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Friday
Apr292016

NeoPhotonics showcases a CFP2-ACO roadmap to 400G

NeoPhotonics has begun sampling its CFP2-ACO, a pluggable module for metro and long-haul optical transport. 

The company demonstrated the CFP2-ACO module transmitting at 100 gigabit using polarisation multiplexed, quadrature phase-shift keying (PM-QPSK) modulation at the recent OFC show. The line-side module is capable of transmitting over 1,000km and also supports PM-16QAM that doubles capacity over metro network distances.

 

Ferris LipscombThe CFP2-ACO is a Class 3 design: the control electronics for the modulator and laser reside on the board, alongside the coherent DSP-ASIC chip.

At OFC, NeoPhotonics also demonstrated single-wavelength 400-gigabit transmission using more advanced modulation and a higher symbol rate, and a short-reach 100-gigabit link for inside the data centre using 4-level pulse-amplitude modulation (PAM4) signalling. 

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Tuesday
Apr122016

The white box concept gets embraced at the optical layer

Lumentum has unveiled several optical white-box designs. To date the adoption of white boxes - pizza-box sized platforms used in large-scale data centres - has been at the electronic layer, for switching and routing applications.

 

Brandon Collings

White boxes have arisen to satisfy the data centre operators’ need for simple building-block functions in large number that they can direct themselves.  

“They [data centre operators] started using very simple white boxes - rather simple functionality, much simpler than the large router companies were providing - which they controlled themselves using software-defined networking orchestrators,” says Brandon Collings, CTO of Lumentum. 

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Monday
Apr042016

QSFP28 MicroMux expands 10 & 40 Gig faceplate capacity

  • ADVA Optical Networking's MicroMux aggregates lower rate 10 and 40 gigabit client signals in a pluggable QSFP28 module
  • ADVA is also claiming an industry first in implementing the Open Optical Line System concept that is backed by Microsoft 

The need for terabits of capacity to link Internet content providers’ mega-scale data centres has given rise to a new class of optical transport platform, known as data centre interconnect.


Source: ADVA Optical Networking

Such platforms are designed to be power efficient, compact and support a variety of client-side signal rates spanning 10, 40 and 100 gigabit. But this poses a challenge for design engineers as the front panel of such platforms can only fit so many lower-rate client-side signals. This can lead to the aggregate data fed to the platform falling short of its full line-side transport capability.

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Wednesday
Mar302016

Infinera goes multi-terabit with its latest photonic IC

In his new book, The Great Acceleration, Robert Colvile discusses how things we do are speeding up.

In 1845 it took U.S. President James Polk six months to send a message to California. Just 15 years later Abraham Lincoln's inaugural address could travel the same distance in under eight days, using the Pony Express. But the use of ponies for transcontinental communications was shortlived once the electrical telegraph took hold. [1]

The relentless progress in information transfer, enabled by chip advances and Moore's law, is taken largely for granted. Less noticed is the progress being made in integrated photonic chips, most notably by Infinera.    

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Wednesday
Mar232016

Ciena enhances its 6500 packet-optical transport family

Ciena has upgraded its 6500 family of packet-optical transport platforms with the T-series that supports higher-capacity electrical and optical switching and higher-speed line cards.

"The 6500 T-Series is a big deal as Ciena can offer two different systems depending on what the customer is looking for," says Andrew Schmitt, founder and principal analyst of market research firm, Cignal AI.

 

Helen XenosIf customers want straightforward transport and the ability to reach a number of different distances, there is the existing 6500 S-series, says Schmitt. The T-series is a system specifically for metro-regional networks that can accommodate multiple traffic types – OTN or packet.

"It has very high density for a packet-optical system and offers pay-as-you-grow with CFP2-ACO [coherent pluggable] modules," says Schmitt.

Ciena says the T-series has been developed to address new connectivity requirements service providers face. Content is being shifted to the metro to improve the quality of experience for end users and reduce capacity on backbone networks. Such user consumption of content is one factor accounting for the strong annual 40 percent growth in metro traffic.

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Monday
Mar212016

OFC 2016: 20-plus technical paper highlights

Silicon photonics, microservers, 100 gigabit PON, advanced modulation techniques, sliceable transponders, the Nonlinear Shannon Limit, space division multiplexing and 3D packaging. Just some of the topics in a wider collection of technical paper highlights at OFC 2016. 

 

To download a copy of the complete mind map, click here

Sunday
Mar202016

Daryl Inniss reflects on a career in market research 

Daryl Inniss was until recently an analyst covering optical components. In an invited piece, he reflects on the role of a market researcher and what he has learnt in his 15-year career.


Daryl Inniss 

Rocky beginnings

I jumped ship in 2001 joining RHK, a market research firm, knowing nothing about the craft. I had been a technical manager and loved research and development, but work was 500 miles from my family and the weekly commute was gruelling.

Back then, the telecom market was crashing and I believed my job was at risk. Moving to a small market research firm could hardly be described as good planning, but it turned out to be a godsend.

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