Options for Increasing Carrier Bandwidth

• Increase the Bit Rate

  • Time-Division Multiplexing (TDM)

• Increase the Number of Wavelengths

  • Wavelength Division Multiplexing (WDM)
    Line and Network Speeds (Gbits/s)
    

2001

2000

1999

1997

1998

1996

Optical (WDM)

TDM

Routers/Switches

0.1

1000

100

10

1

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