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2010fall ch17 bolortsetseg

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J.EL310

J.EL310

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  • J.TC07

2010fall ch17 bolortsetseg 2010fall ch17 bolortsetseg Presentation Transcript

  • Optical Networking
    Т. Баясгалан J.TC07D042
    Б.Болорцэцэг J.TC07D715
  • Optical networking
    Light Source
    Lightguide cables
    Fiber-optic terminal equipment
    Optical networking application issues
  • Optical networking
    Today, every major industrialized center is linked to the rest of the world with fiber-optic cable, and the result is high-quality and low-cost bandwidth. Fiber serves at the building level in commercial and industrial centers, freeing them from the restrictions of copper cable and enabling broadband communications that connects entities with high-speed pipelines.
    View slide
  • Optical networking
    Video conferencing
    Telecommuting
    Internet
    Distance learning
    E-learning
    View slide
  • Light Source
    Light Source
    LED
    Laser
    LEDs are typically used where the distance between the terminals is short; normally 10 km or less, and the bandwidth of the signal is lower than about 150 Mbps. LEDs are generally satisfactory for local networks.
  • LIGHTGUIDE CABLES
    A digital signal is applied to a lightguide by pulsing the light source on and off at the bit rate of the modulating signal and the pulses propagate to the receiver at slightly less than the speed of light. The lightguide has three parts: the inner core, the outer cladding, and a protective coating around the cladding.
  • 1
    2
    Single-mode fiber
    In single-mode fiber, light can take only a single path through a core that measures about 9 microns in diameter.
    Multimode fibers
    Multimode fibers have cores of 50 to 200 microns in diameter.
    Two types of optical fiber are manufactured:
  • FIBER-OPTIC
    TERMINAL
    EQUIPMENT
    APD
    transmitter
    receiver
    FIBER-OPTIC TERMINAL EQUIPMENT
    LED
    laser
    PIN
  • OPTICAL NETWORKING APPLICATION ISSUES
    Lightwave communications systems have applications in both private and public communications systems. The primary LEC and IXC applications ride on SONET/SDH. For noncarrier applications SONET/SDH is also available, as are FDDI, fiber channel, and LAN protocols.
  • The following lists representative fiber applications:
    intercontinental
    and undersea
    transmission systems
    private
    campus
    backbones
    metropolitan
    area backbone
    systems
    trunking
    between local
    central offices
    digital loop
    carrier feeder
    systems
    cable television
    backbone
    transmission
    systems
    interconnection
    of PBXs with
    remote
    switch units
    Fibre Channel
    for high-speed
    computer
    communications
    local area
    networks
  • Thank You !