![]() This state-of-the-art forecasting tool will optimise Viasat’s ground station design, as well as support operational decision-making such as network switching between ground stations based on atmospheric conditions. Leading the project is Associate Professor James Osborn in the Department of Physics, who will work with Viasat to further develop Durham’s measurement software so that it can be used and easily understood by non-specialists. This is an important step in making FSO technology become more commercially viable and easier to deploy. To overcome this, the team at Durham have developed the only optical turbulence measurement device capable of measuring continuously, day and night, and in strong turbulence conditions. Freespace Optical Communication Using Aperture Averaging and Spatial Diversity in Log Normal Channel Physics. This has slowed the adoption of FSO technology as these disturbances are hard to monitor and predict. In addition, FSO communication provides another layer of security with optical links being highly resistant to jamming, spoofing, and electro-magnetic interference.Ītmospheric disturbances, such as clouds and turbulence, can disrupt laser signals as they propagate through the atmosphere. Free-space optical communication has been implemented between satellites since the 90s using directly modulated high power laser diodes at 820 nm to 850 nm. ![]() A lab simulation for outer space solar laser communication was performed. Bryan S Robinson of MIT Lincoln Lab, companies already providing optical transceivers for flight include SA Photonics, US, and Germanys Tesat Spacecom and Mynaric. 781 Mbit/s photon-counting optical communications using a. According to Hemmati, who opened the Photonics West Free-Space Laser Communication session with Dr. Using ultra-high bandwidths, laser communications provide larger and faster data transfer rates. Free-space optical communication, using direct sun to laser conversion, can contribute to overcome these problems. Detailed experimental set up of the free-space communication system. This research will support delivery of a software-controlled telescope for turbulence characterisation, as well as prediction modelling.ĭurham researchers are embarking on the first phase of a project to measure and mitigate optical turbulence in the Earth’s atmosphere to support Viasat’s work in FSO communications networks.įree-space optical communication is a revolutionary way of using lasers to send and receive data in point-to-point terrestrial, space, and space to ground links. ![]() Leveraging a £200k investment from Viasat, Durham University will focus on developing free-space optics (FSO) turbulence channel characterisation for optical feeder links.
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