2. A POWERPOINT PRESENTATION … ON DENSE WAVELENGTH DIVISION MULTIPLEXING --PRESENTED BY NITESH SRIVASTAVA DEPT- ECE SEM- 6TH ROLL- 32
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4. What is dwdm ?? > Dense wavelength division multiplexing (DWDM) is a technology that uses more than eight multiplexed signals to transmit many wavelengths of light simultaneously over a single optical fiber .
5. HISTORY OF DWDM :: 64 to 160 channels in 1550 nm window Next generation DWDM system Channel spacing of 0.2 to 0.4 nm 16 to 40 channels in 1550nm window DWDM (Dense wdm) Channel spacing of 0.8 to 1.6 2 to 8 channels in 1550nm window Passive (or) 2nd generation WDM Channel spacing of~ 3.2nm 2 channels WWDM (Wideband WDM) 1310nm & 1550nm Late 1990’s Mid 1990’s Early 1990’s 1980’s
6. A dwdm system:: *A basic DWDM system contains several main components: (a) A DWDM terminal multiplexer (b) An intermediate line repeater (c) An intermediate optical terminal (d) A DWDM terminal demultiplexer (e) Optical Supervisory Channel (OSC)
16. DWDM , ideally it should have additional optical switching capability to implement dynamically reconfigurable interconnections necessary for the next generation systems.
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19. IP OVER DWDM :: * The problem: The explosive growth of the Internet spurred by high speed access networks and flat-rate mobile billing plans has caused ferocious competition in the telecom service provider market. * Solutions: One potential answer is IP over DWDM.