GPON FTTH MARKETING AND TECHNOLOGY

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GPON FTTH MARKETING AND TECHNOLOGY
Antony Pius KG S7, ECE Govt. Engg. College,
Wayanad
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Introduction

• Gigabit PON is an attractive FTTH broadband
  access network technology because it meets
  theneeds of carriers world-wide.
• GE-PON (EPON) has successfully demonstrated
  this approach and is
• being deployed in high volume in Asia.
• while the GPON standard will provide similar
  capabilities for carriers in North America.
• It includes all of the ingredients for market
  success a consumer base that is eager to adopt a
  much faster and more comprehensive set of
  high-speed
• services,
• a set of features ready to offer those services
  and an infrastructure of silicon, and system
  vendors that are capable of developing and
  deploying gigabit PON technology.

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COMPARISON OF PON WITH OTHER BROAD BAND ACCESS
TECHOLOGIES (DSL,VDSL, cable/modem)

• ADVANTAGES
• These include a long-term life expectancy of the
  fiber infrastructure,
• lower operating costs through the reduction of
  active components, support for greater distances
  between equipment nodes
• most importantly, much greater bandwidth.
• DSL-certain megabits per sec, FTTH pon 1 to
  2.5Gbps

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• Since Pon uses only passive components
• it has low power requirements
• less no of technicians
• cost savings up 40 t0 60
• Savings mainly result from lower customer
  contacts associated with service orders and
  trouble reporting, outside plant operations,
  central office operations, and network
  operations.
• It provides high bandwidth for high-speed
  Internet access, video on demand,IPTV and voice
  over IP (VoIP) .

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PON A SIMPLE VIEW

• In a PON system, a single fiber connects multiple
  customers toa single transceiver at the central
  office (CO).
• The single fiber is split, using a passive
  optical splitter, to serve up to 32customers.
• Not only does PON reduce the amount of fiber
  required, but a single transceiver serves
  multiple customers instead of requiring one per
  customer.

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PON Network Splits Single Fiber Link Into
Individual Links to Subscribers
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The FTTH Access Network OLTs In The Central
Office, ONUs in CPEs
The FTTH Access Network OLTs In The Central
Office, ONUs in CPEs
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• The main components of a PON network are an
• Optical Line Terminal/Termination (OLT) unit,
• a passive optical splitter,
• and one or more Optical Network Units (ONUs) or
  Optical Network Termination (ONT) units.
• The OLT is connected to the ONU or ONT via a
  Passive Optical Network (PON) that is made up of
  fibre cables, splitters and other passive
  components

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• OPTICAL SPLITTERS
• These devices split incoming light and distribute
  the light among multiple fibres, or in the
  reverse direction combine multiple light streams
  onto a single fibre.
• Optical splitters are classified as passive
  because there are no active electrical
  components.
• This means that the device is not sensitive to
  temperature or other elements that would be
  problematic for electrical componentry.
• The optical splitter can be seen as a optical
  junction box. One side of the box is the fibre
  that connects to the telco exchange (OLT), and on
  the other side are up to 64 fibres, each of which
  connect to a customer premise

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• ONT/ONU(optical network termination/optical
  network unit)
• Optical Network Termination units (ONTs) provide
  the opto-electrical conversion - allowing
  information to transit from an optical fibre
  framework to an electrical metallic framework.
• ONTs can be thought of as the demarcation point
  where the carrier network ends and the customer
  network begins. From a physical perspective the
  carrier fibre connects to one end of the device,
  and a customer cable on other end
• ONUS terminate the optical stream, and convert
  the signal into electrical format for
  transmission to the customer premise
• ONUs would tend to be located in weather
  reinforced street/pole cabinets, and ONTs would
  be located at customer premises

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• OLT
• OLTs can be located in a number of places, but
  would tend to reside in telco exchanges
• The PON architecture therefore allows a single
  fibre starting at the OLT (telco exchange) to be
  passively split (shared) by up to 64 customers

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DATA SPLITTING IN THE PON NETWORK

• One side of the box is the fibre that connects to
  the telco exchange (OLT), and on the other side
  are up to 64 fibres, each of which connect to a
  customer premise.
• The sharing takes place on the fibre which
  connects to the OLT, whereas the fibres that
  connect to the customer premises have dedicated
  bandwidth.
• The actual bandwidth allocated to each customer
  would depend on two technical factors
• 1) the capacity of the link from the OLT to the
  splitter, and
• 2) the number of customers connected to the
  splitter (eg. up to 64). With a 10 Gbps
  OLT-splitter capacity, and 64 customers, it is
  conceivable that each customer could have up to
  155 Mbps dedicated capacity. Of course, in the
  real world, carrier pricing would also have an
  impact

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• Fibre sharing can be accomplished along
  frequency, time, space and code dimensions
• Most commonly used optically signaling formats
  are techniques are WDM/WDMA (Wavelength Division
  Multiplexing /wavelength division multiplexing
  access) and TDM/TDMA.
• With WDM/WDMA, multiple streams are transmitted
  over distinct wavelengths at the same time.
• With TDM/TDMA, transmissions proceed in a time
  sequenced manner - similar to leased line
  networks.

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Comparison of DSL, Cable and FTTH Technology
Bandwidth
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HOW PON WORKS

• An eg of giga pon architecture my a company is
  analysed
• The Giga PASS approach encompasses three
  technology platforms,
• the PON network interface and processing,
• IP and Ethernet packet processing and an SoC
  architecture that supports a 32-bit RISC
  processor with Linux and VxWorks operating
  systems,
• middleware, and application specific firmware.
• This architecture is capable of supporting both
  GE-PON and GPON data
• Data rates ranging from 1 to 2.5 Gbps at wire
  speed and provides a flexible, programmable and
  upgradeable device architecture well suited for
  future-proofing the access network.

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The GigaPASS Architecture Provides Wire Speed
Access at Gbps Speeds
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• A critical aspect of the GigaPASS architecture is
  that the data path is separate from the
  controlpath processor system.
• The media interface, queuing, packet processing,
  classification,encryption/decryption and other
  data payload processing is done in the wire-speed
  channel.
• passing data through to the Ethernet media
  interface on the customer side and the PON
• network on the central office side.

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• PON networking is a full duplex, point to
• multipoint networking technology that uses
• inexpensive optical splitters to divide a single
  fiber coming from the backbone of the
  enterpriseor metro network into separate strands
  feeding individual subscribers in the access
  network.

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FUTURE OF FTTH

• Carriers cannot easily predict what applications
  will be critical for consumers and business users
  in five years but an important part of the appeal
  of FTTH accessnetworks is that they will provide
  ample bandwidth for 5, 10 and even 20 years or
  more.
• Instead of a limited hardware solution, the
  GigaPASS architecture supports reprogramming of
  functionality so thatcarriers can fine-tune the
  OLT/ONU for specific subscriber services today,
  and can redefine performance parameters to
  support future applications.
• An example of this is support for Dynamic
  Bandwidth Allocation or DBA.
• Programmable DBA is defined in the GPON
  specification and calls for the ability to
  provide different bandwidth priorities to
  subscribers so that different application service
  requirements can be supported.
• For example, it may be critical for
  high-definition IP TV to have priority download
  of a time-sequenced video frame and not so
  critical for a user accessing email. All GPON
  suppliers must have programmable DBA.