Results 11 to 20 of about 18,719 (306)
Observation of strong backscattering in valley-Hall photonic topological interface modes [PDF]
Nature Photonics, 2022 This work investigates the real-world value of topological protection in reciprocal photonics. Measurements of propagation losses in the slow-light regime of valley-Hall topological waveguides yield no indications of topological protection against ...
C. Rosiek +6 more
semanticscholar +1 more source
Symbiotic Radio: Cognitive Backscattering Communications for Future Wireless Networks [PDF]
IEEE Transactions on Cognitive Communications and Networking, 2020 The heterogenous wireless services and exponentially growing traffic call for novel spectrum- and energy-efficient wireless communication technologies.
Ying-Chang Liang +3 more
semanticscholar +1 more source
Coherent suppression of backscattering in optical microresonators [PDF]
Light: Science & Applications, 2020 As light propagates along a waveguide, a fraction of the field can be reflected by Rayleigh scatterers. In high-quality-factor whispering-gallery-mode microresonators, this intrinsic backscattering is primarily caused by either surface or bulk material ...
A. Svela +6 more
semanticscholar +1 more source
Nonreciprocal Optomechanical Entanglement against Backscattering Losses.
Physical Review Letters, 2020 We propose how to achieve nonreciprocal quantum entanglement of light and motion and reveal its counterintuitive robustness against random losses. We find that by splitting the counterpropagating lights of a spinning resonator via the Sagnac effect ...
Y. Jiao +5 more
semanticscholar +1 more source
Wireless-Powered Device-to-Device Communications With Ambient Backscattering: Performance Modeling and Analysis [PDF]
IEEE Transactions on Wireless Communications, 2017 The recent advanced wireless energy harvesting technology has enabled wireless-powered communications to accommodate wireless data services in a self-sustainable manner.
Xiao Lu +4 more
semanticscholar +1 more source
Pixelated VLC-Backscattering for Self-Charging Indoor IoT Devices [PDF]
IEEE Photonics Technology Letters, 2016 Visible light communication (VLC) backscatter has been proposed as a wireless access option for Internet of Things. However, the throughput of the state-of-the-art VLC backscatter is limited by simple single-carrier pulsed modulation scheme, such as ON ...
Sihua Shao +2 more
semanticscholar +1 more source
Remote Sensing, 2019 The main objective of this work was to retrieve surface soil moisture (SSM) by using scattering models and a support vector machine (SVM) technique driven by backscattering coefficients obtained from Sentinel-1 satellite images acquired over bare ...
J. Ezzahar +8 more
semanticscholar +1 more source
Built-up area analysis using Sentinel data in metropolitan areas of Transylvania, Romania
Hungarian Geographical Bulletin, 2021 The anthropic and natural elements have become more closely monitored and analysed through the use of remote sensing and GIS applications. In this regard, the study aims to feature a different approach to produce more and more thematic information ...
Constantin Oșlobanu, Mircea Alexe
doaj +1 more source
Grassland Mowing Detection Using Sentinel-1 Time Series: Potential and Limitations
Remote Sensing, 2021 Grasslands encompass vast and diverse ecosystems that provide food, wildlife habitat and carbon storage. Their large range in land use intensity significantly impacts their ecological value and the balance between these goods and services.
Mathilde De Vroey +2 more
doaj +1 more source
Multiwave Matrix Polarization Lidar
Atmosphere, 2023 Remote control of the state of the atmosphere is an urgent problem nowadays. The problem of remote monitoring of the optical parameters of the atmosphere is solved using a matrix polarization lidar (MPL).
Sergei N. Volkov +4 more
doaj +1 more source