Zobrazeno 1 - 10
of 32
pro vyhledávání: '"David R. Gozzard"'
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
Publikováno v:
Sensors, Vol 21, Iss 23, p 7904 (2021)
Satellite-mediated quantum key distribution (QKD) is set to become a critical technology for quantum-secure communication over long distances. While satellite QKD cannot be effectively eavesdropped, we show it can be disrupted (or ‘jammed’) with
Externí odkaz:
https://doaj.org/article/8e210cbdbce940e2a5d1b8ad9914dc22
Autor:
David R. Gozzard, Marjan G. Zadnik
Publikováno v:
Physical Review Physics Education Research, Vol 17, Iss 1, p 010134 (2021)
Introductory university astronomy courses have emerged as a powerful opportunity to improve science understanding, literacy, and appreciation of the scientific method to a wide range of future citizens and voters. Students in an introductory astronom
Externí odkaz:
https://doaj.org/article/ca72ca3ff9274b90bab8f70d7b9e3ccd
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
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
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
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
Publikováno v:
Optics Letters. 47:5124
Step-index optical fiber preforms are manufactured and drawn into fibers using low-cost consumer-grade fused deposition modeling (FDM) 3D printers with no other specialist tooling. The fibers are fabricated from polyethylene terephthalate glycol (PET