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FTTH Basics
1. FIBER TO THE HOME (FTTH)
SEPTEMBER 2013
By Eng. Anuradha Udunuwara,
BSc.Eng(Hons), CEng, MIE(SL), MEF-CECP, MBCS, ITILv3 Foundation, MIEEE, MIEEE-CS, MIEE, MIET, MCS(SL), MSLAAS
4. Services
Information
Ex: Access to Internet
Communication
Ex: Voice, video
Entertainment & media
Ex: Television
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CSP Network
services
subscriber/
customer/
user
Why a network?
Customers don’t buy networks
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Access Network
Edge of the network
Enable delivery of services for specific markets
Enable the connection of telecommunication
services with subscribers
9. Original PSTN
(Public Switched Telephone Network)
Unshielded
Twisted Pair
(local loop)
• Manual switching directly connected two local loops
• Due to microphone technology, audio Bandwidth was 4 kHz
• PSTN is the network
• POTS (Plain Old Telephone Service ) is the service
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Unshielded
Twisted Pair
(local loop)
10. Data support via voice-grade modems
• To send data, it is converted into 4 kHz audio (modem)
• Data rate is determined by Shannon's capacity theorem (there is a maximum data rate (bps)
called the "capacity”, that can be reliably sent through the communications channel. The
capacity depends on the Bandwidth and SNR (Signal to Noise Ratio)
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11. Digital Local Loop Technologies
ISDN (Integrated Services Digital Network )
Voice and Data
Longer distance
DSL (Digital Subscriber Line)
Higher speed
Several variants (ex:- ADSL)
Different encoding technologies -> different data
transmission rates
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12. Next Generation Access Options
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TDM
POTS
V5.2
NGN
ADSL
ADSL2+
VDSL
Next
Generation
Access
FTTx, ETH
WiMAX, LTE
VDSL2
17. Optical Fiber Capacity
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The optical fiber cable in the foreground has the equivalent capacity of the
copper cable in the backgroundSource : http://www.igpolicysummit.org/uncategorized/copper-v-fiber-verizon-makes-a-change-following-sandys-devastation/
20. What is FTTH?
Copper
Fiber
24 kbps - 1.5 MbpsOld networks, optimized for voice
CO
(Central
Office)
19 Mbps - 1 Gbps +Optical networks, optimized for voice,
video and data
CO
//
CO
//
//
Note: network may be aerial or underground
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Source: www.ftthcouncil.org
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21. What is FTTH? , cont.,
The ultimate capacity of a FTTH network exceeds all other transmission media.
OLT: Optical Line Termination
OAN: Optical Access Network
ONT: Optical Network Terminal (single subscriber)
ONU: Optical Network Unit (multiple subscribers)
CO
//
ONT/ONUOLT
Source: www.ftthcouncil.org
OAN/ODN
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22. Architectures
PON (Passive Optical Network)
Shares fiber optic strands for a portion of the networks distribution
Uses optical splitters to separate and aggregate the signal
Power required only at the ends
Active Node
Subscribers have a dedicated fiber optic strand
Many use active (powered) nodes to manage signal distribution
Hybrid PON
Literal combination of an Active Node and a PON architecture
(c) Anuradha Udunuwara
Source: www.ftthcouncil.org
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23. New experience
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Source : 1. http://www.worldneed.us/blog/latest-sharp-lcd-tv-model-to-buy/
2. http://ahugq.vcfpq.servertrust.com/
3. http://www.mobileworldlive.com/time-to-talk-up-hd-voice
1. 2.
HD (High Definition) IPTV
3D (3 Dimension) IPTV, Games
High speed Internet
3.
25. About the Author
Eng. Anuradha Udunuwara is a Chartered Engineer by profession based in Sri Lanka. He has nearly a decade
industry experience in strategy, architecture, engineering, design, plan, implementation and maintenance of CSP
Networks using both packet-switched (PS) and Circuit-Switched (CS) technologies, along with legacy to NGN
migration. Eng. Anuradha is a well-known in the field of CSP industry, both locally and internationally.
Graduated from University of Peradeniya, Sri Lanka in 2001 with an honors in Electrical & Electronic Engineering,
Eng. Anuradha is a corporate member of the Institution of Engineers Sri Lanka, a professional member of British
Computer Society, a member of Institution of Electrical & Electronic Engineers, a member of Institution of
Engineering & Technology (formerly Institution of Electrical Engineers), a member of the Computer Society of Sri
Lanka, a life member of Sri Lanka Association for the Advancement of Science, a senior member of the Carrier
Ethernet Forum, a member of the Internet Society, a member of the Internet Strategy Forum, a member of the
Internet Strategy Forum Network, a member & a senior contributor of the Ethernet Academy, a member of the
NGN/IMS forum and a member of the Peradeniya Engineering Faculty Alumni Association. He is also an ITIL
foundation certified and the only MEF-CECP in the country.
In his spare time Anuradha enjoys spending time with his family, playing badminton, photography, reading and
travelling.
He can be reached at udunuwara@ieee.org
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