Free space optics

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Free space optics

  1. 1. Free Space Optics Under The Esteemed Guidance of Mr.G.Venugopal Associate ProfessorDepartment Of Computer Science and EngineeringSri Satya Narayana Engineering College, Ongole By R.Mouli sai (07X91A0528)
  2. 2. OVERVIEWINTRODUCTIONHOW FSO WORKSADVANTAGESCHALLENGESSECURITYCONCLUSION
  3. 3. INTRODUCTION………Advanced Communication TechnologyUses Infrared beams for transmissionAlso called Free Space Photonics (FSP)Introduced by Alexander Graham Bell
  4. 4. The transmission of information usinglight is actually not a new idea.In the late nineteenth century, AlexanderBell expanded his "phone-phone"communication which modulated bysunlight.
  5. 5. HOW FSO WORKS………….? Consists of two TelescopesTransmits invisible light beams b/w TelescopesOffer capacities in range of 100Mbps to 2.5GbpsCan function over distances of several Kms
  6. 6. ADVANTAGES……………….Flexible Networking SolutionLow CostUnlimited BandwidthPossible to mount FSO inside even BuildingsOnly requirement is Line of Sight b/w to endsof the link
  7. 7. CHALLENGES…………..Atmosphere FactorsPhysical ObstructionsChange in pointing stabilityScintillationSolar Interfernce
  8. 8. SECURITY………Laser beams can’t detected with spectrumanalyzers or RF metersLine of sight cannot be intercepted easilyBeams are harder to find and crackData can be transmitted over an encryptedconnection
  9. 9. CONCLUSION………….Provides low cost, rapidly deployable methodof gaining access to fiber optic backboneFSO complement legacy network investmentsFSO eliminates the need to obtain costlyspectrum licences
  10. 10. REFERENCES………….http://www.freespaceoptics.orghttp://www.networkmagazin.comHeinz A. Willerbrand, Baksheesh S. Ghuman“Fiber Optics Without Fiber”
  11. 11. ANY QUERIS
  12. 12. T ANK H Q
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