The capacity limits facing optical networking

Ever wondered just how close systems vendors are in approaching the limits of fibre capacity in optical networks? Kim Roberts, senior director coherent systems at Ciena, adds some mathematical rigour with his explanation of Shannon's bound, from a workshop he gave at the recent Layer123's Terabit Optical and Data Networking conference held in Cannes. 

Part 1 Shannon's bound

 Source: Ciena

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OFC/NFOEC 2012: Some of the exhibition highlights

A round-up of some of the main announcements and demonstrations at the recent OFC/NFOEC 2012 exhibition and conference.

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Optical components enter an era of technology-pull

Gazettabyte asked ADVA Optical Networking, Ciena, Cisco Systems and Ovum about their impressions following the recent OFC/NFOEC 2012 exhibition and conference.

OFC/NFOEC reflections: Part 2 

"As the economy continues to navigate its way through yet another very difficult period, it was good to see so many companies innovating and introducing solutions."

Massimo Prati, Cisco Systems

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ZTE takes PON optical line terminal lead

ZTE shipped 1.8 million passive optical network (PON) optical line terminals (OLTs) in 2011 to become the leading supplier with 41 percent of the global market, according to Ovum. 

"ZTE is co-operating with some Tier 1 operators in Europe and the US for 10GEPON and XGPON1 testing"

Song Shi Jie, ZTE

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Huawei's novel Petabit switch

The Chinese equipment maker showcased a prototype optical switch at this year's OFC/NFOEC that can scale to 10 Petabit. 

"Although the numbers [400,000 lasers] appear quite staggering, they point to a need for photonic integration"

Reg Wilcox, Huawei

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OFC/NFOEC 2012 industry reflections - Part 1

The recent OFC/NFOEC show, held in Los Angeles, had a strong vendor presence. Gazettabyte spoke with Infinera's Dave Welch, chief strategy officer and executive vice president, about his impressions of the show, capacity challenges facing the industry, and the importance of the company's photonic integrated circuit technology in light of recent competitor announcements.

OFC/NFOEC reflections: Part 1 

"I need as much fibre capacity as I can get, but I also need reach" 

Dave Welch, Infinera

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Dan Sadot on coherent's role in the metro and the data centre

Gazettabyte went to visit Professor Dan Sadot, academic, entrepreneur and founder of chip start-up MultiPhy, to discuss his involvement in start-ups, his research interests and why he believes coherent technology will not only play an important role in the metro but also the data centre.

"Moore's Law is probably the most dangerous enemy of optics"

Professor Dan Sadot 

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