NEWS
Tags: 

Hollow fibre 'transmits data 30 per cent faster'

The USA's The Defence Advanced Research Projects Agency (DARPA) is claiming to have developed a hollow optical fibre that can transmit data 30 per cent faster than conventional broadband fibre.

DARPA says the design, which uses a hollow, air-filled core, improves performance by forcing light to travel through channels of air, instead of the glass around it.

It says the spider-web-like, hollow-core fibre is the first to demonstrate single-spatial-mode, low-loss and polarisation control, which are key properties needed for advanced military applications such as high-precision fibre-optic gyroscopes for inertial navigation.

DARPA-funded researchers led by Honeywell International developed the technology. The hollow-core fibre is the first to include three critical performance-enabling properties, DARPA says:

Single-spatial-mode: light can take only a single path, enabling higher bandwidth over longer distances;
Low-loss: light maintains intensity over longer distances; and
Polarisation control: the orientation of the light waves is fixed in the fibre, which is necessary for applications such as sensing, interferometry and secure communications.

Hollow-core fibre can also be bent and coiled while guiding light at speeds 30 percent faster than conventional fibre.

'Previous instantiations of hollow-core fibre have shown these high propagation speeds, but they weren't able to do so in combination with the properties that make it useful for military applications,' said Josh Conway, DARPA program manager.

'The real breakthrough with COUGAR fibre is that it can achieve a single-spatial-mode, maintain polarisation and provide low loss, all while keeping more than 99 percent of the optical beam in the air.'

Twitter icon
Facebook icon
Google icon
StumbleUpon icon
Digg icon
LinkedIn icon
Reddit icon
e-mail icon
Feature

Cost and compatibility can make a compelling case for pushing 100Gb/s bandwidth over a single optical channel, both as individual links and supporting 400Gb/s Ethernet, finds Andy Extance

Analysis and opinion
Analysis and opinion
Feature

Robin Mersh takes a look at how the industry is creating next-generation optical access fit for 5G

Feature

Technological advances to aid the increasing demand for bandwidth, on the path towards the terabit network, should lead to optical signals that are flexible and adaptive, like water, argues Dr Maxim Kuschnerov