SEA-ME-WE 4Prepaired By Md. FaisalCopyright Md. Faisal 2009All Right Reserved

AbstractThe 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 2004. 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.

South East AsiaMiddle EastWestern Europe 4 This is an optical fiber communication system thatcarries telecommunication between South East AsiaMiddle EastWestern Europe. Cable System provides interfaces for connection inbetween terminal stations at several locations.Introduction

BangladeshIndiaPakistanSri-LankaThailandMalaysiaSingaporeUnited Arab Emirates

CountriesSudanEgyptItalyTunisiaAlgeriaFranceSaudi Arabia

Connecting Point(SG1)Tuas to Mumbai(SG2) Mumbai to Suez(SG3) Suez to Cairo(SG4) Cairo to Marseille

ConstructionThe 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.This system was developed by 16 telecommunication companies.But main construction process was supervised by Alcatel Submarine Networks & Fujitsu.PolyethyleneMylarProtective coreOptical fibersINSIDE A SUBMARINE CABLE PolycarbonateInsulatorStranded Steel Stranded Steel Aluminum tube

For increased channelcapacity in SEA-ME-WE-4DWDM (Dense Wavelength Division Multiplexing) Procedure . .. WDMConventional WDMDense WDMCoarse WDMsystems provide up to 16 channels in the 3rd Transmission Window (C band around 1550 nm)of silica optical fibers.Dispersion, Attenuation, Scatteringtwo (or possibly more) signals multiplexed onto a single fiber, where one signal was in the 1550nm band, and the other in the 1310nm band.

BandDescriptionWL RangeO bandOriginal1260-1360 nm E bandExtended1360-1460 nmS bandSrt Wvlength1460-1530 nmC bandConventional1530-1565 nmL bandLong WVL1565-1625 nmU bandUltra Long WL1625-1675 nm

In DWDM wavelength between C band & L band.This will allow bi-directional communication using single fiber cable. Multiplex different wavelength of laser light DWDM DetailsLaser lightOptical CarrierOptical FiberAmplifierTwo Fiber pairs used where both able to carry 64 carriers at 10Gbit/sChannel capacity 1.28 Tbit/sA DWDM consistsDWDM Multiplexer Intermediate line repeater Intermediate optical terminal DWDM De-Multiplexer Optical supervisory channel

Underwater cables, which cannot be kept under constant surveillance,have tempted intelligence-gathering organizations since the late 19thcentury. Frequently at the beginning of wars nations have cut thecables of the other sides in order to shape the information flows intocables that were being monitored. The most ambitious efforts occurredin World War I, when British and German forces systematicallyattempted to destroy the others' worldwide communications systems bycutting their cables with surface ships or submarines. During theCold War the United States Navy and National Security Agency (NSA)succeeded in placing wire taps on Soviet underwater communicationlines in Operation Ivy Bells. Intelligence gathering

Operation Ivy BellsA joint USN(United States Navy) + NSA(National Security Agency) mission whose objective was to place wire taps orphone taps on Soviet underwater communication linesduring Cold War.ContdWorld War IBritish and German forces attempted to destroy otherworldwide communication by cutting their cables withsurface ships or submarines .

2008 Submarine Cable Disruption30 January 2008Internet 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 sea23th January 2008FALCON Cable was cut off.The FALCON cable system connects several countries in the Persian Gulf and India CausesCable damageAnchorsConspiracy

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 1.28Tbit/sagainst SEA-ME-WE 3's 10Gbit/s

SEA-ME-WE 3 provides connectivity to a greater number of countriesover a greater distance, but SEA-ME-WE 4 provides far higher datatransmission speeds intended to accommodate increasing demand forhigh-speed internet access in developing countries Advantages

BibliographyRussian telecom newsletter

www.seamewe4.com

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