<

08-Sep-2014

Major step toward photonic circuits

Fibre optics transmit data at ultra-high-speed.

The invention of fibre optics revolutionized the way we share information, allowing us to transmit data at volumes and speeds we’d only previously dreamed of. Now, electrical engineering researchers at the University of Alberta are breaking another barrier, designing nano-optical cables small enough to replace the copper wiring on computer chips.

This could result in radical increases in computing speeds and reduced energy use by electronic devices.

“We’re already transmitting data from continent to continent using fibre optics, but the killer application is using this inside chips for interconnects—that is the Holy Grail,” says Zubin Jacob, an electrical engineering professor leading the research. “What we’ve done is come up with a fundamentally new way of confining light to the nano scale.”

At present, the diameter of fibre optic cables is limited to about one thousandth of a millimetre. Cables designed by graduate student Saman Jahani and Jacob are 10 times smaller—small enough to replace copper wiring still used on computer chips. (To put that into perspective, a dime is about one millimetre thick.)

Capturing all the light, without the heat
Jahani and Jacob have used metamaterials to redefine the textbook phenomenon of total internal reflection, discovered 400 years ago by German scientist Johannes Kepler while working on telescopes.

Researchers around the world have been stymied in their efforts to develop effective fibre optics at smaller sizes. One popular solution has been reflective metallic claddings that keep light waves inside the cables. But the biggest hurdle is increased temperatures: metal causes problems after a certain point.

“If you use metal, a lot of light gets converted to heat. That has been the major stumbling block. Light gets converted to heat and the information literally burns up—it’s lost.”

Jacob and Jahani have designed a new, non-metallic metamaterial that enables them to “compress” and contain light waves in the smaller cables without creating heat, slowing the signal or losing data. Jacob and Jahani are now building the metamaterials on a silicon chip to outperform current light confining strategies used in industry.

More information:
uofa.ualberta.ca

 
 
 
 
  • LASER World of PHOTONICS
 
Highlights
active active active
for exhibitors
for visitors
for the press
That was LASER World of PHOTONICS

That was LASER World of PHOTONICS 2017

Full halls, constructive discussions and positive feedback. Experience the highlights of the 2017 exhibition all over again.

That was LASER World of PHOTONICS

That was LASER World of PHOTONICS 2017

Full halls, constructive discussions and positive feedback. Experience the highlights of the 2017 exhibition all over again.

That was LASER World of PHOTONICS 2017

Full halls, constructive discussions and positive feedback. Experience the highlights of the 2017 exhibition all over again.

Well informed—365 days a year

Well informed—365 days a year

Whether it comes to fair-related news, industry knowledge or background information: We always keep you up to date—all year long and on all channels.

Well informed—365 days a year

Well informed—365 days a year

Whether it comes to fair-related news, industry knowledge or background information: We always keep you up to date—all year long and on all channels.

Well informed—365 days a year

Whether it comes to fair-related news, industry knowledge or background information: We always keep you up to date—all year long and on all channels.

What the world’s leading trade fair has to offer

What the world’s leading trade fair has to offer

What is the focus? Who participates? How do you profit? Here you find the most important information about the world’s leading trade fair for photonics.

What the world’s leading trade fair has to offer

What the world’s leading trade fair has to offer

What is the focus? Who participates? How do you profit? Here you find the most important information about the world’s leading trade fair for photonics.

What the world’s leading trade fair has to offer

What is the focus? Who participates? How do you profit? Here you find the most important information about the world’s leading trade fair for photonics.