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1. DENSE WAVELENGTH DIVISION MULTIPLEXING PRESNTED BY: 1.NAVEEN TIWARI 2.NAVEEN KUSHWAHA 3.MOHIT KUMAR

3. Electromagnetic Spectrum

16. DWDM SYSTEM

17. Comparison of TDM, WDM, and DWDM multiplexing capabilities N/A at publication N/A at publication 16 Yes Yes Yes DWDM 96 5 Gbit/s 2 Yes Yes Yes WDM 48 2.5 Gbit/s 1 No No No TDM Equivalent DS-3 connections Optical system capacity Channels per optical fiber Bit rate independent Protocol independent Scalable Multiplex

19. A picture representing the really cool analogy Before After TDM (cars go faster) After DWDM (all the lanes are used) ATM ATM ATM ATM ATM ATM ATM IP IP IP IP IP IP SONET SONET SONET SONET SONET

22. A picture of How DWDM saves $$ R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R R Before DWDM R R R R R R R R R R After DWDM

24. Signal Degradation Illustrated Optical Amplifier First Noise Floor Noise Floor Optical Signal

26. DWDM Point to Point

27. DWDM Mesh Designs

33. Rayleigh Scattering

35. Absorption

47. Thank You For Your Attention