A new record for the fastest ever data rate for digital information has been set by UCL researchers in the Optical Networks Group. They achieved a rate of 1.125 Tb/s as part of research on the capacity limits of optical transmission systems, designed to address the growing demand for fast data rates.
Lead researcher, Dr Robert Maher, UCL Electronic & Electrical Engineering, said: “While current state-of-the-art commercial optical transmission systems are capable of receiving single channel data rates of up to 100 gigabits per second (Gb/s), we are working with sophisticated equipment in our lab to design the next generation core networking and communications systems that can handle data signals at rates in excess of 1 terabit per second (Tb/s).
“For comparison this is almost 50,000 times greater than the average speed of a UK broadband connection of 24 megabits per second (Mb/s), which is the current speed defining “superfast” broadband. To give an example, the data rate we have achieved would allow the entire HD Games of Thrones series to be downloaded within one second.”
The study, published today in Scientific Reports, used techniques from information theory and digital signal processing to custom build an optical communications system with multiple transmitting channels and a single receiver. As part of the EPSRC-funded UNLOC programme, the project set out to investigate ways to improve the optical network infrastructure to support the explosion of digital content, cloud and e-health services, as well as the ubiquitous connectivity of smart devices referred to as the Internet of Things (IoT).
Professor Polina Bayvel, the principal investigator of the UNLOC programme at UCL, said: “This result is a milestone as it shows that terabit per second optical communications systems are possible in the quest to reach ever higher transmission capacities in optical fibres that carry the vast majority of all data generated or received. A high-capacity digital communications infrastructure underpins the internet and is essential to all aspects of the digital economy and everyday lives.”
The team determined the best way of encoding information in optical signals, taking into account the limitations of the transmitter and receiver. They then applied coding techniques commonly used in wireless communications, but not yet widely used in optical communications, to ensure the transmitted signals are adapted to distortions in the system electronics.
Using UNLOC’s state-of-the-art lab facilities, the researchers built the new optical system and measured its performance. Fifteen channels, each carrying an optical signal of different wavelength were modulated using the 256QAM format typically used in cable modems, combined and sent to a single optical receiver for detection. By grouping the channels together, the team created a ‘super-channel’ which although not yet commercially available, is widely believed to be a way forward for the next generation of high-capacity communication systems.
“Using high-bandwidth super-receivers enables us to receive an entire super-channel in one go. Super-channels are becoming increasingly important for core optical communications systems, which transfer bulk data flows between large cities, countries or even continents. However, using a single receiver varies the levels of performance of each optical sub-channel so we had to finely optimise both the modulation format and code rate for each optical channel individually to maximise the net information data rate. This ultimately resulted in us achieving the greatest information rate ever recorded using a single receiver,” said Dr Maher.
In this study, the researchers connected the transmitter directly to the receiver to achieve the maximum data rate. They will now test the system and measure the achievable data rates in a long distance transmission scenario where optical signals can become distorted as they travel through thousands of kilometres of optical fibres.
Learn more: Record for fastest data rate set
The Latest on: Optical data transport
via Google News
The Latest on: Optical data transport
Optical Transport Network Market Research 2019, Business Opportunity, Global Trend, Future Growth, Key Findings and Forecast to 2024
on May 23, 2019 at 10:23 pm
Get a Sample Copy of this report @ :- https://www.marketreportsworld.com/enquiry/request-sample/12343783 Global Optical Transport Network Industry 2019 Market Research Report is spread across 102 ... […]
ZTE’s 5G Transport Network Automation
on May 23, 2019 at 2:04 am
The telemetry technology is introduced to support real-time feedback in milliseconds, providing accurate real-time data ... test in IP+optical synergy, network slicing, intelligent private line, ... […]
Intelligent Control, Simplified Management – ZTE Intelligent OTN Solution
on May 22, 2019 at 3:19 pm
(Internet Data Center) interconnect ... ZTE's intelligent OTN solution will build simple, efficient, flexible and open optical transport networks for customers with the help of AI. ... […]
Follow the Money: Optical Trends From NGON 2019
on May 22, 2019 at 6:54 am
France -- NGON & DCI World 2019 -- Anyone hoping for a major boost in spending on optical networking systems in the build-up to 5G launches will have been disappointed, according to market data ... […]
ADVA Optical Networking SE: ADVA launches new FSP 3000 TeraFlex capabilities to dramatically boost network capacity
on May 21, 2019 at 12:05 am
Ultra-flexible modulation technique enables existing networks to carry up to 30 times more data Nice, France. May 21, 2019. ADVAterminal now enables existing optical networks to ... for 10Gbit/s ... […]
Optical neural network at 50zJ per op? Nope, but it’s still a good idea
on May 20, 2019 at 9:02 am
In the optical neural network ... Instead, the big win is in energy saved for data transport. A large neural network might be spread across multiple GPU cards. This creates two large energy ... […]
Computational time-of-flight diffuse optical tomography
on May 20, 2019 at 8:19 am
in combination with computational processing of the spatial and full temporal photon distribution data, imaging of an object embedded inside a strongly diffusive medium over more than 80 transport ... […]
ZTE “IP+Optical” Enables Elastic Slicing
on May 20, 2019 at 5:25 am
ZTE’s innovative IP+Optical-based elastic slicing solution introduces the scheduling and O&M concepts in computing resources in cloud data center into the operators’ transport network. It offers ... […]
Global Optical Modulator Market Demand, Growth, Outlook, Share & Forecast 2018 to 2024
on May 20, 2019 at 5:01 am
According to KD Market Insight, leader of the team that prepared the research, “Optical modulators bring efficiency and far lower prices to 100G and 400G data transport markets. HPC, high performance ... […]
Optical probe deciphers data-storing potential of thin film
on May 19, 2019 at 2:23 pm
Physicists have used laser beams to gain new insights into the generation and transport of spin currents in a bilayer thin film made up of a ferromagnet and a non-magnet 1. These insights are ... […]
via Bing News