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
- Increasing Investments Are Furthering the Global Silicon Photonics Market at a CAGR of 19.70% by 2027 on April 18, 2019 at 9:07 am
The Silicon Photonics market report provides data tables, includes charts and graphs for visual ... expected to grow at a 10.12% CAGR during the forecast period 2019-2027. Optical Transport Network ... […]
- Cisco, Huawei, ZTE Part of ‘Successful’ 5G Transport Tests on April 18, 2019 at 7:58 am
The tests placed a strong focus on the 5G readiness of multi-vendor transport networks ... vendors included China-based suppliers Huawei and ZTE as well as ADVA Optical Networking, Arista Networks, ... […]
- DataBank Opens Third Data Center In Fast-Growing Kansas City Region on April 16, 2019 at 7:44 am
The Dallas-based data center provider said the new KC3 data center completes a high-speed optical metro transport ring in a region with growing demands for connectivity. DataBank installed private ... […]
- Rambus Announces Tapeout and Availability of 112G Long Reach SerDes PHY on Leading-edge 7nm Node for High-Performance Communications and Data Centers on April 16, 2019 at 6:48 am
--(BUSINESS WIRE)--Apr 16, 2019--Today Rambus Inc. (NASDAQ: RMBS) announced its newest portfolio solution of 112G Long Reach (LR) SerDes PHY on a leading-edge 7nm process node for next-generation ... […]
- ADVA Optical Networking (ADVOF) Scheduled to Post Earnings on Thursday on April 15, 2019 at 11:08 pm
and sells optical and Ethernet-based networking solutions to deliver data, storage, voice, and video services worldwide. It offers scalable optical transport solutions, such as FSP 3000 AgileConnect, ... […]
- Fluvius upgrades cable network with Teleste’s optical nodes in Belgium on April 12, 2019 at 4:35 am
Teleste’s AC8810 optical nodes provide Fluvius with fibre-level data transmission capacity ... secure your safety in public places and guide your use of public transport. With solid industry ... […]
- Spin Lasers Could Transfer Data Faster, Use Less Energy than Conventional Lasers on April 11, 2019 at 9:23 am
The oscillation alone did not transport any information. For data transfer, the polarization had to be modulated ... outline an option for the next generation of low-energy, ultrafast optical ... […]
- Proximus set to achieve 10-fold increase in IP transport network capacity on April 9, 2019 at 4:45 am
Telecom engineers at Proximus have also migrated 30 percent of 50,000 optical fibres in seven months. Proximus’s TITAN project (Terabit IP Transport and Aggregation Network) will allow the Proximus ... […]
- Spin Lasers Facilitate Rapid Data Transfer on April 8, 2019 at 1:51 pm
Engineers at Ruhr-Universität Bochum have developed a novel concept for rapid data transfer via optical fibre cables ... The oscillation alone does not transport any information; for this purpose, the ... […]
- Sterlite Tech to create optical transport controller for Voyager and Cassini platforms in collaboration with the Telecom Infra Project on April 8, 2019 at 9:36 am
The collaboration will see the creation of an optical transport controller to manage and control Voyager and Cassini platforms developed by TIP members… Sterlite Tech [BSE: 532374, NSE: STRTECH], a ... […]
via Bing News