Optical Networks – Basic Concepts (Part 1)

Optical Networks Basic Optical Networks Basic Concepts (Part 1)Introduction What is an Optical network? Optical devices and components Basic Concepts in Optical networking Optimization of Optical network design Optimization of Optical network design How to handle faults in Optical Networks ? Some recent research topicsWhat is an Optical network? An ptica etw r connects computers (or any other device which can generate or store data in electronic form) using Optical fibers. ptica fibersare essentially very thin glass cylinders or filaments which carry signals in the form of light ( Optical signals).A transmitter connected to a receiver in an Optical networkOptical to Electrical signalElectrical to Optical SignalFiber (s)TransmitterReceiver4A lit-up bundle of fibersGlobal Optical Fiber Network5 Why do we need Optical Networks ? Demand for bandwidth The tremendous growth of connected users online More and more bandwidth+intensive network applications: More and more bandwidth+intensive network applications: data browsing on the WWW Applications requiring large bandwidth video conferencing download movieAdvantages of Optical Networks High speed capability (theoretically possible to send 50 Terabits per second using a single fiber) Low signal attenuation Low signal distortion Low power requirement Low power requirement Low material usage Small space requirements Low cost Immunity to electrical interferenceOptical Devices/components Optical Fiber consi

Basic concepts in optical networking Optimization of optical network design ... Low cost Immunity to electrical interference. Optical Devices/components Optical Fiber ... Notes: For 1 → 6 there are many routes ( e.g., 1 → 3 → 4 →6, 1 → 2 → 4 → 6)

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