Tài liệu ADC KRONE - Guide - FTTP - Outside Plant Architecture ppt

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Fiber-to-the-Premise: Outside Plant Architecture

As fiber is deployed deeper into the network to enable broadband service
delivery, the outside plant is undergoing significant change. New fiber-to-the-
premises technologies require a new approach to the outside plant. There is more
fiber to manage; there is greater need for physical layer access; and the network
must be designed for future expansion and upgrades. Successful FTTP
deployment requires a new approach, a new understanding.

As a proven partner and network infrastructure solutions leader, ADC delivers
real-world expertise and measurable success. ADC OmniReach™ FTTP
Infrastructure Solutions are the industry’s first platforms designed from the
ground up to meet the unique requirements of FTTP networks. By building
network infrastructures upon ADC OmniReach solutions, service providers
nationwide are accelerating deployment and maximizing operational efficiency
from the central office to the outside plant.

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Alliance
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1x32 Optical

Splitter
Splitter Chassis
Feeder
OSP Cable
From C/O
Factory Terminated
Connectors on FDH
Drop Cable
Factory Terminated
Pigtails
Splice
Tray
Splitter Connector
Parking Lot
Distribution
Cable
Factory Connectors
Splitter Module
Factory Connectors
Splitter Module
Optional
Splice
Tray
Alliance
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1x32 Optical
Splitter
Splitter Chassis
Feeder
OSP Cable
From C/O
Factory Terminated
Connectors on FDH
Drop Cable
Factory Terminated
Pigtails
Splice
Tray
Splitter Connector
Parking Lot
Distribution
Cable
Factory Connectors
Splitter Module
Factory Connectors
Splitter Module
Optional
Splice
Tray
Fiber Distribution Terminal (FDT)

FDT Overview
One of the key components of an FTTP network is the Fiber Distribution Terminal
(FDT) where all of the fiber from the central office is split and distributed to the
end users. ADC has leveraged its recognized expertise in developing quality fiber
infrastructure solutions for the central office and has brought that expertise to the
outside plant environment, with our FDTs. ADC’s FDTs have the capability to
serve up to 1,152 homes and enable high OLT efficiency, and physical layer
access to fibers within the feeder and distribution network.

Internal FDT Diagram

Our FDT’s incorporate four time-tested elements that have long impacted
reliability, flexibility and operational costs within the central office environment:

• Bend radius protection - Fibers bent beyond the specified minimum
bend diameters can fracture, causing service failures and increasing
network operations costs. Adding new fibers can easily bend the bottom
fiber beyond its minimum bend radius and suddenly cause an increased
level of attenuation and a shorter service life. By emphasizing fiber cable
management, ADC provides bend radius protection at all points where a
fiber cable is making a bend. This practice increases long-term reliability of


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the network, reduces network down time, and ultimately reduces the
operational cost of the network.

• Intuitive cable routing – ADC’s cable routing provides a very clear path
for the technician to route particular cable, leaving fewer options and
virtually eliminating the chance for human error. In addition, having
defined routing paths makes accessing individual fibers much easier,
quicker and safer, thus reducing the time required for reconfigurations.
Intuitive cable routing paths also reduce the training time required for
technicians and make patch cord routing and rerouting a simpler
operation.

• Easy fiber/connector access – ADC’s FDT provides the ability to store
unmated connector pairs in a “parking lot”. This parking lot is a key factor
in maintaining connector cleanliness. Each connector sent with the
cabinet, or in our splitter packages, will have a dust cap installed just after
final testing, cleaning and end-face inspection. These clean connectors are
then placed in 8-pack “parking lots” for simple installation in the cabinet.
Additionally, ADC places individually accessible connector adapters on the
front of each panel in the FDT. The recommended practice of scoping
every fiber connector, as it is cleaned, can be both cumbersome and
expensive. This is alleviated with the simple and quick access ability to
each connector adapter. Technicians have much easier access for cleaning
and turn-up operations, thus ensuring best optical performance. Superior
fiber cable accessibility also ensures that any fiber can be installed or
removed without inducing a macrobend or otherwise damaging an
adjacent fiber.

• Physical protection – Physically protecting every fiber and connector
from inadvertent damage is a major concern in cable management. ADC’s
cabinet design ensures maximum protection for every optical cable and
component. Fibers that are routed between pieces of equipment without

proper protection are very susceptible to damage. ADC’s fiber cable
management system ensures the physical protection of every fiber and
component.


FDT Features and Benefits
Feature Benefit
Removable retainers
Allow cleaning of single connector without
disturbing adjacent circuits
Integrated slack storage spools
Allow storage of excess fiber while providing
positive 1.5" bend radius control
Angled bulkhead panel
Provides easy hand access to connectors and
prevents 90 degree bends on connector boots
Small size
Minimal protrusion from ground (less than 48
inches) help with right-of-way concerns
Condensation foam and cross-
ventilation
Control moisture build-up in cabinet
Detailed routing information
Information at point of use assures accurate
and consistent cable routing, and speeds
service turn-up or routine maintenance
All splitter connectors are preloaded
into parking lot
Allows for dust cap to remain on connector
from factory, limiting field cleaning time

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UPC Polish
Light is reflected straight
back down the core
Return Loss = 57dB
Adequate for most applications
UPC Polish
Light is reflected straight
back down the core
Return Loss = 57dB
Adequate for most applications
8
o
Angled Polish
Light is reflected into the
cladding
Return Loss = 60dB
(.0001% of power reflected back)
Ideal for CATV applications
8
o

Light is reflected into the
cladding
Return Loss = 60dB
(.0001% of power reflected back)
Ideal for CATV applications
UPC Polish
Light is reflected straight
back down the core
Return Loss = 57dB
Adequate for most applications
UPC Polish
Light is reflected straight
back down the core
Return Loss = 57dB
Adequate for most applications
UPC Polish
Light is reflected straight
back down the core
Return Loss = 57dB
Adequate for most applications
UPC Polish
Light is reflected straight
back down the core
Return Loss = 57dB
Adequate for most applications
8
o
Angled Polish
Light is reflected into the
cladding

Return Loss = 60dB
(.0001% of power reflected back)
Ideal for CATV applications
8
o
Light is reflected into the
cladding
Return Loss = 60dB
(.0001% of power reflected back)
Ideal for CATV applications
8
o
Angled Polish
Light is reflected into the
cladding
Return Loss = 60dB
(.0001% of power reflected back)
Ideal for CATV applications
8
o
Light is reflected into the
cladding
Return Loss = 60dB
(.0001% of power reflected back)
Ideal for CATV applications


Connector and Fiber Connectorization Overview

ADC fiber optic connectors can help Telefonica minimize operational expenses and

maximize network performance. All components (Central Office Fiber Distribution
Frames, OSP Fiber Distribution Terminal, OSP Fiber Access Terminal and Drop
Cables) of ADC ’s Fiber-to-the-Premise fiber infrastructure utilize fiber optic
connectors, which make them a very important component in the end-to-end
solution.
ADC Ultra Polished SC and Angle Polished SC connectors have been tested and
comply with GR-326 Optical Connector Performance specifications. This ensures
CUSTOMER NAME is receiving reliable and quality connectors.
To ensure our quality and reliability, ADC test 100% of its connectors, which
includes a visual inspection, optical data (insertion loss/return loss) and endface
geometry (apex offset, fiber recession and radius of curvature).



As Telefonica outlines it’s plan for FTTP, it is important to consider the FTTP
architecture differently than the traditional copper environment because of the
fresh, new network, high bandwidth services riding glass and differences in plant
characteristics. Furthermore, it is also just as important to understand the key
advantages that the copper network has afforded carriers for many years and
these same network architectural principles in designing a profitable FTTP
network.

The cost of network operation and the ability to provide high bandwidth services
extend far beyond the equipment and installation expenditures. Through our
experience, we have found that Carriers across the country do not underestimate
the need for fiber access in a FTTP network operation. Through connectorization,
fiber access provides carriers with:

• Faster turn-up of high revenue generating services
• Ability to more efficiently test, troubleshoot and isolate network problems

• Quick and easy reconfiguration
• Simplified training for technicians
•
Reduced labor costs during network implementation and future network
maintenance


In our world of high revenue-generating services, it is important that Telefonica
customers experience minimal down time in troubleshooting isolation. ADC has
completed a number of studies that show the costs associated with service
outages as outlined in this proposal. It is clear that without fiber connector
access for troubleshooting, end-customers can experiences outages in days
rather than hours.


Fiber Connectorization


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Factory connectorization minimizes installation expenses and maximizes network
performance by eliminating additional labor costs and termination gaffes in the
field. ADC understands the complexities of its panels and the optimal methods for
termination. Pre-connectorized panels and cables are terminated correctly the
first time, eliminating "do-it-again" costs.

Reliability, flexibility and quality – deployed faster and less expensive. The merits
of factory connectorization have never been clearer.

By incorporating vertically integrated manufacturing processes, ADC can expedite
delivery of customized terminated panels at lower costs, with one catalog
number, from one source. Vertical integration enables Telefonica to custom-tailor
terminated panels, splitters and cables to suit the unique requirements of specific
applications. And because ADC controls every step in the manufacturing process,
we can ensure you receive the right products, at the right time.

ADC pre-connectorization process offers several additional advantages:

• All connectors are polished and terminated in a clean environment and
inspected by a quality control program
• Test results are documented and provided with each assembly
• All expendables, labor and "do-it-again" costs are incurred by ADC







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Fiber Access Terminals

Fiber Access Terminal/Pedestal Overview
ADC Fiber Access Terminals provide a robust, user friendly, and cost effective
platform for delivering fiber optic drops in FTTP deployments, for both single-
family homes as well as for multi dwelling units. ADC Fiber Access Terminals
provide physical protection, long-life reliability, superior fiber management and an
aesthetically appealing appearance.

ADC pedestal offering adds two critical differentiators from that of our
competitor’s pedestals; splicing capabilities and slack storage within the pedestal.
With the ability to splice and store fibers within the pedestal, it eliminates the
need for a separate enclosure and/or handhole, thus saving on initial capital
expenditures. In addition, ADC pedestal offering provides Telefonica with
increased operational efficiencies by allowing easy access to splices and
decreased restoration time.

The dome-style pedestals provide a continuous barrier to water and rodent
intrusion, and use the bell-jar effect to provide flood protection up to NEMA 6
standards. To achieve long-term flexibility and reliability, the fiber management
inside our Access Terminals ensure proper bend radius.

Fiber Access Terminal Mechanical Features
Made of robust stainless steel; will not rust,
unlike traditional pedestals

Square design provides efficient use of
space

Domed cover provides flood-proof
protection using the bell-jar effect

Split base allows easy installation of fiber

Grounding for armored cables, copper
equipment, towable conduit

Separate secure compartment for splicing
access

Exterior drop chamber allows easy addition
of fiber drops

Provides fiber bend radius protection

Uses standard Bellcore 216B tools

Meets GR-13 and NEMA 6 requirements






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Alliance
Distribution
OSP Cable
to next FAT
Factory Terminated
Connectors on Drop Cable
Splice
Tray
Fiber Access Terminal
Express Distribution
Cable
Factory Connectors
Drop Pigtails
Distribution
OSP Cable
From FDH
Potential splitter
location
Alliance
Distribution
OSP Cable
to next FAT
Factory Terminated
Connectors on Drop Cable
Splice
Tray
Fiber Access Terminal
Express Distribution

Cable
Factory Connectors
Drop Pigtails
Distribution
OSP Cable
From FDH
Potential splitter
location

















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Drop Cable


Drop Cable Overview
ADC is offering GR-20 compliant drop cables, pigtailed and terminated with ADC
Angle Polished SC Connectors (with anti-ferrule rotation features). ADC drop
cable offering is available for buried and aerial applications and meets NESC
requirements for cable attachment to residential homes. By implementing ADC
drop cable Telefonica can rest assure that our drop cable is rugged enough to
endure the toughest environments. ADC Drop Cable has been tested to meet GR-
20 and GR-409 specifications.

ADC drop cables come in simplex or duplex breakouts and can be terminated with
ultra or angle polished SC, LC and LX.5
®

connectors.

Buried Fiber Optic Drop Cable
with Dielectric Sheath


Aerial Fiber Optic Drop Cable
with Stranded Messenger