Feeds

Soliton makes its way across silicon in CUDOS experiment

'Intricate' research paves way to glass-free on-chip interconnect

Beginner's guide to SSL certificates

On-chip photonic interconnects are a step closer, with a successful demonstration of soliton compression in silicon from Australia's CUDOS research centre.

In a Nature Communications report, a team from CUDOS demonstrates that solitons can be both observed and harnessed in silicon-based photonic systems. Solitons in fibre optic systems, for example, have good stability over long distances.

CUDOS director Professor Ben Eggleton told The Register that although solitons are “well established and well exploited” in many fields, solitons on silicon pose particular problems. “Silicon causes non-linearity, which allows the soliton to not disperse,” he explained.

However, light interacts with silicon causing the release of electrons – and those electrons absorb light. So a challenge in making practical use of solitons in silicon-based photonics is to have them propagate across silicon without changing shape.

The second fundamental aspect of the research, Professor Eggleton said, is that the research team, led by Andrea Blanco-Redondo and Dr Chad Husko, were able to shape the light pulses in silicon.

The CUDOS silicon waveguide

The silicon waveguide CUDOS developed

to demonstrate soliton compression

“Compressing the pulse is the foundation of all photonic communication,” he said, because that enables systems in which different pulse shapes can represent ones and zeroes.

“This experiment is laying down the foundation, by elucidating the non-linear dynamics” of soliton behaviour in silicon systems, he said, describing the work as “exquisite and intricate”.

While the CUDOS experiment only worked at a few hundred bits per second, Eggleton said, the picosecond pulse width the researchers worked with means that communication rates of 100 Gbps are feasible.

On-chip photonic interconnect is keenly researched, because using light for the interconnect reduces the amount of heat a chip has to dissipate.

The CUDOS work has been published in Nature Communications. The full paper is here. ®

Top 5 reasons to deploy VMware with Tegile

More from The Register

next story
Antarctic ice THICKER than first feared – penguin-bot boffins
Robo-sub scans freezing waters, rocks warming models
I'll be back (and forward): Hollywood's time travel tribulations
Quick, call the Time Cops to sort out this paradox!
Your PHONE is slowly KILLING YOU
Doctors find new Digitillnesses - 'text neck' and 'telepressure'
Reuse the Force, Luke: SpaceX's Elon Musk reveals X-WING designs
And a floating carrier for recyclable rockets
Britain's HUMAN DNA-strewing Moon mission rakes in £200k
3 days, and Kickstarter moves lander 37% nearer takeoff
Bond villains lament as Wicked Lasers withdraw death ray
Want to arm that shark? Better get in there quick
prev story

Whitepapers

Driving business with continuous operational intelligence
Introducing an innovative approach offered by ExtraHop for producing continuous operational intelligence.
Why CIOs should rethink endpoint data protection in the age of mobility
Assessing trends in data protection, specifically with respect to mobile devices, BYOD, and remote employees.
Forging a new future with identity relationship management
Learn about ForgeRock's next generation IRM platform and how it is designed to empower CEOS's and enterprises to engage with consumers.
Reg Reader Research: SaaS based Email and Office Productivity Tools
Read this Reg reader report which provides advice and guidance for SMBs towards the use of SaaS based email and Office productivity tools.
Mitigating web security risk with SSL certificates
Web-based systems are essential tools for running business processes and delivering services to customers.