Graphene prototype modulator shown working at 10 Gigabit

• Imec's graphene electro-absorption modulator works at 10 Gigabit-per-second
• The modulator is small and has be shown to be thermally stable
• Much work is required to develop the modulator commercially

Cross-section of the graphene electro-absorption modulator. The imec work was first detailed in a paper at the IEDM conference held in December 2014 in San Francisco. Source: imec

Imec has demonstrated an optical modulator using graphene operating at up to 10 Gigabit. The Belgium nano-electronics centre is exploring graphene - carbon atoms linked in a 2D sheet - as part of its silicon photonics research programme investigating next-generation optical interconnect. Chinese vendor Huawei joined imec's programme late last year.

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Nuage uses SDN to aid enterprise connectivity needs

Simplifying the connectivity services enterprises require for their remote offices is the goal of Nuage Networks's recently launched Virtualised Network Services (VNS). The Alcatel-Lucent spin-in has expanding the capabilities of its software-defined networking (SDN) product to address applications beyond the data centre.

"Across the WAN and out to the branch, the context is increasingly complicated, with the need to deliver legacy and cloud applications to users - and sometimes customers - that are increasingly mobile, spanning several networks," says Brad Casemore, research director, data centre networks at IDC. These networks can include MPLS, Metro Ethernet, broadband and 3G and 4G wireless.

The data centre is a great microcosm of the network - Houman Modarres

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Ciena offers enterprises vNF pick and choose

Ciena, working with partners, has developed a platform for service providers to offer enterprises network functions they can select and configure with the click of a button.

Dubbed Agility Matrix, the product enables enterprises to choose their IT and connectivity services using software running on servers. It also promises to benefit service providers' revenues, enabling more adventurous service offerings due to the flexibility and new business models the virtual network functions (vNFs) enable. Currently, managed services require specialist equipment and on-site engineering visits for their set-up and management, while the contracts tend to be lengthy and inflexible.

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Huawei joins imec to research silicon photonics

Huawei has joined imec, the Belgium nano-electronics research centre, to develop optical interconnect using silicon photonics technology. The strategic agreement follows Huawei's 2013 acquisition of former imec silicon photonics spin-off, Caliopa.

Source: Gazettabyte

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Mobile fronthaul: A Q&A with LightCounting's John Lively

LightCounting Market Research' s report finds that mobile fronthaul networks will use over 14 million optical transceivers in 2014, resulting in a market valued at US $530 million. This is roughly the size to the FTTX market. However, unlike FTTX, sales of fronthaul transceivers will nearly double in the next five years, to exceed $900 million. A Q&A with LightCounting's principal analyst, John Lively.

Q. What is mobile fronthaul?

There is a simple explanation for mobile front-haul but that belies how complicated it is.

The equipment manufacturers got together about 10 years ago and came up with the idea to separate the functionality within a base station. The idea is that if you separate the functionality into two parts, you can move some of it to the tower and thereby reduce the equipment, power and space needed in the hut below. That is the distributed base station.

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Books in 2014 - Part 2

More book recommendations, from Infonetics Research's Andrew Schmitt and ADVA Optical Networking's Ulrich Kohn.

Andrew Schmitt, principal analyst for carrier transport networking at Infonetics Research

It has been a bit of a thin year for me. And what I’ve read is a little outside the job. It seems like with all of the new media at hand I make less time for long-form consumption.

My wife is a big rower and I bought The Boys in the Boat: Nine Americans and their epic quest for gold at the 1936 Berlin Olympics by Daniel James Brown for her. But then someone recommended it to me and I started reading it before she could. It is a fantastic underdog story about the University of Washington crew team and their road to the Berlin Olympics. It has lots of colour of what 1920's and 1930's America was like and it does a good job of conveying the subtleties of the sport. The central character has everything in life stacked against him but relies on a bottomless ability to suffer both in and out of the boat to grind his way towards a goal. There is so much vivid detail about the personalities and the races that I am slightly skeptical about whether it was all accurate but a fantastic read nonetheless.

Probably my favourite book of 2014 was Zero to One: Notes on startups, or how to build the future by Peter Thiel and Blake Masters, and I’m sure I won’t be the only one to mention it. It is like the anti-business book, blowing up all of the conventional thoughts surrounding start-ups and makes for a refreshing read. Excellent signal-to-noise ratio. I suppose Blake Masters deserves more credit than he has received for canning the thoughts of Peter Thiel in a very readable way.

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OpenCL and the reconfigurable data centre

Part 3: General purpose data centres

Xilinx's adoption of the Open Computing Language (OpenCL) as part of its SDAccel development tool is important, not just for FPGAs but also for the computational capabilities of the data centre.

The FPGA vendor is promoting its chips as server co-processors to tackle complex processing tasks such as image searches, encryption, and custom computation.   

Search-engine specialists such as Baidu and Microsoft have seen a greater amount of traffic for image and video searches in the last two years, says Loring Wirbel, senior analyst at market research firm, The Linley Group: "All of a sudden they are seeing that these accelerator cards as being necessary for general-purpose data centres."

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