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DWDM DWDM Presentation Transcript

  • Presented by: - Rajesh Kumar AON - All Optical Network
  • AGENDA 08/18/11 Dense Wave Division Multiplexing
    • Challenges in modern age
    • Resolving capacity crisis
    • DWDM – Architecture
    • Capacity expansion
    • AON
    • Is AON Possible?
    • Future work
    • Concluding comments
    • Additional readings
  • 08/18/11 Dense Wave Division Multiplexing Challenges
    • Bandwidth demand
    • Competition & Reliability
  • Resolving capacity crisis 08/18/11 Dense Wave Division Multiplexing
    • Install new fiber
    • Increase effective bandwidth of existing fiber
    • Increase bit rate
    • Increase number of wavelengths
    • TDM (SONET/SDH)
      • Takes sync and async signals and multiplexes them to a single higher optical bit rate
      • E/O or O/E/O conversion
    • DWDM
      • Takes multiple optical signals and multiplexes onto a single fiber
      • No signal format conversion
    08/18/11 Dense Wave Division Multiplexing DS-1 DS-3 OC-1 OC-3 OC-12 OC-48 OC-12c OC-48c OC-192c Fiber DWDM OADM SONET ADM Fiber TDM and DWDM Comparison
  • DWDM – Architecture 08/18/11 Dense Wave Division Multiplexing
  • 08/18/11 Dense Wave Division Multiplexing How Transmission Happens
  • Capacity expansion potential 08/18/11 Dense Wave Division Multiplexing Comparison Of Traditional & DWDM Transmission Capacity Expansion Evolution: A Strategy for the Long Term
  • 08/18/11 Dense Wave Division Multiplexing Advantages Of DWDM
  • 08/18/11 Dense Wave Division Multiplexing Ability to put multiple services
  • 08/18/11 Dense Wave Division Multiplexing DWDM VS. Optical Networking
  • Steps Towards AON Development
    • DWDM
    • Optical Wavelength Add/Drop Multiplexer
    • Cross Connects
    • Opaque (O/E/O conversion)
    • Transparent (Direct)
    08/18/11 Dense Wave Division Multiplexing
  • Components 08/18/11 Dense Wave Division Multiplexing Cross Connect Optical Add/Drop Multiplexer
  • Is AON Possible?
    • Special Cross connects
    • Various Techniques for Transparent Cross Connects:
    • Microscopic Mirrors
    • Liquid Crystals
    • Bubbles, Fast lasers
    • MEMS
    08/18/11 Dense Wave Division Multiplexing
  • Future of AON 08/18/11 Dense Wave Division Multiplexing
  • Latest Research Work (CISCO) 08/18/11 Dense Wave Division Multiplexing
  • Concluding comments 08/18/11 Dense Wave Division Multiplexing
    • Optical Networking provides the backbone to support existing and emerging technologies while providing near limitless amounts of bandwidth capacity. All optical networking, enabled by optical cross connects and optical programmable add/drop multiplexers, will transparently move trillions of bits of information efficiently and cost effectively.
  • Additional readings 08/18/11 Dense Wave Division Multiplexing
    • http://www.iec.org
    • http://www.ciscosystems.com
    • http://www.notelnetworks.com/ .
    • http://www.zdnet.com
    • http://www.mrv.com
  • Queries ?
  • Contact details:- 08/18/11 Dense Wave Division Multiplexing
    • mailto:er.rajeshkr@gmail.com
    • Phone no.:-
  • 08/18/11 Dense Wave Division Multiplexing THANK YOU
  • 08/18/11 Dense Wave Division Multiplexing
  • 08/18/11 Dense Wave Division Multiplexing
    • Light
      • Ultraviolet (UV)
      • Visible
      • Infrared (IR)
    • Communication wavelengths
      • 850, 1310, 1550 nm
      • Low-loss wavelengths
    • Specialty wavelengths
      • 980, 1480, 1625 nm
    UV IR Visible 850 nm 980 nm 1310 nm 1480 nm 1550 nm 1625 nm  125 GHz/nm Optical Spectrum Wavelength:  (nanometers) Frequency:   (terahertz) C =  x 
  • 08/18/11 Dense Wave Division Multiplexing What is Dense Wave Division Multiplexing (DWDM) ?