Fibre Systems Summer 2015

FEATURE

Long-distance vision

Often attention is focused on the penetration of fibre closer to the subscriber; however, it is important to not lose sight of how the global demand for data-rich applications also impacts further upstream in the long-haul section of the network. Links between cities must support the ever-increasing volume of data traffic to ensure that transmission bottlenecks do not occur. 

Increases in per-channel data rates up to 400G are grabbing headlines and fibre makers must continue to innovate to allow such speeds to be installed efficiently.

FEATURE

The problem with packaging

At a time when internet giants are demanding faster and cheaper optical networking products for their data centres, silicon photonics has yet to deliver. At this year’s Optical Fiber Conference (OFC) in Los Angeles, Facebook network architect, Yuval Bachar, again called for optical links priced at $1 per gigabit running over singlemode fibre. Yet commercial development of silicon photonics products isn’t progressing fast enough to keep up with the industry’s desires.

FEATURE

Blurred boundaries

Metro, regional, long-haul, metro-access, metro-aggregation, metro-core, ultra-long-haul, data centre interconnect… whatever these terms mean to you, I can almost guarantee that we would disagree somewhere in our views of exactly what these terms mean and where specifically these products are used in optical networks. Our expectations of exactly what distances these systems would cover and the functionality that each should have would probably also vary considerably. 

FEATURE

Good grounding

Last year, AFL celebrated its 30th birthday. The company has come a long way since 1984 when Alcoa, formerly the Aluminum Company of America, joined forces with Fujikura of Japan to form Alcoa Fujikura Ltd., better known today as AFL.

Feature

As data demand ramps ever higher, researchers are looking to innovative amplifier designs to help transport a broader light spectrum through optical fibres, finds Andy Extance

Feature

Duncan Ellis shares his views about the increased focus on automation from network operators, and how the physical layer has so far stubbornly resisted the move

Feature

Switching off copper networks where fibre has been deployed is the end game, so why are so few operators doing it, wonders Pauline Rigby

Feature

With demand for fibre to the premises increasing, Keely Portway looks at the role training plays in ensuring installation skills remain available to meet this growing demand

Analysis and opinion