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FTTH Conference 2011 Milan WORKSHOP
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Matteo PandolfiField Applications Engineer
Connectivity & FTTx Business
MDU Cabling in ItalyAn overview
The extractable Solutions in MDU cabling
Nowadays the extractable solutions have become veryimportant in MDU cabling systems, because they bringmany advantages to the installation:
Speed and ease of the installation
Less cables to deal with
Reduced space required
High Flexibility
Future upgrade
The harsh environments A new compact Solution ConclusionsThe extractable solution
The extractable Solutions in MDU cabling
The harsh environments A new compact Solution ConclusionsThe extractable solution
The principle of extractable solutions is so easy:
Step 2On the subscriber’s floor pull
back the selected fibre module
Step 1On a higher floor cut the
selected fibre module
Optical NetworkTermination
2nd window : “extraction window”
1st window: “pick window”
Extr
actio
n Le
ngth
250 µm Optical Fiber (ITU-T G.657.A1)
900 µm LSOH coating
LSOH outer sheath materialGood thikness to accomodate the strength members
Standard Micromodule
GRP Rodsgive tensile strength to the cable
The harsh environments
Installers and Tel.Co.s find it very effective, and more and morechoose to go this way…
…pushing it to the limit when they find:A very limited space available in the Riser ShaftsA difficult path between two floorsOvercrowded Riser DuctsA lot of bends to deal withHistorical Buildings without any cable ductsVisual impact as an issue
And this is the situation you face very often in the old-countries ofEurope, not only in Italy, where for the first time a new solution isrequired.
The harsh environments A new compact Solution ConclusionsThe extractable solution
The harsh environments
A new compact Solution ConclusionsThe harsh environmentsThe extractable solution
A new compact Solution
In all those cases, moving away from the standardsolution, a new compact solution is available:
Compact Riser Cable design
Embedded Riser Cable
A new compact Solution ConclusionsThe harsh environmentsThe extractable solution
250 µm Optical Fibre(ITU-T G.657.A1)
Yarn reinforced peripheral
900 µm LSOH coating
LSOH outer sheath materialJust a thin skin to hold the fibre modules
Enhanced Micromodule
A new compact Solution
Compact connectivity
Embedded Breakout Unit
Embedded Fusion In-Line Splice protection
Secondary Manifold
ConclusionsThe extractable solution A new compact SolutionThe harsh environments
A new compact Solution
New specific Installation Tools
Embedded Stripping Tool
Embedded Crimp Set
ConclusionsThe extractable solution A new compact SolutionThe harsh environments
A new compact SolutionThis allows you to cope with the most difficult
environments:
ConclusionsThe extractable solution A new compact SolutionThe harsh environments
A new compact Solution
ConclusionsThe extractable solution A new compact SolutionThe harsh environments
Pros:Larger number of fibresMore room insideNo worries during installationGood stiffness, can be pushedGood extraction lengthAvoids twisting of micromodulesOptical fibres not stressedCan stand a little crushingDoesn’t contain aramidCost effective...
Cons:Larger diameterCan’t deal with extreme bendingMore space needed for window cuts
Conclusions
ConclusionsThe extractable solution A new compact SolutionThe hard environments
Pros:Smaller diameterBetter flexibility for extreme bendingLess space needed for window cuts
Cons:Less fibres insideLess room insideBe careful during installationToo weak to be pushedShort extraction lengthModules can be highly twistedOptical fibres can be very stressedDoesn’t stand any crushingContains aramidMore expensive...
For the time being, extractable solutions represent themost effective way to create the fibre network in theMDU. Systems are new babies, which can have a lot offurure improvements.
For internal cabling, when enough space is available forthe installation, the standard solution has to be chosendue to its advantages in terms of speed, ease ofinstallation, protection to the fibres.
In case of very challenging environments, a compactand embedded solution is available, providing that yourenounce some of the standard solution advantages.
Conclusions
ConclusionsThe extractable solution A new compact SolutionThe hard environments
Thank you all for your kind attention!
Matteo PandolfiPrysmian Cavi e Sistemi Telecom
Connectivity and FTTx - Field Applications EngineerLightspeed is our limit
T : +39 02 6449.50854M : +39 335 1602554F : +39 02 66132.458@ : carlomatteo.pandolfi@prysmian.com
A compact Solution ConclusionsThe hard environmentsThe extractable solution
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