This page contains a Flash digital edition of a book.
FEATURE OPTICAL FIBRE


With almost five billion connected devices


in use in 2015, the pressure on network fibre capacity is only intensifying and, despite the benefits micro cables have brought to the most strained areas of the network, there is already a need for even smaller, even lighter cables with even higher fibre counts. With an eye on the future, some manufacturers have introduced high-density micro cables with fibre counts up to 288 fibres that are up to 60 per cent smaller and 70 per cent lighter than traditional loose tube cables, and up to 20 per cent smaller than standard micro cables. High-density micro cables use 24 fibres per


buffer tube rather than 12. Consequently, fewer tubes are needed to achieve a given fibre count; meaning an operator can choose to maintain cable diameter and increase fibre count, or maintain fibre count and reduce cable diameter, whilst increasing fibre density in both instances. With a typical diameter of approximately 8.0mm, a 216-fibre high-density micro cable offers 50 per cent more fibres in the same space as a 144-fibre standard micro- cable, which translates to 1512 fibres in a seven-way Ø 12/10mm microduct bundle, delivering 425 per cent more fibres than a


3RD ANNUAL CO-LOCATED WITH:


@fibresystemsmag | www.fibre-systems.com


Figure 2: A standard duct can hold 288 fibres in a loose tube cable design, while the same amount of space with seven-way microduct bundles using standard and high-density micro-cables can hold 1008 and 1512 fibres, respectively


288-fibre loose tube cable in a Ø 40/33mm sub-duct (Figure 2). Previously, high-density micro cables have


always featured G.657.A1-rated 200µm fibres for increased macrobend resistance, as necessitated by such tight packing densities. Yet the adoption of such fibres has been deferred by many operators due to worries over splice compatibility with legacy G.652 fibres which have a mode-field diameter (MFD) of 9.2µm versus 8.7µm for G.657 fibres. However, Corning’s new high-density MiniXtend HD cables were developed in conjunction with the latest generation of 200µm fibres, Corning


SMF-28 Ultra 200 fibre, which offers a completely unique combination of low loss, 33 per cent better macrobend performance than a G.657.A1 fibre and a 9.2µm MFD in a single, smaller fibre package. Tese cables offer smaller diameter measurements and greater fibre density than any comparable product in the industry, as well as total compatibility with legacy optical fibre cables.


Managing excess fibre in central offices A parallel development to the increase in the density of optical fibre cables is the need to optimise the density of fibre management


NORTH AMERICA


300+ ATTENDEES


6-7 OCTOBER 2015 CROWNE PLAZA, DALLAS


NORTH AMERICA’S LEADING EVENT FOR CARRIERS, OPTICAL SYSTEM & COMPONENT VENDORS


EXCLUSIVE VIP NETWORKING SERVICE


NETWORK WITH REAL DECISION MAKERS!


GOLD SPONSOR: SILVER SPONSORS:


THE SHOW WAS GREAT. LOTS OF INTERESTING PRESENTATIONS.


AMAZING NETWORKING ACTIVITIES. LOVED THE


SPEED NETWORKING.” Gershom Vavenberg, Allot Communications


PANEL PARTNER:


50+ VISIONARY


SPEAKERS WWW.USA.NEXTGENERATIONOPTICAL.COM


Produced and researched by:


65% CARRIER


ATTENDANCE


FoFREE


r carriers


Page 1  |  Page 2  |  Page 3  |  Page 4  |  Page 5  |  Page 6  |  Page 7  |  Page 8  |  Page 9  |  Page 10  |  Page 11  |  Page 12  |  Page 13  |  Page 14  |  Page 15  |  Page 16  |  Page 17  |  Page 18  |  Page 19  |  Page 20  |  Page 21  |  Page 22  |  Page 23  |  Page 24  |  Page 25  |  Page 26  |  Page 27  |  Page 28  |  Page 29  |  Page 30  |  Page 31  |  Page 32  |  Page 33  |  Page 34  |  Page 35  |  Page 36  |  Page 37  |  Page 38  |  Page 39  |  Page 40