Optical Engineering TuanAnh Chapter 5

LOGO

Chapter 5 OPTICAL NETWORKING

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LOGO5.1 Introduction to Communication networks

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LOGO5.1 Introduction to Communication networks

Networking SpansLAN, MAN, WAN

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LOGONetworking SpansLAN, MAN, WAN

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LOGOTypical Telecommunication networks

Telephone network Version 1.0Human Operator

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LOGO5.2 Wavelength-division multiplexing (WDM)

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LOGO5.2 Wavelength-division multiplexing (WDM)

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LOGO5.2 Wavelength-division multiplexing (WDM)

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LOGO

5.2 Wavelength-division multiplexing (WDM)

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LOGOFiber to the home (FTTH)

ADSL is reaching its limitations(The two major constraints inherent in ADSL technologies, asymmetry and bandwidth limitation)- However, increasingly, cable companies offer both phone and internet services over their copper cables. A new development, as far as fiber optics is concerned, is the emergence of fiber to the home (FTTH) technology, which satisfies all user data requirements with a single strand of fiber while providing very high data rates by taking advantage of the high bandwidth of the optical fibers.

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LOGOFiber to the home (FTTH)

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LOGOFiber to the home (FTTH)

- In an FTTH system, equipment at the head end or CO interfaced into the public switched telephone network or Ethernet interfaces or Video services enter the system from the cable television (CATV) - All of these signals are then combined onto a single fiber using WDM techniques and transmitted to the end user via a passive optical splitter.- At the home, the optical signal is converted into an electrical signal using an optical electrical converter (OEC). The OEC then splits the signal into the services required by the end user

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LOGOSEA ME WE 3 (South East Asia Middle East Western Europe)

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LOGOSEA ME WE 3 (South East Asia Middle East Western Europe)

- Sea-Me-We 3 includes 39 landing points in 33 countries and 4 continents from Western Europe (including Germany, England and France) to the Far East (including China, Japan and Singapore) and to Australia. - Sea-Me-We 3 is the longest system in the world with a total length of 39,000 km. The use of Wavelength Division Multiplexing greatly increases the capacity of the network allowing high quality transmission all the way over distances as far as from Germany to Australia.- Landing point in Vietnam at Danang

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LOGOAsia America Gateway cable system

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LOGOAsia America Gateway cable system

- The Asia America Gateway provides much needed direct access and diverse routing between South East Asia and the USA and will have advantages over the traditional trans-Pacific routes - The cable system spans 20,000km and use the latest Dense Wavelength

Division Multiplexing (DWDM) technologies with a minimum design capacity of 1.28 terabit/s

- On July 15, 2014 the segment at Vung Tau, Vietnam, 18 km off the coast of the city central was damaged and the internet bandwidth to international destinations was disrupted.

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M.Sc. Tuan Anh Bui