Technology

‘BICSEL’ promises faster computing and telecom links

Researchers at the University of California San Diego have demonstrated a new type of laser that has the potential to be more compact and energy efficient than the standard vertical-cavity surface emitting lasers used in many computing and optical networking links.

The new laser is based on an unconventional physics phenomenon called ‘bound states in the continuum’ (BIC), which are resonant states. First proposed as part of quantum mechanics theory in 1929, only recently was it realised that BICs are a general wave phenomenon that could also be applied to optics.

UK researchers probe limits of coherent optical transmission

Researchers from University College London in the UK have calculated that optical systems should be capable of providing transmission capacities of up to 223Tb/s over transoceanic distances using the installed base of standard singlemode fibre – almost ten times greater capacity than systems commercially available today.

FSAN unveils roadmap to future PON standards

While service providers are still evaluating the latest generation of passive optical network technologies, the Full Service Access Network Group (FSAN) is already considering what comes next for optical fibre based access systems.

At a meeting held recently in Hangzhou, China, on 14–18 November the group received contributions from operators about their requirements and technology options for such systems, and issued an updated roadmap that has recently been agreed by the operator members.

AT&T and Colt develop API for SDN-to-SDN interoperability

AT&T and Colt Technology Services have developed an application programming interface (API) that lets SDN architectures from different network service providers work together, and used it to integrate the on-demand capabilities of their respective networks.

The partners claim that this is the first successful trial to show software-defined network (SDN) interoperability.

AT&T to trial 400 Gigabit Ethernet services in 2017

AT&T intends to be the first in the industry to demonstrate 400 Gigabit Ethernet services across its production network, and will launch trials for business customers in early 2017.

The US service provider reported that data traffic on its network grew more than 150,000 per cent between 2007 and 2015, and continues to increase. The introduction of 400GbE is a natural progression, the company says.

Openreach and Huawei combine PON technologies to reach 52.5G speeds

Openreach, BT’s local network business, and Huawei, claim to have become the first companies in Europe to show how combining multiple access technologies on the same fibre could super-charge broadband speeds for businesses and consumers in the future.

The companies showed coexistence of 40Gb/s NG-PON2, 10Gb/s XGS-PON and 2.5Gb/s GPON technologies on the same fibre, giving an aggregate capacity of 52.5Gb/s on Openreach’s network.

Nokia joins UK's pioneering smart city initiative in Bristol

Nokia has joined the Bristol Is Open initiative, becoming the first major telecoms vendor to participate in Bristol's unique living laboratory.

Bristol Is Open (BIO) encompasses the entire city, effectively transforming it into a dynamic test bed to explore how integrated technology can benefit citizens – from helping solve problems such as traffic congestion, air pollution, and assisted living for the elderly to trials of self-driving cars.

Nokia Bell Labs touts 65 terabit transoceanic transmission trial

Alcatel-Lucent Submarine Networks (ASN) and Nokia Bell Labs have achieved what they claim is a record transmission capacity of 65Tb/s over 6,600km of singlemode fibre.

An interesting point of comparison: the capacity of 65Tb/s is 13,000 times greater than the capacity that was available on the first undersea amplified transatlantic system installed in 1995.

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