   +1 more source

Temporal point-by-point arbitrary waveform synthesis beyond tera sample per second. [PDF]

Nat Commun
Arbitrary waveform synthesizers are indispensable in modern information technology, yet electronic counterparts are limited by the speed of analog-to-digital converters to hundreds of GSa/s. While photonic-assisted synthesizers offer potential to surpass
Guan Y, Wang G, Zhi Y, Chen J, Li L, Zhang J, Yao J.   +6 more
europepmc   +2 more sources

A Long-Distance Underwater Wireless Optical Link Enabled by a Solar Array With a Baseline Compensator

IEEE Photonics Journal, 2023
In this paper, a self-designed solar cell-based optical detector is proposed and demonstrated in a long-distance underwater wireless optical communication (UWOC) link.
Zhijian Tong, Xingqi Yang, Yunhai Gao, Hao Zhang, Yufan Zhang, Xiyin Wang, Jing Xu   +6 more
doaj   +1 more source

Routing, Modulation and Spectrum Assignment Algorithm Using Multi-Path Routing and Best-Fit

IEEE Access, 2021
Elastic Optical Networks (EONs) are a promising optical technology to deal with the ever-increasing traffic and the vast number of connected devices of the next generation of the Internet, associated to paradigms like the Internet of Things (IoT), the ...
Lidia Ruiz, Ramon J. Duran Barroso, Ignacio De Miguel, Noemi Merayo, Juan Carlos Aguado, Evaristo J. Abril   +5 more
doaj   +1 more source

Implementation of Large Field-of-View Detection for UWOC Systems Based on a Diffractive Deep Neural Network

IEEE Photonics Journal, 2023
The link alignment in underwater wireless optical communication (UWOC) systems is a knotty problem. The diffractive deep neural network (D2NN) has shown great potential in accomplishing tasks all optically these years.
Jianmin Xiong, Jingxuan Cheng, Huan Deng, Yan Hua, Yufan Zhang, Zihao Du, Lyufang Zhao, Ning Deng, Wenqiang Li, Zejun Zhang, Jing Xu   +10 more
doaj   +1 more source

Coherent Free-Space Optical Communications: Opportunities and Challenges

Journal of Lightwave Technology, 2022
The ever-increasing data rate demand for wireless systems is pushing the physical limits of standalone radio-frequency communications, thus fostering the blooming of novel high-capacity optical wireless solutions.
F. Guiomar, M. Fernandes, J. L. Nascimento, V. Rodrigues, P. Monteiro   +4 more
semanticscholar   +1 more source

Design of Full Stokes Vector Polarimetry Based on Metasurfaces for Wide-Angle Incident Light

Photonics, 2023
Polarization measurement plays an important role in optical detection, communication, and imaging systems. Compact polarimetry with a wide angle of incident light will break the restrictions of the limited incident angle and improve its practicality.
Songjie Liu, Zejun Zhang, Jingxuan Cheng, Xiyin Wang, Shixiao Sun, Jing Xu   +5 more
doaj   +1 more source

Multifunctional Optical Crystals for All-Solid-State Raman Lasers

Crystals, 2021
In the past few decades, the multifunctional optical crystals for all-solid-state Raman lasers have been widely studied by many scholars due to their compactness, convenience and excellent performance.
Hui Zhao, Shibo Dai, Siqi Zhu, Hao Yin, Zhen Li, Zhenqiang Chen   +5 more
doaj   +1 more source