Siemens develops 100Gbit/s fiber-optic receiver

Siemens researchers have designed an integrated single-chip fiber-optic receiver which could enable cheap 100Gbit/s Ethernet.

In tests over a 480km loop of fiber, the chip converted optical signals to error-free electronic data at 107Gbit/s. It will cut costs by replacing several optical receiving modules with just one, said Siemens project coordinator Dr Rainer Derksen.

Today, the signal on a fiber must be optically split into several slower signals, and each of these converted by a photodiode. Current technology also limits the capacity of each data channel on a fiber to around 40Gbit/s, according to Siemens.

The new chip, which uses silicon-germanium semiconductor technology developed by Infineon, needs only one photodiode and no optical splitters. In addition, Derksen and his team have designed the chip so no separate clock signal is needed - it derives the clock from the main signal.

Derksen added that a major challenge for the Siemens team was that high frequency signals can reflect or oscillate within a chip, so the dimensions of the circuit were critical.

He added that the chip could potentially be combined with dense wavelength division multiplexing (DWDM) to allow a fiber to carry several multiplexed 100Gbit/s channels.

Breaking the 100Gbit/s barrier is vital, as the networking industry looks beyond Gigabit and 10G Ethernet to either 40G or 100G. Siemens said that the first products based on its new chip could reach the switching centers and backbones of network operators in two to three years time.

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Bryan Betts

Techworld.com
Show Comments

Cool Tech

Toys for Boys

Family Friendly

Stocking Stuffer

SmartLens - Clip on Phone Camera Lens Set of 3

Learn more >

Christmas Gift Guide

Click for more ›

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Aysha Strobbe

Microsoft Office 365/HP Spectre x360

Microsoft Office continues to make a student’s life that little bit easier by offering reliable, easy to use, time-saving functionality, while continuing to develop new features that further enhance what is already a formidable collection of applications

Michael Hargreaves

Microsoft Office 365/Dell XPS 15 2-in-1

I’d recommend a Dell XPS 15 2-in-1 and the new Windows 10 to anyone who needs to get serious work done (before you kick back on your couch with your favourite Netflix show.)

Maryellen Rose George

Brother PT-P750W

It’s useful for office tasks as well as pragmatic labelling of equipment and storage – just don’t get too excited and label everything in sight!

Cathy Giles

Brother MFC-L8900CDW

The Brother MFC-L8900CDW is an absolute stand out. I struggle to fault it.

Luke Hill

MSI GT75 TITAN

I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Featured Content

Product Launch Showcase

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?