Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Sascha W. Schediwy"'
Autor:
Shane M. Walsh, Skevos F. E. Karpathakis, Ayden S. McCann, Benjamin P. Dix-Matthews, Alex M. Frost, David R. Gozzard, Charles T. Gravestock, Sascha W. Schediwy
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-12 (2022)
Abstract Free-space optical communications are poised to alleviate the data-flow bottleneck experienced by spacecraft as traditional radio frequencies reach their practical limit. While enabling orders-of-magnitude gains in data rates, optical signal
Externí odkaz:
https://doaj.org/article/5675c0234b9242cd88d669743b4771f4
Autor:
Benjamin P. Dix-Matthews, Sascha W. Schediwy, David R. Gozzard, Etienne Savalle, François-Xavier Esnault, Thomas Lévèque, Charles Gravestock, Darlene D’Mello, Skevos Karpathakis, Michael Tobar, Peter Wolf
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)
Atomic clocks and their networks are useful tools for optical communications and frequency metrology. Here the authors use phase stabilization and active tip-tilt to suppress atmospheric effects and enable optical frequency transfer through free-spac
Externí odkaz:
https://doaj.org/article/05fc4052970040a68e0158266aff628f
Autor:
Skevos F. E. Karpathakis, Benjamin P. Dix-Matthews, Shane M. Walsh, Ayden S. McCann, David R. Gozzard, Alex M. Frost, Charles T. Gravestock, Sascha W. Schediwy
Publikováno v:
Drones, Vol 7, Iss 2, p 99 (2023)
Free-space optical (FSO) communication promises to bring fibre-like speeds to data transmissions between ground, sky and space. This is becoming more important in light of the increasing volume of data collected by aircraft and spacecraft. The Univer
Externí odkaz:
https://doaj.org/article/4fe90e4f1c1e4563859348957f182b3e
Autor:
Benjamin P. Dix-Matthews, David R. Gozzard, Skevos F.E. Karpathakis, Shane M. Walsh, Ayden McCann, Alex Frost, Sascha W. Schediwy
Publikováno v:
Physical Review Applied. 19
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::33829ba5d91aab1123bfc1e21d33cd29
https://doi.org/10.1103/physrevapplied.19.054018
https://doi.org/10.1103/physrevapplied.19.054018
Autor:
Skevos F. E. Karpathakis, Benjamin P. Dix-Matthews, Sascha W. Schediwy, David R. Gozzard, Charles Gravestock
Publikováno v:
IEEE Communications Letters. 25:1610-1614
Free-space optical (FSO) communications have the potential to revolutionize wireless communications due to the advantages of greater inherent security, high-directionality, high available bandwidth and small physical footprint. The effects of atmosph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::88066eed9492e7ac837443694e108216
https://doi.org/10.1109/lcomm.2021.3053943
https://doi.org/10.1109/lcomm.2021.3053943
Publikováno v:
Applied Optics. 62:G85
We demonstrate 111.8 Gb/s coherent optical communication throughput over a 10.3 km folded free-space laser range. Folded links are low complexity to establish and provide a high uptime for testing equipment. The communication signals were sourced fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::185b07afca5c48b1c053d39d4dc6f76e
https://doi.org/10.1364/ao.491440
https://doi.org/10.1364/ao.491440
Autor:
Benjamin P. Dix-Matthews, David R. Gozzard, Shane M. Walsh, Ayden S. McCann, Skevos F. E. Karpathakis, Alex M. Frost, Charles T. Gravestock, Sascha W. Schediwy
Publikováno v:
Optics Express. 31:15075
Geopotential and orthometric height differences between distant points can be measured via timescale comparisons between atomic clocks. Modern optical atomic clocks achieve statistical uncertainties on the order of 10−18, allowing height difference
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::accb65d33010bfb4732da010bed90c3f
https://doi.org/10.1364/oe.483767
https://doi.org/10.1364/oe.483767
Autor:
Sascha W. Schediwy, Darlene D’Mello, David R. Gozzard, Charles Gravestock, Francois-Xavier Esnault, Benjamin P. Dix-Matthews, Skevos F. E. Karpathakis, Etienne Savalle, Peter Wolf, Thomas Leveque, Michael E. Tobar
Publikováno v:
Nature Communications
Nature Communications, Nature Publishing Group, 2021, 12 (1), pp.515. ⟨10.1038/s41467-020-20591-5⟩
Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)
Nature Communications, Nature Publishing Group, 2021, 12 (1), pp.515. ⟨10.1038/s41467-020-20591-5⟩
Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)
Timescale comparison between optical atomic clocks over ground-to-space and terrestrial free-space laser links will have enormous benefits for fundamental and applied science, from measurements of fundamental constants and searches for dark matter, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f58c51be974f1a315b0f74e96bfa84f
https://hal.archives-ouvertes.fr/hal-02922208/file/s41467-020-20591-5.pdf
https://hal.archives-ouvertes.fr/hal-02922208/file/s41467-020-20591-5.pdf
Autor:
Simon P. Driver, Michael E. Tobar, Karl Ulrich Schreiber, Sascha W. Schediwy, Randall Carman, David R. Gozzard, Benjamin P. Dix-Matthews
Doppler orbitography uses the Doppler shift in a transmitted signal to determine the orbital parameters of satellites including range and range-rate (or radial velocity). We describe two techniques for atmospheric-limited optical Doppler orbitography
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b91666de6050f77e597c89256097b2cd
http://arxiv.org/abs/2005.02546
http://arxiv.org/abs/2005.02546
Autor:
Francis Bennet, Kate Ferguson, Ken Grant, Ed Kruzins, Sascha W. Schediwy, Nicholas J. Rattenbury
Publikováno v:
Free-Space Laser Communications XXXII.
The limited bandwidth and security provided by radio frequency communications between the ground and space can be overcome with optical communications. The smaller beam divergence and high carrier frequency increase the bandwidth and brings with it t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::045eee3ceeb5f9a236a5ac280fe0d21f
https://doi.org/10.1117/12.2545305
https://doi.org/10.1117/12.2545305