1. SEA-ME-WE 4 Prepaired By Md. Faisal Copyright © Md. Faisal 2009
All Right Reserved
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2. Abstract
The South East Asia-Middle East-West Europe 4 (SEA-ME-WE 4) project is the fourth project in the SEA-ME-WE series. On 27th March In this presentation we will focus in basic construction and technological part of SEA-ME-WE-4.
How our communication system benefited by using this route.
How security section are maintaining in SEA-ME-WE-4.
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3. Introduction
South East Asia–Middle East–Western Europe 4 This is an optical fiber communication system that carries telecommunication between South East Asia– Middle East–Western Europe. Cable System provides interfaces for connection in between terminal stations at several locations.
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4. Countries Bangladesh India Sudan Pakistan Egypt Sri-Lanka Italy
Thailand
Malaysia
Singapore
United Arab Emirates
Sudan
Egypt
Italy
Tunisia
Algeria
France
Saudi Arabia
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5. Connecting Point (SG1)Tuas to Mumbai (SG2) Mumbai to Suez
(SG3) Suez to Cairo
(SG4) Cairo to Marseille
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6. INSIDE A SUBMARINE CABLE
Construction
This system was developed by 16 telecommunication companies.
But main construction process was supervised by
Alcatel Submarine Networks & Fujitsu.
Optical fibers
Protective core
Aluminum
tube
Polycarbonate
Insulator
Stranded Steel
The cable is approximately 18,800 KM long and provides the primary Internet backbone between South East Asia, the Indian subcontinent, the Middle East and Europe.
Mylar
Stranded Steel
Polyethylene
INSIDE A SUBMARINE CABLE
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7. Dispersion, Attenuation, Scattering
Procedure . .. …
For increased channel capacity in SEA-ME-WE-4 DWDM (Dense Wavelength Division Multiplexing)
Dispersion, Attenuation, Scattering
Band
Description
WL Range
O band
Original nm
E band
Extended nm
S band
Srt Wvlength nm
C band
Conventional nm
L band
Long WVL nm
U band
Ultra Long WL nm
WDM
Conventional WDM
systems provide up to 16 channels in the 3rd Transmission Window (C band around 1550 nm)of silica optical fibers.
Coarse WDM
two (or possibly more) signals multiplexed onto a single fiber, where one signal was in the 1550 nm band, and the other in the 1310 nm band.
Dense WDM
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8. DWDM Details A DWDM consists Laser light
In DWDM wavelength between C band & L band. This will allow bi-directional communication using single fiber cable. Multiplex different wavelength of laser light
A DWDM consists
Optical Fiber
DWDM Multiplexer
Intermediate line repeater
Laser light
Optical Carrier
Amplifier
Intermediate optical terminal
Two Fiber pairs used where both able to carry 64 carriers at 10Gbit/s
DWDM De-Multiplexer
Channel capacity 1.28 Tbit/s
Optical supervisory channel
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9. Intelligence gathering
Underwater cables, which cannot be kept under constant surveillance, have tempted intelligence-gathering organizations since the late 19th century. Frequently at the beginning of wars nations have cut the cables of the other sides in order to shape the information flows into cables that were being monitored. The most ambitious efforts occurred in World War I, when British and German forces systematically attempted to destroy the others' worldwide communications systems by cutting their cables with surface ships or submarines. During the Cold War the United States Navy and National Security Agency (NSA) succeeded in placing wire taps on Soviet underwater communication lines in Operation Ivy Bells.
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10. Contd…
Operation Ivy Bells A joint USN(United States Navy) + NSA(National Security Agency) mission whose objective was to place wire taps or phone taps on Soviet underwater communication lines during Cold War.
World War I
British and German forces attempted to destroy other
worldwide communication by cutting their cables with
surface ships or submarines .
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11. 2008 Submarine Cable Disruption
23th January 2008
FALCON Cable was cut off.
The FALCON cable system connects several countries in the Persian Gulf and India
Causes
Cable damage
Anchors
Conspiracy
30 January 2008
Internet services were widely disrupted in the Middle East and in the Indian subcontinent due to the damage in SEA-ME-WE-4 and FLAG telecom cable in the Mediterranean sea
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12. Advantages
SEA-ME-WE-4 is used to carry telephone, internet, multimedia, broadband data. SEA-ME-WE 4 has a faster rate of data transmission at 1.28 Tbit/s against SEA-ME-WE 3's 10 Gbit/s SEA-ME-WE 3 provides connectivity to a greater number of countries over a greater distance, but SEA-ME-WE 4 provides far higher data transmission speeds intended to accommodate increasing demand for high-speed internet access in developing countries
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13. Bibliography
Russian telecom newsletter
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14. faisal11vcv at gmail dot com
Thank you All…..
If you have any Query or Question or any thing want to say about this topic then don’t hesitated to contact with me.
faisal11vcv at gmail dot com
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